Publications in space physics

Most recent publications can be found from, and searching for Space Climate/Ionospheric Physics and ordering by date.

Ionospheric physics


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Space climate


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Up to 2015 there was only one space physics group, with the following publications:


  • Amm, O., H. Vanhamäki, K. Kauristie, C. Stolle, F. Christiansen, R. Haagmans, A. Masson, M. G. G. T. Taylor, R. Floberghagen, C. P. Escoubet: A method to derive maps of ionospheric conductances, currents, and convection from the Swarm multisatellite mission, J. Geophys. Res. A, 120, 2015 [10.1002/2014JA020154]
  • Grandin, M., A. T. Aikio, A. Kozlovsky, T. Ulich, T. Raita: Effects of solar wind high-speed streams on the high-latitude ionosphere: Superposed epoch study, J. Geophys. Res. A: Space Physics, 120, 2015 [10.1002/2015JA021785]
  • Juusola, L., A. Viljanen, M. van de Kamp, E. I. Tanskanen, H. Vanhamäki, N. Partamies, K. Kauristie: High-latitude ionospheric equivalent currents during strong space storms: Regional perspective, Space Weather, 13, 2015 [10.1002/2014SW001139]
  • Martini D., K. Mursula, M. Orispää, H.-J. Linthe: Long-term decrease in the response of mid-latitude stations to high-speed solar wind streams in 1914-2000, J. Geophys. Res. A, 120, 2015 [10.1002/2014JA020813]
  • McCrea, I., A. T. Aikio, L. Alfonsi et al.: The Science Case for the EISCAT_3D Radar, Prog. Earth. Planet. Sci., 2, 21, 2015 [10.1186/s40645-015-0051-8]
  • McKay, D., R. Fallows, M. Norden, A. Aikio, J. Vierinen, F. Honary, S. Marple, T. Ulich: All-sky interferometric riometry, Radio Sci., 50, 1050–1061, 2015 [10.1002/2015RS005709]
  • Nygrén, T., A. T. Aikio, M. Voiculescu, L. Cai: Radar observations of simultaneous F region traveling ionospheric disturbances and E region atmospheric gravity waves, J. Geophys. Res. A, 120, 3949–3960, 2015 [10.1002/2014JA020794]
  • Virtanen I.I.: Background Suppression and Strong Phase Codes in Incoherent Scatter Lag Profile Inversion, IEEE Geosci. Remote Sens. Lett., 12, 841-845, 2015 [10.1109/LGRS.2014.2363692]


  • Asikainen T., K. Mursula: Long-term evolution of corrected NOAA/MEPED energetic proton fluxes and their relation to geomagnetic indices, J. Atmos. Sol.-Terr. Phys., 113, 29-­38, 2014 [10.1016/j.jastp.2014.03.005]
  • Bösinger, T., A. G. Demekhov, E. N. Ermakova, C. Haldoupis, Q. Zhou: Pulsating nighttime magnetic background noise in the upper ULF band at low latitudes, J. Geophys. Res. A, 119, 4109–4119, 2014 [10.1002/2014JA019906]
  • Cai L., A. Aikio, T. Nygren: Solar wind effect on Joule heating in the high-latitude ionosphere, J. Geophys. Res. A, 119, 2014 [10.1002/2014JA020269]
  • Holappa L., K. Mursula, T. Asikainen, I. G. Richardson: Annual fractions of high-speed streams from principal component analysis of local geomagnetic activity, J. Geophys. Res. A, 119, 4544-­4555, 2014 [10.1002/2014JA019958]
  • Ieda A., S. Oyama, H. Vanhamäki, R. Fujii, A. Nakamizo, O. Amm, T. Hori, M. Takeda, G. Ueno, A. Yoshikawa, R.J. Redmont, W.F. Denig, Y. Kamide, and N. Nishitani: Approximate forms of daytime ionospheric conductance, J. Geophys. Res. A, 119, 2014 [10.1002/2014JA020665]
  • Juusola L., G. Facsko, I. Honkonen, P. Janhunen, H. Vanhamäki, K. Kauristie, T.V. Laitinen, S.E. Milan, M. Palmroth, E.I. Tanskanen, A. Viljanen: Statistical comparison of seasonal variations in the GUMICS-4 global MHD model ionosphere and measurements, Space Weather, 11, 582–600, 2014 [10.1002/2014SW001082]
  • LAGUNA-LBNO Collaboration: S.K. Agarwalla et al., 230 authors including K. Mursula: The mass-hierarchy and CP-violation discovery reach of the LBNO long-baseline neutrino experiment, J. High Energy Phys., 94, (35 pp), 2014 [10.1007/JHEP05(2014)094]
  • Maliniemi V., T. Asikainen, K. Mursula: Spatial distribution of Northern Hemisphere winter temperatures during different phases of the solar cycle, J. Geophys. Res. D, 119, 2014 [10.1002/2013JD021343]
  • Martini, D., C.-F. Enell, A. Aikio, T. Ulich, Y.-S. Kwak: Report on Science Project for Probing the High-Latitude Ionosphere with Complementary Radar and Energetic Neutral Atom (ENA) Measurements, Int. J. Geosci., 5, 607-610, 2014 [10.4236/ijg.2014.56055]
  • McKay-Bukowski D., J. Vierinen, I.I. Virtanen, R. Fallows, M. Postila, T. Ulich, M. Brentjens, N. Ebbendorf, C.-F. Enell, M. Gerbers, T. Grit, P. Gruppen, A. Kero, T. Iinatti, M. Lehtinen, H. Meulman, M. Norden, M. Orispää, T. Raita, J.-P. de Reijer, L. Roininen, A. Schoenmakers, K. Stuurwold, E. Turunen: KAIRA: the Kilpisjärvi Atmospheric Imaging Receiver Array -- system overview and first results, IEEE Trans. Geosci. Remote Sensing, 53, 1440-1451, 2014 [10.1109/TGRS.2014.2342252]
  • Roininen L., M.S. Lehtinen, P. Piiroinen, I.I. Virtanen: Perfect Radar Pulse Compression via Unimodular Fourier Multipliers, Inverse Probl. Imaging, 8, 831-844, 2014 [10.3934/ipi.2014.8.831]
  • Tlatov A.G., K. A. Tlatova, V. V. Vasilyeva, A. A. Pevtsov, K. Mursula: Properties of sunspot umbrae of leading and trailing polarity in 1917-2013, Adv. Space Res., in press, 2014 [10.1016/j.asr.2014.05.033]
  • Virtanen I. I., D. McKay-Bukowski, J. Vierinen, A. Aikio, R. Fallows, L. Roininen: Plasma parameter estimation from multistatic, multibeam incoherent scatter data, J. Geophys. Res. A, 119, 10,528–10,543, 2014 [10.1002/2014JA020540]
  • Virtanen I. I., K. Mursula : North-south asymmetric solar cycle evolution: signatures in the photosphere and consequences in the corona, Astrophys. J., 781, 99, 2014 [10.1088/0004-637X/781/2/99]


  • Aikio, A. T., Pitkänen, T., Honkonen, I., Palmroth, M., Amm, O.: IMF effect on the polar cap contraction and expansion during a period of substorms, Ann. Geophys., 31, 1021-1034, 2013 [10.5194/angeo-31-1021-2013]
  • Arlt R., R. Leussu, N. Giese, K. Mursula, I. G. Usoskin: Sunspot positions and sizes for 1825–1867 from the observations by Samuel Heinrich Schwabe, Mon. Not. R. Astron. Soc., 433, 3165–3172, 2013 [10.1093/mnras/stt961]
  • Asikainen T., K. Mursula: Correcting NOAA/MEPED energetic electron fluxes for detector efficiency and proton contamination, J. Geophys. Res. A, 118, 6500–6510, 2013 [10.1002/jgra.50584]
  • Cai, L., A. T. Aikio, T. Nygrén: Height-dependent energy exchange rates in the high-latitude E region ionosphere, J. Geophys. Res. A, 118, 7369–7383, 2013 [10.1002/2013JA019195]
  • Cresswell-Moorcock K., C. J. Rodger, A. Kero, A. B. Collier, M. A. Clilverd, I. Häggström, T. Pitkänen: A reexamination of latitudinal limits of substorm-produced energetic electron precipitation, J. Geophys. Res. A, 118, 6694-6705, 2013 [10.1002/jgra.50598]
  • Ermakova E.N, D.S. Kotik, A.V.Ryabov, A.V.Pershin, T. Bösinger, K Zhou: Studying the Variations of the Broadband Spectral Maximum Parameters in the Natural ULF Fields, Radioph. Quant. El., 55, 605-615, 2013 [10.1007/s11141-013-9398-0]
  • Gopalswamy N., H. Xie, S. Akiyama, S. Yashiro, I. G. Usoskin, J. M. Davila: The first ground level enhancement event of solar cycle 24: Direct observations of shock formation and particle release heights, Astrophys. J. Letters, 765, L30, 2013 [10.1088/2041-8205/765/2/L30]
  • Huang X., L. Zhang, H. Wang, L. Li: Improving the performance of solar flare prediction using active longitudes information, Astron. Astrophys., 549, A127, 2013 [10.1051/0004-6361/201219742]
  • Juusola L., M. Kubyshkina, R. Nakamura, T. Pitkänen, O. Amm, K. Kauristie, N. Partamies, H. Rème, K. Snekvik, D. Whiter: Ionospheric signatures of a plasma sheet rebound flow during a substorm onset, J. Geophys. Res. A, 118, 350-363, 2013 [10.1029/2012JA018132]
  • Leussu R., I.G. Usoskin, R. Arlt, K. Mursula: Inconsistency of the Wolf sunspot number series around 1848, Astron. Astrophys., 559, A28 (4 pp), 2013 [10.1051/0004-6361/201322373]
  • Maliniemi V., T. Asikainen, K. Mursula, A. Seppälä: QBO-dependent relation between electron precipitation and wintertime surface temperature, J. Geophys. Res. D, 118, 6302–6310, 2013 [10.1002/jgrd.50518]
  • Markkanen, J., Nygrén, T., Markkanen, M., Voiculescu, M., Aikio, A.: High-precision measurement of satellite range and velocity using the EISCAT radar, Ann. Geophys., 31, 859-870, 2013 [10.5194/angeo-31-859-2013]
  • Mishev A.L., I. G. Usoskin, G. A. Kovaltsov: Neutron monitor yield function: New improved computations, J. Geophys. Res. A, 118, 2783 – 2788, 2013 [10.1002/jgra.50325]
  • Munteanu C., S. Haaland, B. Mailyan, M. Echim, K. Mursula: Propagation delay of solar wind discontinuities: Comparing different methods and the effect of wavelet denoising, J. Geophys. Res. A, 118, 2013 [10.1002/jgra.50429]
  • Mursula K., P. Manoharan, D. Nandi, E. Tanskanen, P. Verronen: Long-term solar activity and its implications to the heliosphere, geomagnetic activity and the Earth’s climate: Preface to the Special Issue on Space Climate, J. Space Weather Space Clim., 3, A21 (6 pp), 2013 [10.1051/swsc/2013043]
  • Nevalainen J., I.G. Usoskin, A. Mishev: Eccentric dipole approximation of the geomagnetic field: Application to cosmic ray computations, Adv. Space Res., 52, 22–29, 2013 [10.1016/j.asr.2013.02.020]
  • Pitkänen T., A.T. Aikio, L. Juusola: Observations of polar cap flow channel and plasma sheet flow bursts during substorm expansion, J. Geophys. Res. A, 118, 774-784, 2013 [10.1002/jgra.50119]
  • Spencer E., S. Patra, T. Asikainen: Magnetotail current contribution to the Dst Index Using the MT Index and the WINDMI model, Adv. Space Res., 52, 1974-1986, 2013 [10.1016/j.asr.2013.08.0162013]
  • Usoskin I.G., B. Kromer, F. Ludlow, J. Beer, M. Friedrich, G. A. Kovaltsov, S. K. Solanki, L. Wacker: The AD775 cosmic event revisited: the Sun is to blame, Astron. Astrophys., 552, L3 (4 pp), 2013 [10.1051/0004-6361/201321080]
  • Virtanen I.I., F.D. Lind, L. Roininen, P.J. Erickson, W.C. Rideout, M. Orispää, J. Vierinen, M.S. Lehtinen: Polyphase-coded incoherent scatter measurements at Millstone Hill, Radio Sci., 48, 519–526 (5 pp), 2013 [10.1002/rds.20058]
  • Zhang L., K. Mursula, I. Usoskin: Consistent long-term variation in the hemispheric asymmetry of solar rotation, Astron. Astrophys., 552, A84 (7 pp), 2013 [10.1051/0004-6361/201220693]


  • Aikio A. T., L. Cai, T. Nygrén : Statistical distribution of height-integrated energy exchange rates in the ionosphere, J. Geophys. Res. A, 117, A10325, 2012 [10.1029/2012JA018078]
  • Asikainen T., K. Mursula, V. Maliniemi: Correction of detector noise and recalibration of NOAA/MEPED energetic proton fluxes, J. Geophys. Res. A, 117, A09204 (16 pp), 2012 [10.1029/2012JA017593]
  • Brändström B.U.E., C.-F. Enell, Widell, T. Hansson, D. Whiter, S. Mäkinen, D. Mikhaylova, K. Axelsson, F. Sigernes, N. Gulbrandsen, N. M. Schlatter, A. G. Gjendem, L. Cai, J. P. Reistad, M. Daae, T. D. Demissie, Y. L. Andalsvik, O. Roberts, S. Poluyanov, S. Chernouss: Results from the intercalibration of optical low light calibration sources 2011, Geosci. Instrum. Method. Data Syst., 1, 43–51, 2012 [10.5194/gi-1-43-2012]
  • Lukianova R., K. Mursula, A. Kozlovsky: Response of the polar magnetic field intensity to the exceptionally high solar wind streams in 2003, Geophys. Res. Lett., 39, L04101 (5 pp), 2012 [10.1029/2011GL050420]
  • Martini D., K. Mursula, T. Ulich, V.S. Pandeya, K.-H. Kima, D.-H. Lee: Long-term changes in indices of geomagnetic activity at the auroral station Sodankylä, Adv. Space Res., 50, 690–699, 2012 [10.1016/j.asr.2012.01.013]
  • Mironova I.A., I.G. Usoskin, G.A. Kovaltsov, S.V. Petelina: Possible effect of extreme solar energetic particle event of 20 January 2005 on polar stratospheric aerosols: direct observational evidence, Atmos. Phys. Chem., 12, 769–778, 2012 [10.5194/acp-12-769-2012]
  • Mursula K., I.I Virtanen: The wide skirt of the bashful ballerina: Hemispheric asymmetry of the heliospheric magnetic field in the inner and outer heliosphere, J. Geophys. Res. A, 117, A08104, 2012 [10.1029/2011JA017197]
  • Nygrén T., A. T. Aikio, M. Voiculescu, R. Kuula: Statistical evaluation of electric field and neutral wind results from beam-swing incoherent scatter measurements, J. Geophys. Res. A, 117, A04319 (9 pp), 2012 [10.1029/2011JA017307]
  • Nygrén T., J. Markkanen, A. Aikio, M. Voiculescu: High-precision measurement of satellite velocity using the EISCAT radar, Ann. Geophys., 30, 1555-1565, 2012 [10.5194/angeo-30-1555-2012]
  • Shalimov S.L., T. Bösinger: Sprite-Producing Lightning-Ionosphere Coupling and Associated Low-Frequency Phenomena, Space Sci. Rev., 168, 517-531, 2012 [10.1007/s11214-011-9812-x]
  • Usoskin I.G.: (Editorial:) Solar Variability, Cosmic Rays and Climate: What′s up?, Adv. Space Res., 50, 655, 2012 [10.1016/j.asr.2012.06.030]
  • Yakovchouk O. S., K. Mursula, L. Holappa, I. S. Veselovsky, A. Karinen: Average properties of geomagnetic storms in 1932-2009, J. Geophys. Res. A, 117, A03201 (13 pp), 2012 [10.1029/2011JA017093]


  • Amm O., R. Fujii, K. Kauristie, A. Aikio, A. Yoshikawa, A. Ieda, H. Vanhamäki: A statistical investigation of the Cowling channel efficiency in the auroral zone, J. Geophys. Res. A, 116, A02304, 2011 [10.1029/2010JA015988]
  • Amm O., R. Nakamura, T. Takada, K. Kauristie, H. U. Frey, C. J. Owen, A. Aikio, R. Kuula: Observations of an auroral streamer in a double oval configuration, Ann. Geophys., 29, 701-716, 2011 [10.5194/angeo-29-701-2011]
  • Asikainen T., K. Mursula: Recalibration of NOAA/MEPED energetic proton measurements, J. Atmos. Sol.-Terr. Phys., 73, 335-347, 2011 [10.1016/j.jastp.2009.12.011]
  • Honkonen I., M. Palmroth, T. I. Pulkkinen, P. Janhunen, A. Aikio: On large plasmoid formation in a global magnetohydrodynamic simulation, Ann. Geophys., 29, 167–179, 2011 [10.5194/angeo-29-167-2011]
  • Love J.J., K. Mursula, V. C. Tsai, D. M. Perkins: Are secular correlations between sunspots, geomagnetic activity, and global temperature signicant?, Geophys. Res. Lett., 38, L21703, 2011 [10.1029/2011GL049380]
  • Lukianova R., K. Mursula: Changed relation between sunspot numbers, solar UV/EUV radiation and TSI during the declining phase of solar cycle 23, J. Atmos. Sol.-Terr. Phys., 73, 235-240, 2011 [10.1016/j.jastp.2010.04.002]
  • Martini D., M. Orispää, T. Ulich, M. Lehtinen, K. Mursula, D.‐H. Lee: Kalman filter technique for defining solar regular geomagnetic variations: Comparison of analog and digital methods at Sodankylä Observatory, J. Geophys. Res. A, 116, A06102 (7pp), 2011 [10.1029/2010JA016343]
  • Mursula K., D. Marsh, D. Nandy, I Usoskin: (Editorial:) A review of Space Climate and an introduction to the papers of the JASTP special issue on Space Climate, J. Atmos. Sol.-Terr. Phys., 73, 179-181, 2011 [10.1016/j.jastp.2010.11.002]
  • Mursula K., E. Tanskanen, J. J. Love: Spring-Fall asymmetry of substorm strength, geomagnetic activity and solar wind: Implications for semiannual variation and solar hemispheric asymmetry, Geophys. Res. Lett., 38, L06104 (5 pp), 2011 [10.1029/2011GL046751]
  • Mursula K., I. I. Virtanen: The last dance of the bashful ballerina?, Astron. Astrophys., 525, L12 (5 pp), 2011 [10.1051/0004-6361/200913975]
  • Mursula K., L. Holappa, A. Karinen: Uneven weighting of stations in the Dst index, J. Atmos. Sol.-Terr. Phys., 73, 316-322, 2011 [10.1016/j.jastp.2010.04.007]
  • Nygren T., A.T. Aikio, R. Kuula, M. Voiculescu: Electric fields and neutral winds from monostatic incoherent scatter measurements by means of stochastic inversion, J. Geophys. Res. A, 116, A05305 (13 pp), 2011 [10.1029/2010JA016347]
  • Pitkänen T., A. T. Aikio, O. Amm, K. Kauristie, H. Nilsson, K. U. Kaila: EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere, Ann. Geophys., 29, 299-319, 2011 [10.5194/angeo-29-299-2011]
  • Shalimov S.L., T. Bösinger: Sprite-producing lightning-ionosphere coupling and associated low-frequency phenomena, Space Sci. Rev., in press, 2011 [10.1007/s11214-011-9812-x]
  • Tanskanen E.I., T.I. Pulkkinen, A. Viljanen, K. Mursula, N. Partamies, J.A. Slavin: From space weather towards space climate time scales: substorm analysis from 1993 to 2008, J. Geophys. Res. A, 116, A00I34 (12 pp), 2011 [10.1029/2010JA015788]
  • Zhang L., K. Mursula, I. Usoskin, H. Wang: Global analysis of active longitudes of sunspots, Astron. Astrophys., 529, A23 (9 pp), 2011 [10.1051/0004-6361/201015255]
  • Zhang L., K. Mursula, I. Usoskin, H. Wang: Global analysis of active longitudes of solar X-ray flares, J. Atmos. Sol.-Terr. Phys., 73, 258-263, 2011 [10.1016/j.jastp.2009.12.003]


  • Asikainen T., V. Maliniemi, K. Mursula: Modeling the contributions of ring, tail and magnetopause currents to the corrected Dst index, J. Geophys. Res. A, 115, A12203 (16 pp), 2010 [10.1029/2010JA015774]
  • Dahlgren H., A. Aikio, K. Kaila, N. Ivchenko, B.S. Lanchester, D.K. Whiter, G.T. Marklund: Simultaneous observations of small multi-scale structures in an auroral arc, J. Atmos. Sol.-Terr. Phys., 72, 633-637, 2010 [10.1016/j.jastp.2010.01.014]
  • Hubert B., A.T. Aikio, O. Amm, T. Pitkänen, K. Kauristie, S.E. Milan, S.W.H. Cowley, J.-C. Gérard: Comparison of the open-closed field line boundary location inferred using IMAGE-FUV SI12 images and EISCAT radar observations, Ann. Geophys., 28, 883-892, 2010 [10.5194/angeo-28-883-2010] >>
  • Leppänen A.-P., A.A. Pacini, I.G. Usoskin, A. Aldahan, E. Echer, H. Evangelista, S. Klemola, G.A. Kovaltsov, K. Mursula, G. Possnert: Cosmogenic 7Be in air: A complex mixture of production and transport, J. Atmos. Sol.-Terr. Phys., 72 , 1036-1043, 2010 [10.1016/j.jastp.2010.06.006]
  • Nygrén T., Th. Ulich: Calculation of signal spectrum by means of stochastic inversion, Ann. Geophys., 28, 1409-1418, 2010 [10.5194/angeo-28-1409-2010]
  • Virtanen I.I., K. Mursula: Asymmetry of solar polar fields and the southward shift of HCS observed by Ulysses, J. Geophys. Res. A, 115, A09110 (10 pp), 2010 [10.1029/2010JA015275]
  • Voiculescu M., E. Danila, T. Nygrén, T. Raita: Plasma density troughs in the F-region and top ionosphere, Ann. Dunarea de Jos U., II, 273–279, 2010
  • Voiculescu M., T. Nygrén, A. T. Aikio, R. Kuula: An olden but golden EISCAT observation of a quiet-time ionospheric trough, J. Geophys. Res. A, 115, A10315 (13 pp), 2010 [10.1029/2010JA015557]


  • Aikio A.T., A. Selkälä: Statistical properties of Joule heating rate, electric field and conductances at high latitudes, Ann. Geophys., 27, 2661–2673, 2009 >>
  • Bösinger T., E.N. Ermakova, C. Haldoupis, D.S. Kotik: Magnetic-inclination effects in the spectral resonance structure of the ionospheric Alfvén resonator, Ann. Geophys., 27, 1313-1320, 2009 >>
  • Jordanova V.K., H. Matsui, P.A. Puhl-Quinn, M.F. Thomsen, K. Mursula, L. Holappa: Ring current development during high speed streams , J. Atmos. Sol.-Terr. Phys., 71, 1093-1102 , 2009 [10.1016/j.jastp.2008.09.043]
  • Lukianova, R., G. Alekseev, K. Mursula: Effects of station relocation in the aa index, J. Geophys. Res. A, 114, A02105:1-, 2009 [10.1029/2008JA013824]
  • Martini D., K. Mursula, S. Alex: The new digital Ah index of geomagnetic activity at Alibag and other stations, Curr. Sci. India, 96, 280-283, 2009 >>
  • Mursula K., I.G. Usoskin, O. Yakovchuk: Does sunspot number calibration by the ´magnetic needle´ make sense?, J. Atmos. Sol.-Terr. Phys., 17, 1717-1726, 2009 [10.1016/j.jastp.2008.04.017]
  • Pitkänen T., A.T. Aikio, A. Kozlovsky, O. Amm: Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm, Ann. Geophys., 27, 2157-2171, 2009 >>
  • Usoskin I.G., E. Valtonen, R. Vainio, P.J. Tanskanen, A.M. Aurela: History of cosmic ray research in Finland, Adv. Space Res., 44, 1232-1236, 2009 [10.1016/j.asr.2008.10.042]
  • Usoskin I.G., K. Mursula, R. Arlt, G.A. Kovaltsov: A solar cycle lost in 1793-1800: Early sunspot observations resolve the old mystery, Astrophys. J. Letters, 700, L154–L157, 2009 [10.1088/0004-637X/700/2/L154]
  • Veselovsky I.S., K. Mursula, N. G. Ptitsyna, M. I. Tyasto, O. S. Yakovchouk: Sporadic and recurrent geomagnetic disturbances in 1859-1860 according to the archived data from the Russian network of stations, Geomagn. Aeron., 49, No. 2, 163-168, 2009 [10.1134/S0016793209020042]
  • Virtanen I.I, J. Vierinen, M.S. Lehtinen: Phase-coded pulse aperiodic transmitter coding, Ann. Geophys., 27, 2799-2811, 2009 >>
  • Yahnin A.G., T.A. Yahnina, H.U. Frey, T. Bösinger, J. Manninen: Proton Aurora Related to Intervals of Pulsations of Diminishing Periods, J. Geophys. Res. A, 114, A12215, 2009 [10.1029/2009JA014670]
  • Yakovchouk O.S., I.S. Veselovsky, K. Mursula: Statistical properties of the most powerful solar and heliospheric disturbances, Adv. Space Res., 43, 634-640, 2009 [10.1016/j.asr.2008.09.025]


  • Aikio, A., T. Pitkänen, D. Fontaine, I. Dandouras, O. Amm, A. Kozlovsky, A. Vaivdas, and A. Fazakerley: EISCAT and Cluster observations in the vicinity of the dynamical polar cap boundary, Ann. Geophys., 26(1), 87-105, 2008 >>
  • Asikainen, T. and K. Mursula: Energetic electron flux behavior at low L-shells and its relation to the South Atlantic Anomaly, J. Atmos. Sol.-Terr. Phys., 70, 532-538, 2008 [10.1016/j.jastp.2007.08.061]
  • Bösinger, T. and S.L. Shalimov: On ULF signatures of lightning discharges, Space Sci. Rev., 137, 521–532, 2008 [10.1007/s11214-008-9333-4]
  • Grigoryev, A.V., S.A. Starodubtsev, V.G. Grigoryev, I.G. Usoskin and K. Mursula: Fluctuations of cosmic rays and IMF in the vicinity of interplanetary shocks, Adv. Space Res., 41, 955-961, 2008 [10.1016/j.asr.2007.04.044]
  • Kero, A., C.-F. Enell, A.J. Kavanagh, J. Vierinen, I. Virtanen and E. Turunen: Could negative ion production explain the polar mesosphere winter echo (PMWE) modulation in active HF heating experiments?, Geophys. Res. Lett., 35, L23102:1-4, 2008 [10.1029/2008GL035798]
  • Kero, A., J. Vierinen, C.-F. Enell, I. Virtanen, and E. Turunen: New incoherent scatter diagnostic methods for the heated D-region ionosphere, Ann. Geophys., 26(8), 2273-2279, 2008 >>
  • Lehtinen, M.S., I.I. Virtanen and J. Vierinen: Fast comparison of IS radar code sequences for lag profile inversion, Ann. Geophys., 26(8), 2291-2301, 2008 >>
  • Martini, D. and K. Mursula: Centennial geomagnetic activity studied by a new, reliable long-term index, J. Atmos. Sol.-Terr. Phys., 70, 1074-1087, 2008 [10.1016/j.jastp.2008.01.008]
  • Mursula, K., L. Holappa, and A. Karinen: Correct normalization of the Dst index, Astrophys. Space Sci. Trans., 4, 41-45, 2008 >>
  • Neubert, T., M. Rycroft, T. Farges, E. Blanc, O. Chanrion, E. Arnone, A. Odzimek, N. Arnold, C.-F. Enell, E. Turunen, T. Bösinger, Á. Mika, C. Haldoupis et al.: Recent results from studies of electric discharges in the mesosphere, Surv Geophys, 29, 71-137, 2008 [10.1007/s10712-008-9043-1]
  • Nygrén, T., M. Voiculescu, and A.T. Aikio: The role of electric field and neutral wind in the generation of polar cap sporadic E, Ann. Geophys., 26(12), 3757-3763, 2008 >>
  • Shalimov, S. and T. Bösinger: On distant excitation of the ionospheric Alfvén resonator by positive cloud-to-ground lightning discharges, J. Geophys. Res. A, 113 , A02303:1-7, 2008 [10.1029/2007JA012614]
  • Vierinen, J., M.S. Lehtinen, and I.I. Virtanen: Amplitude domain analysis of strong range and Doppler spread radar echos, Ann. Geophys., 26(8), 2419-2426, 2008 >>
  • Vierinen, J., M.S. Lehtinen, M. Orispää, and I.I. Virtanen: Transmission code optimization method for incoherent scatter radar, Ann. Geophys., 26(9), 2923–2927, 2008 >>
  • Virtanen, I. I., M. S. Lehtinen, and J. Vierinen: Towards multi-purpose IS radar experiments, Ann. Geophys., 26(8), 2281-2289, 2008 >>
  • Virtanen, I.I., M.S. Lehtinen, T. Nygrén, M. Orispää, and J. Vierinen: Lag profile inversion method for EISCAT data analysis, Ann. Geophys., 26(3), 571–581, 2008 >>
  • Voiculescu, M. and T. Nygrén: Extraterrestrial magnetic field effect on the F region trough, Romanian Journal of Physics, 53(1-2), 15-22, 2008 >>
  • Voiculescu, M. and T. Nygrén: Radar observations of plama depletions in the ionosphere, Romanian Journal of Physics, 53(1-2), 7-13, 2008 >>
  • Yahnina, T.A., H.U. Frey, T. Bösinger, and A.G. Yahnin: Evidence for subauroral proton flashes on the dayside as the result of the ion-cyclotron interaction, J. Geophys. Res. A, 113, A07209, 2008 [10.1029/2008JA013099]


  • Alanko-Huotari, K., I.G. Usoskin, K. Mursula, and G.A. Kovaltsov: Stochastic simulation of cosmic ray modulation including a wavy heliospheric current sheet, J. Geophys. Res. A, 112, A08101-1:10, 2007 [10.1029/2007JA012280] Erratum
  • Alanko-Huotari, K., I.G. Usoskin, K. Mursula, and G.A. Kovaltsov: Cyclic variations of the heliospheric tilt angle and cosmic ray modulation, Adv. Space Res., 40, 1064-1069, 2007 [10.1016/j.asr.2007.02.007]
  • Ashrafi, M., M.J. Kosch, K. Kaila, and B. Isham: Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic, J. Geophys. Res. A, 112, A05314, 2007 [10.1029/2006JA011938]
  • Fear, R.C., S.E. Milan, A.N. Fazakerley, C.J. Owen, T. Asikainen, M.G.G.T. Taylor, E.A. Lucek, H. Réme, I. Dandouras and P.W. Daly: Motion of flux transfer events: a test of the Cooling model, Ann. Geophys., 25, 1669-1690, 2007 >
  • Feygin, F.Z., A.K. Nekrasov, T. Pikkarainen, T. Raita and K. Prikner: Pc1 pearl waves with magnetosonic dispersion, J. Atmos. Sol.-Terr. Phys., 69(14), 1644-1650, 2007 [10.1016/j.jastp.2007.01.019]
  • Guglielmi, A. and J. Kangas: Pc1 waves in the system of solar–terrestrial relations: New reflections, J. Atmos. Sol.-Terr. Phys., 69(14), 1635-1643, 2007 [10.1016/j.jastp.2007.01.015]
  • Hiltula, T. and K. Mursula: HMF sectors since 1926: Comparison of two ground-based data sets, Adv. Space Res., 40, 1054-1059, 2007 [10.1016/j.asr.2007.01.068]
  • Kozlovsky, A., A. Aikio, T. Turunen, H. Nilsson, T. Sergienko, V. Safargaleev, and K. Kauristie: Dynamics and electric currents of morningside Sun-aligned auroral arcs, J. Geophys. Res. A, 112, A06306, 2007 [10.1029/2006JA012244]
  • Mursula, K. : Satellite observations of Pc 1 pearl waves: The changing paradigm, J. Atmos. Sol.-Terr. Phys., 69(14), 1623-1634, 2007 [10.1016/j.jastp.2007.02.013]
  • Mursula, K. : Bashful ballerina: The asymmetric Sun viewed from the heliosphere, Adv. Space Res., 40, 1034-1041, 2007 [10.1016/j.asr.2007.05.087]
  • Mursula, K. and D. Martini: A new verifiable measure of centennial geomagnetic activity: Modifying the K index method for hourly data, Geophys. Res. Lett., 34, L22107, 2007 [10.1029/2007GL031123]
  • Mursula, K. and D. Martini: New indices of geomagnetic activity at test: Comparing the correlation of the analogue ak index with the digital Ah and IHV indices at the Sodankylä station, Adv. Space Res., 40, 1105-1111, 2007 [10.1016/j.asr.2007.06.067]
  • Mursula, K., I.G. Usoskin, and G. Maris: Introduction to space climate, Adv. Space Res., 40, 885-887, 2007 [10.1016/j.asr.2007.07.046]
  • Prikner, K., K. Mursula, T. Bösinger, F. Z. Feygin, and T. Raita: The effective altitude range of the ionospheric Alfven resonator studied by high-altitude EISCAT measurements, J. Atmos. Sol.-Terr. Phys., 69, 1657-1667, 2007 [10.1016/j.jastp.2006.11.005]
  • Starodubtsev, S.A., A.V. Grigorev, V.G. Grigorev, I.G. Usoskin, and K. Mursula: Fluctuations of cosmic rays and interplanetary magnetic field in the vicinity of interplanetary shock fronts, Bull Russ Acad Sci: Physics, 71, No. 7, 991-993, 2007 [10.3103/S1062873807070295]
  • Voiculescu, M., and Nygrén, T: IMF effect on ionospheric trough occurrence at equinoxes, Adv. Space Res., 40, 1935-1940, 2007 [10.1016/j.asr.2007.04.108 ]
  • Voiculescu, M., I. Usoskin, and K. Mursula: Effect of ENSO and volcanic events on the Sun–cloud link, Adv. Space Res., 40, 1140-1145, 2007 [10.1016/j.asr.2007.01.089]


  • Aikio, A.T., T. Pitkänen, A. Kozlovsky, and O. Amm: Method to locate the polar cap boundary in the nightside ionosphere and application to a substorm event , Ann. Geophys., 24, No. 7, 1905-1917, 2006 >>
  • Alanko-Huotari, K., K. Mursula, I.G. Usoskin, and G.A. Kovaltsov: Global heliospheric parameters and cosmic-ray modulation: an empirical relation for the last decades, Solar Phys., 238, 391-404, 2006 [10.1007/s11207-006-0233-z]
  • Asikainen, T. and K. Mursula: Reconnection and energetic particles at the edge of the exterior cusp, Ann. Geophys., 24, No. 7, 1949-1956, 2006 >>
  • Blagoveshchenskaya, N.F., V.A. Kornienko, T.D. Borisova, M.T. Rietveld, T. Bösinger, B. Thidé, T.B. Leyser and A. Brekke: Heater-induced phenomena in a coupled ionosphere-magnetosphere system, Adv. Space Res., 38, No. 11, 2495-2502, 2006 [10.1016/j.asr.2004.12.047]
  • Blomberg, L.G., H. Matsumoto, J.-L. Bougeret, H. Kojima, S. Yagitani, J.A. Cumnock, A.I. Eriksson, G.T. Marklund, J.-E. Wahlund, L. Bylander, L. Åhlen, J.A. Holtet, K. Ishisaka, E. Kallio, Y. Kasaba, A. Matsuoka, M. Moncuquet, K. Mursula, Y. Omura, and J.G. Trotignon: MEFISTO - An electric field instrument for BepiColombo/MMO, Adv. Space Res., 38, No. 4, 672-679, 2006 [10.1016/j.asr.2005.05.032]
  • Bösinger, T., A. Mika, S.L. Shalimov, C. Haldoupis, and T. Neubert: Is there a unique signature in the ULF response to sprite-associated lightning flashes?, J. Geophys. Res. A, 111, A10310, 2006 [10.1029/2006JA011887]
  • Damtie, B., T. Bösinger, and I. Usoskin: Establishing a cosmic ray station and other space research facilities in Ethiopia, African Skies , No. 10, October, 29-32, 2006
  • Ermakova, E.N., D.S. Kotik, S.V. Polyakov, T. Bösinger, and L.A. Sobchakov: A power line as a tunable ULF-wave radiator: Properties of artificial signal at distances of 200 to 1000 km, J. Geophys. Res. A, 111, A04305-1--11, 2006 [10.1029/2005JA011420]
  • Haldoupis, C., R.J. Steiner, A. Mika, S. Shalimov, R.A. Marshall, U.S. Inan, T. Bösinger, and T. Neubert : Early/slow events: a new category of VLF perturbations observed in relation with sprites, J. Geophys. Res. A, 111, A11321 1-9, 2006 [10.1029/2006JA011960]
  • Hartle, R.E., E.C. Sittler, F.M. Neubauer, R.E. Johnson, H.T. Smith, F. Crary, D.J. McComas, D.T. Young, A.J. Coates, D. Simpson, S. Bolton, D. Reisenfeld, K. Szego, J.J. Berthelier, A. Rymer, J. Vilppola, J.T. Steinberg and N. Andre: Initial interpretation of Titan plasma interaction as observed by the Cassini plasma spectrometer: Comparisons with Voyager 1, Planet. Space Sci., 54, 1211-1224, 2006 [doi:10.1016/j.pss.2006.05.029]
  • Hartle, R.E., E.C. Sittler Jr., F.M. Neubauer, R.E. Johnson, H.T. Smith, F. Crary, D.J. McComas, D.T. Young, A.J. Coates, D. Simpson, S. Bolton, D. Reisenfeld, K. Szego, J.J. Berthelier, A. Rymer, J. Vilppola, J.T. Steinberg, and N. Andre: Preliminary interpretation of Titan plasma interaction as observed by the Cassini Plasma Spectrometer: Comparisons with Voyager 1, Geophys. Res. Lett., 33, No. 8, L08201-1--5, 2006 [10.1029/2005GL024817]
  • Hiltula, T. and K. Mursula: Long dance of the bashful ballerina, Geophys. Res. Lett., 33, No. 3, L03105-1--4, 2006 [10.1029/2005GL025198]
  • Holma, H., K.U. Kaila, M.J. Kosch, and M.T. Rietveld: Recognizing the blue emission in artificial aurora , Adv. Space Res., 38, No. 11, 2653-2658, 2006 [10.1016/j.asr.2005.07.036]
  • Huttunen, K.E.J., H.E.J. Koskinen, A. Karinen, and K. Mursula : Asymmetric development of magnetospheric storms during magnetic clouds and sheath regions, Geophys. Res. Lett., 33, No. 6, L06107, 2006 [10.1029/2005GL024894]
  • Karinen, A. and K. Mursula: Correcting the Dst index: Consequences for absolute level and correlations , J. Geophys. Res. A, 111, A08207, 2006 [10.1029/2005JA011299]
  • Kozelova, T.V., L. L. Lazutin, B.V. Kozelov, N. Meredith, and M.A. Danielides: Alternating bursts of low energy ions and electrons near the substorm onset, Ann. Geophys., 24, No. 7, 1957-1968, 2006 >>
  • Martini, D. and K. Mursula : Correcting the geomagnetic IHV index of the Eskdalemuir observatory, Ann. Geophys., 24, No. 12, 3411-3419, 2006 >>
  • Mursula, K. and D. Martini: Centennial increase in geomagnetic activity: Latitudinal differences and global estimates, J. Geophys. Res. A, 111, A08209, 2006 [10.1029/2005JA011549]
  • Nygrén, T., A. T. Aikio, M. Voiculescu, and J. M. Ruohoniemi: IMF effect on sporadic-E layers at two northern polar cap sites: Part II - Electric field, Ann. Geophys., 24, No. 3, 901-913, 2006 >>
  • Shalimov, S.L. and T. Bösinger : An alternative explanation for the ultra-slow tail of sprite-associated lightning discharges, J. Atmos. Sol.-Terr. Phys., 68, 814-820, 2006 [10.1016/j.jastp.2005.12.001]
  • Sillanpää, I., E. Kallio, P. Janhunen, W. Schmidt, K. Mursula, J. Vilppola, and P. Tanskanen: Hybrid simulation study of ion escape at Titan for different orbital positions, Adv. Space Res., 38(4), 799-805, 2006 [10.1016/j.asr.2006.01.005 ]
  • Starodubtsev, S.A., I.G. Usoskin, A.V. Grigoryev, and K. Mursula: Long-term modulation of the cosmic ray fluctuation spectrum, Ann. Geophys., 24 (2), 779-783, 2006 >>
  • Usoskin, I.G., M. Voiculescu, G. A. Kovaltsov, and K. Mursula: Correlation between clouds at different altitudes and solar activity: Fact or artifact?, J. Atmos. Sol.-Terr. Phys., 68, 2164-2172, 2006 [10.1016/j.jastp.2006.08.005]
  • Voiculescu, M., A.T. Aikio, T. Nygrén, and J.M. Ruohoniemi: IMF effect on sporadic-E layers at two northern polar cap sites: Part I - Statistical study, Ann. Geophys., 24, No. 3, 887-900, 2006 >>
  • Voiculescu, M., I.G. Usoskin, and K. Mursula: Different response of clouds to solar input, Geophys. Res. Lett., 33, L21802 1-5, 2006 [10.1029/2006GL027820]
  • Voiculescu, M., I. Virtanen, and T. Nygrén: The F-region trough: seasonal morphology and relation to interplanetary magnetic field, Ann. Geophys., 24, No. 1, 173-185, 2006 >>


  • Amm, O., E.F. Donovan, H. Frey, M. Lester, R. Nakamura, J.A. Wild, A. Aikio, M. Dunlop, K. Kauristie, A. Marchaudon, I.W. McCrea, H.J. Opgenoorth, and A. Strømme: Coordinated studies of the geospace environment using Cluster, satellite and ground-based data: an interim review, Ann. Geophys., 23, No. 6, 2129-2170, 2005 >>
  • Aruliah, A.L., E.M. Griffin, A.D. Aylward, E.A.K. Ford, M.J. Kosch, C.J. Davis, V.S.C. Howells, S.E. Pryse, H.R. Middleton, and J. Jussila: First direct evidence of meso-scale variability on ion-neutral dynamics using co-located tristatic FPIs and EISCAT radar in Northern Scandinavia, Ann. Geophys., 23, No. 1, 147-162, 2005 >>
  • Asikainen, T. and K. Mursula: Energetic particle fluxes in the exterior cusp and the high-latitude dayside magnetosphere: statistical results from the Cluster/RAPID instrument, Ann. Geophys., 23, No. 6, 2217-2230, 2005 >>
  • Asikainen, T. and K. Mursula: Filling the South Atlantic anomaly by energetic electrons during a great magnetic storm, Geophys. Res. Lett., 32, L16102, 2005 [10.1029/2005GL023634]
  • Blagoveshchenskaya, N.F., T.D. Borisova, V.A. Kornienko, B. Thide, M.T. Rietveld, M.J. Kosch, and T. Bösinger: Phenomena in the ionosphere-magnetosphere system induced by injection of powerful HF radio waves into nightside auroral ionosphere, Ann. Geophys., 23, No. 1, 87-100, 2005 >>
  • Gustavsson, B., T. Sergienko, M.J. Kosch, M.T. Rietveld, B.U.E. Brändström, T.B. Leyser, B. Isham, P. Gallop, T. Aso, M. Ejiri, T. Grydeland, A. Steen, C. LaHoz, K. Kaila, J. Jussila, and H. Holma: The electron energy distribution during HF pumping, a picture painted with all colors, Ann. Geophys., 23, No. 5, 1747-1754, 2005 >>
  • Hebden, S.R., T.R. Robinson, D.M. Wright, T. Yeoman, T. Raita, and T. Bösinger: A quantitative analysis of the diurnal evolution of ionospheric Alfvén resonator magnetic resonance features and calculation of changing IAR parameters, Ann. Geophys., 23, No. 5, 1711-1721, 2005 >>
  • Karinen, A. and K. Mursula: A new reconstruction of the Dst index for 1932-2002, Ann. Geophys., 23, No. 2, 475-485, 2005 >>
  • Kerttula, R., K. Mursula, T. Asikainen, R. Friedel, D. Baker, F. Søraas, J.F. Fennell, J.B. Blake, and M. Grande: Energetic particle acceleration during a major magnetic storm, Adv. Space Res., 36, No. 10, 1835-1839, 2005 [10.1016/j.asr.2004.03.023]
  • Kozlovsky, A., H. Nilsson, T. Sergienko, A.T. Aikio, V. Safargaleev, T. Turunen, and K. Kauristie: On the field-aligned currents in the vicinity of prenoon auroral arcs, Geophys. Res. Lett., 32, L18104, 2005 [10.1029/2005GL023120]
  • Kozlovsky, A., V. Safargaleev, N. Oestgaard, T. Turunen, A. Koustov, J. Jussila, and A. Roldygin: On the motion of dayside auroras caused by a solar wind pressure pulse, Ann. Geophys., 23, No. 2, 509-521, 2005 >>
  • Mursula, K. and A. Karinen: Explaining and correcting the excessive semiannual variation in the Dst index, Appl. Phys. Lett., 32, L14107, 2005 [10.1029/2005GL023132]
  • Mursula, K., R. Kerttula, T. Asikainen, R. Friedel, A. Vaivads, F. Søraas, M. Grande, M. Carter, P.W. Daly, T.A. Fritz, J.F. Fennell, and A. Balogh: Cluster/Rapid energetic electron observations at the dayside magnetospheric boundary, Adv. Space Res., 36, 1904-1908, 2005 [10.1016/j.asr.2004.03.021]
  • Nilsson, H., A. Kozlovsky, T. Sergienko, and A. Kotikov: Radar observations in the vicinity of pre-noon auroral arcs, Ann. Geophys., 23, 1785-1996, 2005 >>
  • Pilipenko, V., E. Fedorov, K. Mursula, and T. Pikkarainen: Generation of magnetic noise bursts during distant rocket launches, Geophysica, 41, 57-71, 2005
  • Safargaleev, V., T. Sergienko, H. Nilsson, A. Kozlovsky, S. Massetti, S. Osipenko, and A. Kotikov: Combined optical, EISCAT and magnetic observations of the omega bands/Ps6 pulsations and an auroral torch in the late morning hours: a case study, Ann. Geophys., 23, 1821-1838, 2005 >>
  • Szego, K., Z. Bebesi, G. Erdos, L. Foldy, F. Crary, D.J. McComas, D.T. Young, S. Bolton, A.J. Coates, A.M. Rymer, R.E. Hartle, E.C. Sittler, D. Reisenfeld, J.J. Bethelier, R.E. Johnson, H.T. Smith, T.W. Hill, J. Vilppola, J. Steinberg, and N. Andre: The global plasma environment of Titan as observed by Cassini Plasma Spectrometer during the first two close encounters with Titan, Appl. Phys. Lett., 32, L20S05, 2005 [10.1029/2005GL022646]
  • Usoskin, I.G., K. Alanko-Huotari, G.A. Kovaltsov, and K. Mursula: Heliospheric modulation of cosmic rays: Monthly reconstruction for 1951-2004, J. Geophys. Res. A, 110, A12108, 2005 [10.1029/2005JA011250]
  • Usoskin, I.G., M. Schüssler, S.K. Solanki, and K. Mursula: Solar activity, cosmic rays, and Earth′s temperature: A millennium-scale comparison, J. Geophys. Res. A, 110, A10102, 2005 [10.1029/2004JA010946]
  • Young, D.T., J.-J. Berthelier, M. Blanc, J.L. Burch, S. Bolton, A.J. Coates, F.J. Crary, R. Goldstein, M. Grande, T.W. Hill, R.E. Johnson, R.A. Baragiola, V. Kelhä, D.J. McComas, K. Mursula, E.C. Sittler, K.R. Svenes, K. Szegö, P. Tanskanen, M.F. Thomsen, S. Bakshi, B.L Barraclough, Z. Bebesi, D. Delapp, M.W. Dunlop, J.T. Gosling, J.D. Furman, L.K. Gilbert, D. Glenn, C. Holmlund, J.-M. Illiano, C.R. Lewis, D.R. Linder, S. Maurice, H.J. McAndrews, B.T. Narheim, E. Pallier, D. Reisenfeld, A.M. Rymer, H.T. Smith, R.L. Tokar, J. Vilppola, and C. Zinsmeyer: Composition and dynamics of plasma in Saturn´s magnetosphere, Science, 307, No. 5713, 1262-1266, 2005 [10.1126/science.1106151]


  • Aikio, A.T., K. Mursula, S. Buchert, F. Forme, O. Amm, G. Marklund, M. Dunlop, D. Fontaine, A. Vaivads, and A. Fazakerley: Temporal evolution of two auroral arcs as measured by the Cluster satellite and coordinated ground-based instruments, Ann. Geophys., 22, No. 12, 4089-4101, 2004 >>
  • Bösinger, T., A.G. Demekhov, and V.Y. Trakhtengerts: Fine structure in ionospheric Alfvén resonator spectra observed at low latitude (L = 1.3), Geophys. Res. Lett., 31, No. 18, L18802, 2004 [10.1029/2004GL020777]
  • Bösinger, T. and S.L. Shalimov: Dispersive changes in magnetic background noise polarization at 0.1 to 6 Hz during sunset and sunrise at L=1.3, Ann. Geophys., 22, No. 6, 1989-2000, 2004 >>
  • Bösinger, T., G.C. Hussey, C. Haldoupis, and K. Schlegel: Auroral E-region electron density height profile modification by electric field driven vertical plasma transport: some evidence in EISCAT CP-1 data statistic, Ann. Geophys., 22, No. 3, 901-910, 2004 >>
  • Damtie, B., M.S. Lehtinen, and T. Nygrén: Decoding of Barker-coded incoherent scatter measurements by means of mathematical inversion, Ann. Geophys., 22, No. 1, 3-13, 2004 >>
  • Holter, Ø., P. Galopeau, A. Roux, S. Perraut, A. Pedersen, A. Korth, and T. Bösinger: Two satellite study of substorm expansion near geosynchronous orbit, Ann. Geophys., 22, No.12, 4299-4310, 2004 >>
  • Jussila, J.R.T., A.T. Aikio, S. Shalimov, and S.R. Marple: Cosmic radio noise absorption events associated with equatorward drifting arcs during a substorm growth phase, Ann. Geophys., 22, No. 5, 1675-1686, 2004 >>
  • Kovaltsov, G.A., I.G. Usoskin, and K. Mursula: An upper limit on sunspot activity during the Maunder minimum, Solar Phys., 224, Nos. 1-2, 95-101, 2004 [10.1007/s11207-005-4281-6]
  • Lehtinen, M.S., B. Damtie, and T. Nygrén: Optimal binary phase codes and sidelobe-free decoding filters with application to incoherent scatter radar, Ann. Geophys., 22, No. 5, 1623-1632, 2004 >>
  • Martini, D., K. Mursula, and A. Körmendi: Possible planetary excitation of earthquakes, Acta Geod. Geoph. Hung., 39(4), 439-446, 2004
  • Mursula, K. and J.H. Vilppola: Fluctuations of the solar dynamo observed in the solar wind and interplanetary magnetic field at 1 AU and in the outer heliosphere, Solar Phys., 221, 337-349, 2004 [10.1023/B:SOLA.0000035053.17913.26]
  • Mursula, K. and T. Hiltula: Systematically asymmetric heliospheric magnetic field: Evidence for a quadrupole mode and non-axisymmetry with polarity flip-flops, Solar Phys., 224, Nos. 1-2, 133-143, 2004 [10.1007/s11207-005-4977-7]
  • Mursula, K., D. Martini, and A. Karinen: Did open solar magnetic field increase during the last 100 years: A reanalysis of geomagnetic activity, Solar Phys., 224, Nos. 1-2, 85-94, 2004 [10.1007/s11207-005-4981-y]
  • Prikner, K., K. Mursula, J. Kangas, R. Kerttula, and F.Z. Feygin: An effect of the ionospheric Alfvén resonator on multiband Pc1 pulsations, Ann. Geophys., 22, No. 2, 643-651, 2004 >>
  • Starodubtsev, S.A., I.G. Usoskin, and K. Mursula: Rapid cosmic ray fluctuations: Evidence for cyclic behaviour, Solar Phys., 224, Nos. 1-2, 335-343, 2004 [10.1007/s11207-005-4178-4]
  • Usoskin, I.G., K. Mursula, S. Solanki, M. Schüssler, and K. Alanko: Reconstruction of solar activity for the last millennium using 10Be data, Astron. Astrophys., 413, 745-751, 2004 [10.1051/0004-6361:20031533]
  • Usoskin, I.G., N. Marsh, G.A. Kovaltsov, K. Mursula, and O.G. Gladysheva: Latitudinal dependence of low cloud amount on cosmic ray induced ionization, Geophys. Res. Lett., 31, No. 16, L16109, 2004 [10.1029/2004GL019507]
  • Usoskin, I.G., S. Solanki, M. Schüssler, and K. Mursula: Reply to Raisbeck and Yiou (Phys.Rev.Lett., 92, 19, 199001-1, 2004), Phys. Rev. Lett., 92, No. 19, 199002-1, 2004 [10.1103/PhysRevLett.92.199002]
  • Vernova, E.S., K. Mursula, M.I. Tyasto, and D.G. Baranov: Long-term longitudinal asymmetries in sunspot activity: difference between the ascending and descending phase of the solar cycle, Solar Phys., 221, 151-165, 2004 [10.1023/B:SOLA.0000033367.32977.71]
  • Young, D.T. et al. (incl. Pekka Tanskanen, Kalevi Mursula and Jari Vilppola): Cassini plasma spectrometer investigation, Space Sci. Rev., 114, No. 1, 1-112, 2004 [10.1007/s11214-004-1406-4]


  • Alanko, K., I.G. Usoskin, K. Mursula, and G.A. Kovaltsov: Heliospheric modulation strength: effective neutron monitor energy, Adv. Space Res., 32(4), 615-620, 2003 [10.1016/S0273-1177(03)00348-X]
  • Amm, O., A. Aikio, J.-M. Bosqued, M. Dunlop, A. Fazakerley, P. Janhunen, K. Kauristie, M. Lester, I. Sillanpää, M.G.G.T. Taylor, A. Vontrat-Reberac, K. Mursula, and M. André: Mesoscale structure of a morning sector ionospheric shear flow region determined by conjugate Cluster II and MIRACLE ground-based observations, Ann. Geophys., 21(8), 1737-1751, 2003 >>
  • Cierpka, K., M.J. Kosch, H. Holma, A.J. Kavanagh, and T. Hagfors: Novel Fabry-Perot interferometer measurements of F-region, Geophys. Res. Lett., 30(6), 26 1-4, 2003 [10.1029/2002GL015833]
  • Danielides, M.A. and A. Kozlovsky: Rocket-born investigation of auroral patches in the evening sector during substorm recovery, Ann. Geophys., 21(3), 719-728, 2003 >>
  • Kaila, K.U.: Multichannel scanning auroral photometer, Geophysica, 39(1-2), 75-90, 2003
  • Kauristie, K., V.A. Sergeev, O. Amm, M.V. Kubyshkina, J. Jussila, E. Donovan, and K. Liou: Bursty bulk flow intrusion to the inner plasma sheet as inferred from auroral observations, J. Geophys. Res. A, 108(A1), SIA 9: 1-9, 2003 [10.1029/2002JA009371]
  • Kozlovsky, A.E., T. Turunen, A. Koustov, and G. Parks: IMF by effects in the magnetospheric convection on closed magnetic field lines, Geophys. Res. Lett., 30(24), SSC 10: 1-4, 2003 [10.1029/2003GL018457]
  • Kozlovsky, A.E., V.V. Safargaleev, J.R.T. Jussila, and A.V. Koustov: Pre-noon high-latitude auroral arcs as a manifestation of the interchange instability, Ann. Geophys., 21(12), 2303-2314, 2003 >>
  • Mursula, K. and T. Hiltula: Bashful ballerina: Southward shifted heliospheric current sheet, Geophys. Res. Lett., 30(22), SSC 2: 1-4, 2003 [10.1029/2003GL018201]
  • Mursula, K., B. Zieger, and J.H. Vilppola: Mid-term quasi-periodicities in geomagnetic activity during the last 15 solar cycles: Connection to solar dynamo strength, Solar Phys., 212, 201-207, 2003 [10.1023/A:1022980029618]
  • Mursula, K., I.G. Usoskin, and G.A. Kovaltsov: Reconstructing the long-term cosmic ray intensity: Linear relations do not work, Ann. Geophys., 21 (4), 863-867, 2003 >>
  • Safargaleev, V.V., A.E. Kozlovsky, S.V. Osipenko, and V.R. Tagirov: Azimuthal expansion of high-latitude auroral arcs, Ann. Geophys., 21(8), 1793-1805, 2003 >>
  • Usoskin, I.G. and K. Mursula: Long-term solar cycle evolution: Review of recent developments, Solar Phys., 218, 319-343, 2003 [10.1023/B:SOLA.0000013049.27106.07]
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: The lost sunspot cycle: Reanalysis of sunspot statistics, Astron. Astrophys., 403, 743-748, 2003 [10.1051/0004-6361:20030398]
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Reconstruction of monthly and yearly group sunspot numbers from sparse daily observations, Solar Phys., 218, 295-305, 2003 [10.1023/B:SOLA.0000013029.99907.97]
  • Usoskin, I.G., S. Solanki, M. Schüssler, K. Mursula, and K. Alanko: Millennium-scale sunspot number reconstruction: Evidence for an unusually active Sun since the 1940s, Phys. Rev. Lett., 91(21), 211101:1-4, 2003 [10.1103/PhysRevLett.91.211101]
  • Valdivia, J.A., A. Klimas, D. Vassiliadis, V. Uritsky, and T. Takalo: Self-organization in a current sheet model, Space Sci. Rev., 107 (1-2), 515-522, 2003 [10.1023/A:1025518527128]


  • Aikio, A.T., T. Lakkala, A. Kozlovsky, and P.J.S. Williams: Electric fields and currents of stable drifting auroral arcs in the evening sector, J. Geophys. Res. A, 107, SIA 3-1 to SIA 3-14, 2002 [10.1029/2001JA009172]
  • Bösinger, T., C. Haldoupis, P.P. Belyaev, M.N. Yakunin, N.V. Semenova, A.G. Demekhov, and V. Angelopoulos: Spectral properties of the ionospheric Alfvén resonator observed at a low-latitude station (L = 1.3), J. Geophys. Res. A, 107, SIA 4-1 to SIA 4-9, 2002 [10.1029/2001JA005076]
  • Damtie, B., T. Nygrén, M.S. Lehtinen, and A. Huuskonen: High resolution observations of sporadic-E layers within the polar cap ionosphere using a new incoherent scatter radar experiment, Ann. Geophys., 20, No. 9, 1429-1438, 2002 >>
  • Danielides, M., S. Shalimov, and J. Kangas: Magnetic impulse events at the nightside auroral latitudes and associated phenomena, Adv. Space Res., 30, No. 11, 2575-2579, 2002 [10.1016/S0273-1177(02)80346-5]
  • Danilova, O.A., M.I. Tyasto, E.V. Vashenyuk, B.B. Gvozdevskii, H. Kananen, and P. Tanskanen: Magnetospheric response to the ground-level enhancement of solar cosmic rays on May 2, 1998, Geomagn. Aeron., 42, No. 1, 28-31, 2002
  • Gladysheva, O.G., G.E. Kocharov, G.A. Kovaltsov, and I.G. Usoskin: Nitrate abundance in polar ice during the great solar activity minimum, Adv. Space Res., 29, No. 11, 1707-1711, 2002 [10.1016/S0273-1177(02)00114-X]
  • Karinen, A., K. Mursula, Th. Ulich, and J. Manninen: Does the magnetosphere behave differently on weekends?, Ann. Geophys., 20, No. 8, 1137-1142, 2002 >>
  • Kozlovsky, A., A. Koustov, W. Lyatsky, J. Kangas, G. Parks, D. Chua: Ionospheric convection in the postnoon auroral oval: Super Dual Auroral Radar Network (SuperDARN) and polar ultraviolet imager (UVI) observations, J. Geophys. Res. A, 107, A12, SIA 6-1 to SIA 6-16, 2002 [10.1029/2002JA009261]
  • Kozlovsky, A. and J. Kangas: Motion and origin of noon high-latitude poleward moving auroral arcs on closed magnetic field lines, J. Geophys. Res. A, 107, No. A2, SMP1 1-13, 2002 [10.1029/2001JA900145]
  • Lehtinen, M., J. Markkanen, A. Väänänen, A. Huuskonen, B. Damtie, T. Nygrén, and J. Rahkola: A new incoherent scatter technique in the European Incoherent Scatter (EISCAT) Svalbard radar, Radio Sci., 37, No. 4, 3-1 to 3-14, 2002 [10.1029/2001RS002518]
  • Mursula, K., I.G. Usoskin, and G.A. Kovaltsov: A 22 year cycle in sunspot activity, Adv. Space Res., 29, No. 12, 1979-1984, 2002 [10.1016/S0273-1177(02)00244-2]
  • Mursula, K., T. Hiltula, and B. Zieger: Latitudinal gradients of solar wind speed around the ecliptic: Systematic displacement of the streamer belt, Geophys. Res. Lett., 29, No. 15, 28-1 to 28-4, 2002 [10.1029/2002GL015318]
  • Prikner, K., K. Mursula, J. Kangas, F.Z. Feygin, and R. Kerttula: Numerical simulation of the high-latitude non-stationary ionospheric Alfvén resonator during an IPDP event, Stud. Geophys. Geod., 46, 507-526, 2002 >>
  • Safargaleev, V., J. Kangas, A. Kozlovsky, and A. Vasilyev: Bursts of ULF noise excited by sudden changes of solar wind dynamic pressure, Ann. Geophys., 20, No. 11, 1751-1761, 2002 >>
  • Takalo, J. and K. Mursula: Annual and solar rotation periodicities in IMF components: Evidence for phase/frequency modulation, Geophys. Res. Lett., 29, No. 9, 31-1 to 31-4, 2002 [10.1029/2002GL014658]
  • Timofeev, E.E., M.K. Vallinkoski, P. Pollari, J. Kangas, T. Virdi, P.J.S. Williams, and E. Nielsen: Flow angle dependence of 1-m ionospheric plasma wave turbulence for near-threshold radar echo electric fields, J. Geophys. Res. A, 107, No. A10, SIA 6-1 to SIA 6-14, 2002 [10.1029/2000JA005023] ERRATUM
  • Usoskin, I.G., K. Alanko, K. Mursula, and G.A. Kovaltsov: Heliospheric modulation strength during the neutron monitor era, Solar Phys., 207, 389-399, 2002 [10.1023/A:1016266801300]
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Lost sunspot cycle in the beginning of Dalton minimum: New evidence and consequences, Geophys. Res. Lett., 29, No. 24, 36-1 to 36-4, 2002 [10.1029/2002GL015640]
  • Usoskin, I.G., K. Mursula, S. Solanki, M. Schüssler, and G.A. Kovaltsov: A physical reconstruction of cosmic ray intensity since 1610, J. Geophys. Res. A, 107, No. A11, SSH 13-1 to SSH 13-6, 2002 [10.1029/2002JA009343]
  • Vernova, E.S., K. Mursula, M.I. Tyasto, and D.G. Baranov: A new pattern for the north-south asymmetry of sunspots, Solar Phys., 205, 371-382, 2002 [10.1023/A:1014264428300]


  • Boella, G., M. Gervasi, S. Mariani, P.G. Rancoita, and I.G. Usoskin: Evidence for charge drift modulation at intermediate solar activity from the flux variation of protons and alpha particles. J. Geophys. Res., 106, No. A12, 29355-29362, 2001.
  • Bräysy, T. and K. Mursula: Conjugate observations of electromagnetic ion cyclotron waves. J. Geophys. Res., 106, No. A4, 6029-6041, 2001.
  • Danielides, M.A., S. Shalimov, and J. Kangas: Estimates of the field-aligned current density in current-carrying filaments using auroral zone ground-based observations.  Ann. Geophys., 19, 699-706, 2001.
  • Danielides, M.A. and A. Kozlovsky: Auroral vortex structures as a result of disturbed geomagnetic conditions. In book: The Outer Heliosphere: The Next Frontiers. Proc. of COSPAR Colloquium, Potsdam, Germany, 24-28 July 2000. Cospar Colloquia Series, vol. 11, edited by K. Scherer, H. Fichtner, H.-J. Fahr and E. Marsch, ISBN 0-444-50909-7, Pergamon, pp. 503-506, 2001.
  • Gustafsson, G., M. André, T. Carozzi, A.I . Eriksson, C.-G. Fälthammar, R. Grard, G. Holmgren, J.A. Holtet, N. Ivchenko, T. Karlsson, Y. Khotyaintsev, S. Klimov, H. Laakso, P.-A. Lindqvist, B. Lybekk, G. Marklund, F. Mozer, K. Mursula, A. Pedersen, B. Popielawska, S. Savin, K. Stasiewicz, P. Tanskanen, A. Vaivads, and J.-E. Wahlund: First results of electric field and density observations by Cluster EFW based on initial months of operation. Annales Geophys., 19, 1219-1240, 2001.
  • Kerttula, R., K. Mursula, T. Pikkarainen, and J. Kangas: Storm-time Pc1 activity at high and middle latitudes.  J. Geophys. Res., 106, No. A4, 6213-6227, 2001.
  • Kerttula, R., K. Mursula, T. Pikkarainen, and J. Kangas: Effect of magnetic storm intensity on Pc1 activity at high and mid-latitudes. J. Atm. Solar-Terr. Phys., 63, 503-511, 2001.
  • Kozlovsky, A., T. Lakkala, J. Kangas, and A. Aikio:  Response of the quiet auroral arc motion to ionospheric convection variations.  J. Geophys. Res., 106, No. A10, 21,463-21,473, 2001.
  • Mursula, K., T. Bräysy, K. Niskala, and C.T. Russell: Pc1 pearls revisited: Structured electromagnetic ion cyclotron waves on Polar satellite and on ground.  J. Geophys. Res., 106, No. A12, 29,543-29,553, 2001.
  • Mursula, K., I.G. Usoskin, and G.A. Kovaltsov: Persistent 22-year cycle in sunspot activity: Evidence for a relic solar magnetic field. Solar Physics, 198, 51-56, 2001.
  • Mursula, K. and B. Zieger: Long-term north-south asymmetry in solar wind speed inferred from geomagnetic activity: A new type of century-scale solar oscillation? Geophys. Res. Lett., 28, No. 1, 95-98, 2001.
  • Prikner, K., K. Mursula, J. Kangas, and F.Z. Feygin: Ionospheric Alfvén resonator control over the frequency-variable Pc1 event in Finland on May 14, 1977. Studia Geoph. et Geod., 45, 363-381, 2001.
  • Sucksdorff, C., T. Bösinger, J. Kangas, K. Mursula, T. Nygrén, K. Kauristie, and H. Koskinen: Space physics.  Geophysica, 37 (1-2), 309-355, 2001.
  • Takalo, J. and K. Mursula: A model for the diurnal universal time variation of the Dst index.  J. Geophys. Res., 106, No. A6, 10905-10914, 2001.
  • Takalo, J., J. Timonen, A.J. Klimas, J.A. Valdivia, and D. Vassiliadis: A coupled map as a model of the dynamics of the magnetotail current sheet. J. Atm. Solar-Terr. Phys., 63, 1407-1414, 2001.
  • Usoskin, I.G., P. Bobik, O.G. Gladysheva, H. Kananen, G.A. Kovaltsov, and K. Kudela: Sensitivity of a neutron monitor to galactic cosmic rays.  Adv. Space Res., 27, No. 3, 565-569, 2001.
  • Usoskin, I.G., K. Mursula, H. Kananen, and G.A. Kovaltsov: Dependence of cosmic rays on solar activity for odd and even solar cycles.  Adv. Space Res., 27, No. 3, 571-576, 2001.
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Was one sunspot cycle lost in late XVIII century? Astron. Astrophys., 370, L31-L34, 2001.
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Simulation of sunspot activity during active Sun and great minima using regular, random and relic fields.  Solar Physics, 199, 187-199, 2001.
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Heliospheric modulation of cosmic rays and solar activity during the Maunder minimum.  J. Geophys. Res., 106, No. A8, 16039-16046, 2001.
  • Vilenius, E., T. Nygrén, M. Lehtinen, M. Markkanen, and A. Väänänen: Ionospheric tomography.  The Photogrammetric Journal of Finland, 17, No. 2, 78-91, 2001.
  • Vilppola, J.H., P.J. Tanskanen, B.L. Barraclough, and D.J. McComas: Comparison between simulations and calibrations of a high resolution electrostatic analyzer.  Rev. Scient. Instruments, 72, No. 9, 3662-3669, 2001.
  • Wilken, B., P.W. Daly, U. Mall, K. Aarsnes, D.N. Baker, R.D. Belian, J.B. Blake, H. Borg, J. Büchner, M. Carter, J.F. Fennell, R. Friedel, T.A. Fritz, F. Gliem, M. Grande, K. Kecskemety, G. Kettmann, A. Korth, S. Livi, S. McKenna-Lawlor, K. Mursula, B. Nikutowski,  C.H. Perry,  Z.Y. Pu, J. Roeder,  G.D. Reeves, E.T. Sarris, I. Sandahl, F. Søraas, J. Woch, and Q.-G. Zong: First results from the RAPID imaging energetic particle spectrometer on board Cluster. Ann. Geophys., 19, 1355-1366, 2001.
  • Yahnin, A.G., V.A. Sergeev, T. Bösinger, T.I. Sergienko, I.A. Kornilov, N.L. Borodkova, M.F. Thomsen, R.D. Belian, J.-A. Sauvaud, V.N. Lutsenko, and A.A. Skalsky: Correlated Interball/ground-based observations of isolated substorm: The pseudobreakup phase.  Ann. Geophys., 19, 687-698, 2001.


  • Bösinger, T., T. Pashin, A. Kero, P. Pollari, P. Belyaev, M. Rietveld, T. Turunen, and J. Kangas: Generation of artificial magnetic pulsations in the Pc1 frequency range by periodic heating of the Earth’s ionosphere: indications of ionospheric Alfvén resonator effects. J. Atm. Solar-Terr. Phys., 62, 277-297, 2000.
  • Demekhov, A.G., V.Yu. Trakhtengerts, and T. Bösinger: Pc 1 waves and ionospheric Alfvén resonator: Generation or filtration? Geophys. Res. Lett., 27, No. 23, 3805-3808, 2000.
  • Feygin, F.Z., N.G. Kleimenova, O.A. Pokhotelov, M. Parrot, K. Prikner, K. Mursula, J. Kangas, and T. Pikkarainen: Nonstationary pearl pulsations as a signature of magnetospheric disturbances. Ann. Geophys., 18, 517-522, 2000.
  • Holma, H.J., K.U. Kaila, and J.R.T. Jussila: Temperatures, emission heights and energies in discrete auroral forms.  Phys. Chem. Earth (B) 25, No. 5-6, 463-466, 2000.  
  • Kaila, K.U. and H.J. Holma: Absolute calibration of photometer.  Phys. Chem. Earth (B) 25, No. 5-6, 467-470, 2000.  
  • Kero, A., T. Bösinger, P. Pollari, E. Turunen, and M. Rietveld: First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere.  Ann. Geophys., 18, 1210-1215, 2000.
  • Klimas, A.J., J.A. Valdivia, D. Vassiliadis, D.N. Baker, M. Hesse, and J. Takalo: Self-organized criticality in the substorm phenomenon and its relation to localized reconnection in the magnetospheric plasma sheet.  J. Geophys. Res., 105, No. A8, 18,765-18,780, 2000.  
  • Mursula, K. and B. Zieger: The 1.3-year variation in solar wind speed and geomagnetic activity. Adv. Space Res., 25, No. 9, 1939-1942, 2000.
  • Mursula, K., K. Prikner, F.Z. Feygin, T. Bräysy, J. Kangas, R. Kerttula, P. Pollari, T. Pikkarainen, and O.A. Pokhotelov: Non-stationary Alfvén resonator: new result on Pc1 pearls and IPDP events. J. Atm. Solar-Terr. Phys., 62, 299-309, 2000.
  • Nygrén, T., M. J. Taylor, G. R. Swenson, and M. S. Lehtinen: Observing gravity wave activity in mesopause region by means of airglow tomography. Adv. Space Res., 26, No. 6, 903-906, 2000.  
  • Nygrén, T., E. D. Tereshchenko, B. Z. Khudukon, O. V. Evstafiev, M. S. Lehtinen, and M. Markkanen: Manifestations of field-aligned currents in tomographic observations of the ionospheric F region. Adv. Space Res., 26, No. 6, 939-942, 2000.
  • Prikner, K., K. Mursula, F.Z. Feygin, J. Kangas, R. Kerttula, T. Pikkarainen, O.A. Pokhotelov, and V. Vagner: Non-stationary Alfvén resonator: vertical profiles of wave characteristics. J. Atm. Solar-Terr. Phys., 62, 311-322, 2000.
  • Takalo, J., K. Mursula, and J. Timonen: Role of the driver in the dynamics of a coupled-map model of the magnetotail: Does the magnetosphere act as a low pass filter?  J. Geophys. Res., 105, No. A12, 27665-27672, 2000.
  • Tereshchenko, E.D., B.Z. Khudukon, M.O. Kozlova, O.V. Evstafiev, T. Nygrén, M.T. Rietveld, and A. Brekke: Comparison of the orientation of small-scale electron density irregularities and F region plasma flow direction. Ann. Geophys., 18, 918-928, 2000.
  • Tereshchenko, E.D., M.O. Kozlova, O.V. Evstafiev, B.Z. Khudukon, T. Nygrén, M. Rietveld, and A. Brekke: Irregular structures of the F layer at high latitudes during ionospheric heating. Ann. Geophys., 18, 1197-1209, 2000.
  • Trakhtengerts, V.Y., P.P. Belyaev, S.V. Polyakov, A.G. Demekhov, and T. Bösinger: Excitation of Alfvén waves and vortices in the ionospheric Alfvén resonator by modulated powerful radio waves. J. Atm. Solar-Terr. Phys., 62, 267-276, 2000.
  • Ulich, Th., E. Turunen, and T. Nygrén: Effective recombination coefficient in the lower ionosphere during bursts of auroral electrons. Adv. Space. Res., 25, 47-50, 2000.
  • Usoskin, I.G., K. Mursula, and G.A. Kovaltsov: Cyclic behaviour of sunspot activity during the Maunder minimum. Astron. Astrophys., 354, L33-L36, 2000.


  • Aikio, A. T., V. A. Sergeev, M. A. Shukhtina, L. I. Vagina, V. Angelopoulos, and G. D. Reeves: Characteristics of pseudobreakups and substorms observed in the ionosphere, at the geosynchronous orbit, and in the midtail. J. Geophys. Res., 104, No. A6, 12,263-12,287, 1999.
  • Belyaev, P. P., T. Bösinger, S. V. Isaev, V. Y. Trakhtengerts, and J. Kangas: First evidence at high latitudes for the ionospheric Alfvén resonator. J. Geophys. Res., 104, No. A3, 4305-4317, 1999.
  • Danielides, M. A., A. Ranta, N. Ivchenko, J. Jussila, G. Marklund, and F. Primdahl: Measurement of auroral characteristics by Auroral Turbulence II sounding rocket. Geophysica, 35, Nos. 1-2, 33-44, 1999.
  • Danilova, O., M. Tyasto, H. Kananen, and P. Tanskanen: The cosmic ray asymptotic directions for station Oulu in the magnetic field of the Tsyganenko 1989 model. Geophysica, 35, Nos. 1-2, 101-109, 1999.
  • Kangas, J., J. Kultima, T. Pikkarainen, R. Kerttula, and K. Mursula: Solar cycle variation in the occurrence rate of Pc1 and IPDP type magnetic pulsations at Sodankylä. Geophysica, 35, Nos. 1-2, 23-31, 1999.
  • Kozlovsky, A. and W. Lyatsky: Finite Larmor radius convection instability in the near-Earth plasma sheet. J. Geophys. Res., 104, No. A2, 2443-2449, 1999.
  • Mursula, K., T. Bräysy, R. Rasinkangas, P. Tanskanen, and F. Mozer: A modulated multiband Pc1 event observed by Polar/EFI around the plasmapause. Adv. Space Res., 24, 81-84, 1999.
  • Mursula, K., J. Kangas, R. Kerttula, T. Pikkarainen, A. Guglielmi, O. Pokhotelov, and A. Potapov: New constraints on theories of Pc1 pearl formation. J. Geophys. Res., 104, No. A6, 12,399-12,406, 1999.
  • Pietrowski D., K. A. Lynch, R. B. Torbert, G. Marklund, N. Ivchenko, A. Ranta, M. Danielides, and M. C. Kelley: Multipoint measurements of large DC electric fields and shears in the auroral zone. Geophys. Res. Lett., 26, No. 22, 3369-3372, 1999.
  • Tagirov, V. R., V. S. Ismagilov, E. E. Titova, V. A. Arinin, A. M. Perlikov, J. Manninen, T. Turunen, and K. Kaila: Auroral pulsations and accompanying VLF emissions. Ann. Geophys. 17, 66-78, 1999.
  • Usoskin, I.G., O.G. Gladysheva, P. Bobik, K. Kudela, and H. Kananen: Connections between neutron monitor count rate and solar modulation strength. Czechoslovak J. of Physics, 49, No. 12, 1743-1749, 1999.
  • Tereshchenko, E. D., B. Z. Khudukon, M. O. Kozlova, and T. Nygrén: Anisotropy of ionospheric irregularities determined from the amplitude of satellite signals at a single receiver. Ann. Geophys., 17, 508-518, 1999.


  • Bikkuzina, G., V. Sergeev, and T. Bösinger, Particle boundaries during a solar electron event.In book: Polar Cap Boundary Phenomena, eds. J. Moen, A. Egeland and M. Lockwood. NATO ASI series C, 509, pp. 355-367, ISBN 0-7923-4976-8, Kluwer Acad. Press, Dordrecht 1998.
  • Bräysy, T., K. Mursula, and G. Marklund, Ion cyclotron waves during a great magnetic storm observed by Freja double-probe electric field instrument, J. Geophys. Res., 103, 4145-4155, 1998.
  • Eglitis, P., I. W. McCrea, T. R. Robinson, T. Nygrén, K. Schlegel, T. Turunen, and T. B. Jones, New techniques for auroral irregularity studies with COSCAT, Ann. Geophys., 16, 1241-1250, 1998.
  • Feygin, F. Z., O. A. Pokhotelov, D. O. Pokhotelov, K. Mursula, J. Kangas, T. Bräysy, and R. Kerttula, Effects of heavy ions on ponderomotive forces due to ion cyclotron waves, J. Geophys. Res., 103, 20481-20486, 1998.
  • Frey, H. U., S. Frey, D. Larson, T. Nygrén, and J. Semeter, Tomographic methods for magnetospheric applications. In book: Science Closure and Enabling Technologies for Constellation Class Missions, eds. V. Angelopoulos and P.V. Panetta, pp. 72-77, ISBN 0-9670138-0-1, University Press, California, 1998.
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  • Lanchester, B. S., M. H. Rees, K. J. F. Sedgemore, J. R. Palmer, H. U. Frey, and K. U. Kaila, Ionospheric response to variable electric fields in small-scale auroral structures, Ann. Geophys., 16, 1343-1354, 1998.
  • Lazutin, L. L., R. Rasinkangas, T. V. Kozelova, A. Korth, H. Singer, G. Reeves, W. Riedler, K. Torkar, and B. B. Gvozdevsky, Observations of substorm fine structure, Ann. Geophys., 16, 775-786, 1998.
  • Mursula, K., and T. Ulich, A new mehod to determine the solar cycle length, Geophys. Res. Lett., 25, 1837-1840, 1998.
  • Mursula, K., and B. Zieger, Solar excursion phases during the last 14 solar cycles, Geophys. Res. Lett., 25, 1851-1854, 1998.
  • Nygrén, T., M. J. Taylor, M. S. Lehtinen, and M. Markkanen, Application of tomographic inversion in studying airglow in the mesopause region. Ann. Geophys., 16, 1180-1189, 1998.
  • Pellinen-Wannberg, A., A. Westman, G. Wannberg, and K. Kaila, Meteor fluxes and visual magnitudes from EISCAT radar event rates: a comparison with cross-section based magnitude estimates and optical data. Ann. Geophys., 16, 1475-1485, 1998.
  • Pokhotelov, O. A., D. O. Pokhotelov, F. Z. Feygin, M. Parrot, J. Kangas, K. Mursula, P. K. Shukla, and L. Stenflo, Excitation of helium cyclotron harmonic waves during quiet magnetic conditions, J. Geophys. Res., 103, 26585-26593, 1998.
  • Rasinkangas, R. and K. Mursula, Modulation of magnetospheric EMIC waves by Pc 3 pulsations of upstream origin, Geophys. Res. Lett., 25, 869-872, 1998.
  • Sergeev, V. A., M. A. Shukhtina, R. Rasinkangas, A. Korth, G. D. Reeves, H. J. Singer, M. F. Thomsen, and L. I. Vagina, Event study of deep energetic particle injections during substorm, J. Geophys. Res., 103, 9217-9234, 1998.
  • Usoskin, I. G., H. Kananen, K. Mursula, P. Tanskanen, and G. A. Kovaltsov, Correlative study of solar activity and cosmic ray intensity, J. Geophys. Res., 103, 9567-9574, 1998.
  • Vilppola J. H., P. J. Tanskanen and B. L. Barraclough, Magnetospheric research with advanced techniques: Simulation of a spherical section electrostatic analyzer, in book ed. by R. L. Xu and A. T.Y. Lui of COSPAR Colloquium, April 1996, Beijing, China. ISBN 0-08-043330-8, Elsevier Science Ltd, July 1998.
  • Young, D. T., B. L. Barraclough, J. J. Berthelier, M. Blanc, J. L. Burch, A. J. Coates, R. Goldstein, M. Grande, T. W. Hill, J. M. Illiano, M. A. Johnson, R. E. Johnson, R. A. Baragiola, V. Kelhä, D. Linder, D. J. McComas, B. T. Narheim, J. E. Nordholt, A. Preece, E. C. Sittler, K. R. Svenes, S. Szalai, K. Szegö, P. Tanskanen, and K. Viherkanto, Cassini plasma spectrometer investigation, AGU Geophysical Monograph 102, 237-242, 1998.
  • Zieger, B., and K. Mursula, Annual variation in near-Earth solar wind speed: Evidence for persistent north-south asymmetry related to solar magnetic polarity, Geophys. Res. Lett., 25, 841-844, 1998.


  • Feygin, F., O. A. Pokhotelov, D. O. Pokhotelov, T. Bräysy, J. Kangas and K. Mursula: Exo-plasmaspheric refilling due to ponderomotive forces induced by geomagnetic pulsations. J. Geophys. Res., 102, 4841-4845, 1997.
  • Guglielmi, A., J. Kangas, D. Milling, D. Orr, and O. Pokhotelov, Range finding of Alfvén oscillations and direction finding of ion-cyclotron waves by using the ground-based ULF finder, Ann. Geophys., 15, 424-429, 1997.
  • Gustafsson, G., R. Boström, B. Holback, G. Holmgren, A. Lundgren, K. Stasiewics, L. Åhlén, F. Mozer, D. Pankow, P. Harvey, P. Berg, R. Ulrich, A. Pedersen, R. Schmidt, A. Butler, A. Fransen, D. Klinge, M. Thomsen, C.-G. Fälthammar, P.-A. Lindqvist, S. Christenson, J. Holtet, B. Lybekk, T. Sten, P. Tanskanen, K. Lappalainen, and J. Wygant: The electric field and wave experiment for the Cluster mission. Space Science Reviews, 79, 137-156, 1997.
  • Gvozdevsky, B. B., V. A. Sergeev, and K. Mursula, Long lasting energetic proton precipitation in the inner magnetosphere after substorms, J. Geophys. Res., 102, 24333-24338, 1997.
  • Lanchester, B. S., M. H. Rees, D. Lummerzheim. A. Otto, H. U. Frey, and K. Kaila, Large fluxes of auroral electrons in filaments of 100 m width., J. Geophys. Res., 102, 9741-9748, 1997.
  • Markkanen, M. and T. Nygrén: Long alternating codes, 2. Practical search method. Radio Science, 32, No. 1, 9-18, 1997.
  • Mursula, K., R. Rasinkangas, T. Bösinger, R.E. Erlandson, and P.-A. Lindqvist: Nonbouncing Pc 1 wave bursts. J. Geophys. Res., 102, 17611-17624, 1997.
  • Mursula, K., B. Zieger, and I. Usoskin, On the claimed 5.5-year periodicity in solar activity, Solar Phys., 176, 201-210, 1997.
  • Nygrén, T. and M. Markkanen: Long alternating codes, 1. Search by playing dominoes. Radio Science, 32, No. 1, 1-8, 1997.
  • Nygrén, T., K. Kaila, M. Markkanen, and M. Lehtinen: Tomographic inversion of auroral camera or photometer observations. Adv. Space Res., 19, 639-642, 1997.
  • Nygrén, T., M. Markkanen, M. Lehtinen, E. D. Tereshchenko and B. Z. Khudukon, Stochastic inversion in ionospheric radiotomography, Radio Science, 32, 2359-2372, 1997.
  • Nygrén, T., E.D. Tereshchenko, B.Z. Khudukon, O.V. Evstafiev, M. Lehtinen, and M. Markkanen:  Mapping the ionospheric F region by means of satellite tomography.  Acta Geod. Geoph. Hung., 32(3-4), 395-405, 1997.
  • Oikarinen, A., J. Manninen, J. Kultima and T. Turunen, Observations of intensity variations and harmonics of the heater induced VLF waves, J. Atmos. Terr. Phys., 59, 2351-2360, 1997.
  • Pokhotelov, O.A., D.O. Pokhotelov, F.Z. Feygin, V.A. Gladychev, M. Parrot, K. Hayashi, J. Kangas, and K. Mursula, Oxygen cyclotron harmonic waves in the deep plasmaphere during magnetic storms. J. Geophys. Res., 102, 77-83, 1997.
  • Saksman, E., T. Nygrén, and M. Markkanen: Ionospheric structures invisible in satellite radiotomography. Radio Science, 32, No. 2, 605-616, 1997.
  • Smirnov, V. S., V. S. Ismagilov, E. V. Vashenyuk, H. Kananen, K. Mursula, and P. Tanskanen, The strong IMF fluctuations and their auroral zone geomagnetic response, Phys. and Chem. of the Earth, 22, 697 - 700, 1997.
  • Takahashi, K., B. J. Anderson, S. Ohtani, G. D. Reeves, S. Takahashi, T. E. Sarris, and K. Mursula, Drift-shell splitting of energetic ions injected at pseudo-substorm onsets, J. Geophys. Res., 102, 22117-22130, 1997.
  • Usoskin, I.G., G.A. Kovaltsov, H. Kananen, K. Mursula, and P. Tanskanen, Phase evolution of solar activity and cosmic-ray variation cycles. Solar Physics, 170, 447-452, 1997.
  • Usoskin, I. G., G. A. Kovaltsov, H. Kananen, and P. Tanskanen, The world neutron monitor network as a tool for the study of solar neutrons, Ann. Geophys., 15, 375-386, 1997.
  • Wilken, B., W. Axford, I. Dablis, P. Daly, W. Güttler, W. Ip, A. Korth, G. Kremser, S. Livi, V. Vasyliunas, J. Woch, D. Baker, R. Belian, J. Blake, J. Fennell, L. Lyons, H. Borg, T. Fritz, F. Gliem, R. Rahje, M. Grande, D. Hall, K. Kecsuemety, S. McKenna-Lawlor, K. Mursula, P. Tanskanen, Z. Pu, I. Sandahl, E. Sarris, M. Scholer, M. Schulz, F. Søraas, and S. Ullaland, RAPID. The imaging energetic particle spectrometer on Cluster. Space Science Reviews, 79, 399-473, 1997.
  • Yahnin, A.G., V.G. Vorobjev, T. Bösinger, R. Rasinkangas, D.G. Sibeck, and P.T. Newell, On the source region of traveling convection vortices. Geophys. Res. Lett., 24, No. 3, 237-240, 1997.


  • Aikio, A. and K. Kaila, A substorm observed by EISCAT and other ground-based instruments - evidence for near-Earth substorm initiation, J. Atmos. Terr. Phys., 58, 5-21, 1996.
  • Aikio, A.T., L.G. Blomberg, G.T. Marklund, and M. Yamauchi, On the origin of the high-altitude electric field fluctuations in the auroral zone. J. Geophys. Res., 101, 27,157-27,170, 1996.
  • Bösinger, T., K. Kaila, R. Rasinkangas, P. Pollari, J. Kangas, V. Trakhtengerts, A. Demekhov, and T. Turunen, An EISCAT study of a pulsating auroral arc: simultaneous ionospheric electron density, auroral luminosity and magnetic field pulsations, J. Atmos. Terr. Phys., 58, 23-35, 1996.
  • Eglitis, P., I.W. McCrea, T.R. Robinson, T.B. Jones, K. Schlegel, and T. Nygrén, Flow dependence of COSCAT spectral characteristics, J. Atmos. Terr. Phys., 58, 189-203, 1996.
  • Erlandson, R.E., K. Mursula, and T. Bösinger, Simultaneous ground-satellite observations of structured Pc 1 pulsations. J. Geophys. Res., 101, 27,149-27,156, 1996.
  • Guglielmi, A., F. Feygin, K. Mursula , J. Kangas, T. Pikkarainen, and A. Kalisher, Fluctuations of the repetition period of Pc1 pearl pulsations, Geophys. Res. Lett., 23, 1041-1044, 1996.
  • Guglielmi, A., J. Kangas, K. Mursula, T. Pikkarainen, O. Pokhotelov, and A. Potapov, Pc1 induced electromagnetic lift of background plasma in the magnetosphere, J. Geophys. Res., 101, 21,493-21,500, 1996.
  • Huuskonen, A., M. S. Lehtinen, and J. Pirttilä, Fractional lags in alternating codes: Improving incoherent scatter measurements by using lag estimates at noninteger multiples of baud length, Radio Science, 31, 245-261, 1996.
  • Kleimenova, N.G., J. Kangas, T. Pikkarainen, and H. Ranta, IPDP geomagnetic pulsations and the main ionospheric trough (English Translation), Geomagn. Aeron., 35, 773-780, 1996.
  • Lanchester, B. S., K. Kaila, and I. W. McCrea, Relationship between large horizontal electric fields and auroral arc elements. J. Geophys. Res., 101, 5075-5084, 1996.
  • Lehtinen, M.S., A. Huuskonen, and J. Pirttilä, First experiences of full-profile analysis with GUISDAP, Ann. Geophys., 14, 1487-1495, 1996.
  • Manninen, J., T. Turunen, A. Lubchich, E. Titova, and T. Yahnina, Relations of VLF emissions to impulsive electron precipitation measured by EISCAT radar in the morning sector of auroral oval, J. Atmos. Terr. Phys., 58, 97-106, 1996.
  • Markkanen, M., T. Nygrén, A 64-bit strong alternating code discovered, Radio Science, 31, 241-243, 1996.
  • Mursula, K., B.J. Anderson, R.E. Erlandson, and T. Pikkarainen, Solar cycle change of Pc1 waves observed by an equatorial satellite and on the ground, Adv. Space Res., 17, (10)51-(10)55, 1996.
  • Mursula, K. and B. Zieger, The 13.5-day periodicity in the Sun, solar wind and geomagnetic activity: The last three solar cycles, J. Geophys. Res., 101, 27,077-27,090, 1996.
  • Nygrén, T. and T. Turunen, The ability of the EISCAT radar in measuring fast variations and low values of E region electron density, Adv. Space Res., 18, (3)75-(3)78, 1996.
  • Nygrén, T., A. Huuskonen, and P. Pollari, Alternating-coded multipulse codes for incoherent scatter experiments, J. Atmos. Terr. Phys., 58, 465-477, 1996.
  • Nygrén, T., Studies of the E-region ion-neutral collision frequency using the EISCAT incoherent scatter radar, Adv. Space Res., 18, (3)79-(3)82, 1996.
  • Nygrén, T., M. Markkanen, M. Lehtinen, and K. Kaila, Application of stochastic inversion in auroral tomography, Ann. Geophys., 14, 1124-1133, 1996.
  • Nygrén, T., M. Markkanen, M. Lehtinen, E.D. Tereshchenko, B.Z. Khudukon, O.V. Evstafiev, and P. Pollari, Comparison of F region electron density observations by satellite radio tomography and incoherent scatter methods, Ann. Geophys., 14, 1422-1428, 1996.
  • Plyasova-Bakounina, T.A., J. Kangas, K. Mursula, O.A. Molchanov, and A.W. Green, Pc 1-2 and Pc 4-5 pulsations observed at a network of high-latitude stations, J. Geophys. Res., 101, 10965-10973, 1996.
  • Rietveld, M.T., E. Turunen, H. Matveinen, N.P. Goncharov, and P. Pollari, Artificial periodic irregularities in the auroral ionosphere. Ann. Geophys., 14, 1437-1453, 1996.
  • Safargaleev, V., T. Turunen, W. Lyatsky, J. Manninen, and A. Kozlovsky, Imaging and EISCAT radar measurements of an auroral prebreakup event, Ann. Geophys., 14, 1170-1176, 1996.
  • Sergeev, V., A. Aikio, T. Bösinger, A. Brekke, L. Häkkinen, J. Kangas, R. Pellinen, and P. Pollari, Nighttime patterns of ionospheric convection, conductance, horizontal and field-aligned currents during a steady magnetospheric convection event, J. Atmos. Terr. Phys., 58, 107-119, 1996.
  • Vilppola, J. H., P. J. Tanskanen, H. Huomo, and B. L. Barraclough, Simulations of the responce function of a plasma ion beam spectrometer for the Cassini mission to Saturn, Rev. Sci. Instrum., 67, 1494-1501, 1996.
  • Yahnin, A., T. Bösinger, R. Belian, T. Bräysy, K. Mursula, and H. Singer, Energy spectra of protons and electrons in two longitudinally separate parts of a substorm injection region, Cosmic Research. Translated from Kosmicheskie Issledovaniya, 34, 432-437, 1996.
  • Yamauchi, M., R. Lundin, K. Mursula, G. Marklund, and T.A. Potemra, Dayside Pc5 pulsation detected by Viking ion data at L=4, Geophys. Res. Lett., 23, 2517-2520, 1996.


  • Aikio, A. T., G. T. Marklund, J. Woch, and T. A. Potemra, Small-scale structures in the high-altitude auroral electric field, Ann. Geophys., 13, 84-94, 1995.
  • Eglitis, P., T.R. Robinson, L.W. McCrea, K. Schlegel, T. Nygrén, and A.S. Rodger, Doppler spectrum statistics obtained from three different-frequency radar auroral experiments, Ann. Geophys., 13, 56-65, 1995.
  • Elphinstone, R. D., D. J. Hearn, L. L. Cogger, J. S. Murphree, H. Singer, V. Sergeev, K. Mursula, D. M. Klumpar, G. D. Reeves, M. Johnson, S. Ohtani, T. A. Potemra, I. Sandahl, E. Nielsen, M. Persson, H. Opgenoorth, P. T. Newell, and Y. I. Feldstein, Observations in the vicinity of substorm onset: Implications for the substorm process, J. Geophys. Res., 100, 7937-7969, 1995.
  • Elphinstone, R.D., D.J. Hearn, L.L. Cogger, J.S. Murphree, A. Wright, I. Sandahl, S. Ohtani, P.T. Newell, D.M. Klumpar, M. Shapshak, T.A. Potemra, K. Mursula, and J.A. Sauvaud, Double oval UV auroral distribution. 2. The most poleward arc system and the dynamics of the magnetotail. - J. Geophys. Res., 100, 12093-12102, 1995.
  • Elphinstone, R.D., J.S. Murphree, D.J. Hearn, L.L. Cogger, I. Sandahl, P.T. Newell, D.M. Klumpar, S. Ohtani, J.A. Sauvaud, T.A. Potemra, K. Mursula, A. Wright, and M. Shapshak: The double oval UV auroral distribution, 1. Implications for the mapping of auroral arcs, J. Geophys. Res., 100, 12,075-12,092, 1995.
  • Harvey, P., F.S. Mozer, D. Pankow, J. Wygant, N.C. Maynard, H. Singer, W. Sullivan, P.B. Anderson, R. Pfaff, T. Aggson, A. Pedersen, C.-G. Fälthammar, and P. Tanskanen, The electric field instrument on the polar satellite, Space Science Reviews, 71, 583-596, 1995.
  • Kangas, J. and Cao Chong, Pulsating aurora - a review, Antarctic research, 6, No. 1, 39-50, 1995.
  • Kovaltsov. G.A., I.G. Usoskin, L.G. Kocharov, H. Kananen, and P.J. Tanskanen, Neutron monitor data on the 15 June 1991 flare: Neutrons as a test for proton acceleration scenario, Solar Physics, 158, 395-398, 1995.
  • Kovaltsov. G.A., L.G. Kocharov, I.G. Usoskin, H. Kananen, P. Tanskanen, and A.Ya. Drobysh, Two components of high energy neutrons at the 24 May 1990 solar flare, Izvestiya RAN, Ser. Fyz., 59, No. 4, 199-203, 1995 (in Russian).
  • Kremser, G., J. Woch, K. Mursula, P. Tanskanen, B. Wilken, and R. Lundin, Origin of energetic ions in the polar cusp inferred from ion composition measurements by the Viking satellite, Ann. Geophys., 13, 595-607, 1995.
  • Markkanen, M., M. Lehtinen, T. Nygrén, J. Pirttilä, P. Henelius, E. Vilenius, E.D. Tereshchenko, and B.Z. Khudukon, Bayesian approach to satellite radiotomography with applications in the Scandinavian sector, Annales geophysicae, 13, 1277-1287, 1995.
  • Usoskin, I.G., G.A. Kovaltsov, L.G. Kocharov, H. Kananen, and P. Tanskanen, Solar neutron detection: the method of weighted summarizing of neutron monitor responses, Izvestiya RAN, Ser. Fyz., 59, No. 4, 10-14, 1995 (in Russian).
  • Yahnin, A., E. Titova, A. Lubchich, T. Bösinger, J. Manninen, T. Turunen, T. Hansen, O. Troshichev, and A. Kotikov, Dayside high latitude magnetic impulsive events: their characteristics and relationship to sudden impulses, J. Atmosp. Terr. Phys., 57, No. 13, 1569-1582, 1995.


  • Erlandson, R.E., L.J. Zanetti, M.J. Engebretson, R. Arnoldy, T. Bösinger, and K. Mursula, Pc1 waves generated by a magnetospheric compression during the recovery phase of a geomagnetic storm. Solar wind sources of magnetospheric ultra-low-frequecy waves, Editors: M.J. Engebretson, K. Takahashi and M. Scholer, AGU Geophys. Monogr., 81, 399-407, 1994.
  • Feygin, F.Z., A.K Nekrasov, K. Mursula, J. Kangas, and T. Pikkarainen, Coherent multiple Pc1 pulsation ands: possible evidence for the ionosperic Alfvén resonator, Ann. Geophys., 12, 147-151, 1994.
  • Khudukon, B.Z., E.D. Tereshchenko, A.V. Galinov, A.A. Popov, and T. Nygrén, Determination of drift velocity and anisotropy of irregularities in the auroral ionosphere using radio source scintillation, J. Atmos. Terr. Phys., 56, 93-102, 1994.
  • Kremser, G., R. Rasinkangas, P. Tanskanen, B. Wilken, and G. Gloeckler, Solar wind contribution to the average population of energetic He+ and He++ ions in the Earth's magnetosphere, Ann. Geophys., 12, 152-168, 1994.
  • Kunitsyn, V.E., E.S. Andreeva, E.D. Tereshchenko, B.Z. Khudukon, and T. Nygrén, Investigations of the ionosphere by satellite radiotomography, Int. J. of Imaging Systems and Technology, 5, 112-127, 1994.
  • Lanchester, B.S., J.R. Palmer, M.H. Rees, D. Lummerzheim, K. Kaila, and T. Turunen, Energy flux and characteristic energy of an elemental auroral structure, Geophys. Res. Lett., 21, 2789-2792, 1994.
  • Manninen, J., T. Turunen, J. Kultima, and E. Titova, Correlating optical emissions, quasi-periodic VLF emissions and magnetic Pc3 pulsations, Geomagn. Aeron., 34, 42-47, 1994.
  • Marklund, G. T., L. G. Blomberg, P.-A. Lindqvist, C.-G. Fälthammar, G. Haerendel, F. S. Mozer, A. Pedersen, and P. Tanskanen, The double probe electric field experiment on Freja: experiment description and first results, Space Sci. Rev., 70, 483-508, 1994.
  • Mursula, K., J. Kangas, and T. Pikkarainen, Properties of structured and unstructured Pc1 pulsations at high latitudes: Variation over the 21st solar cycle. Solar wind sources of magnetospheric ultra-low-frequency waves, Editors: M.J. Engebretson, K. Takahashi and M. Scholer, AGU Geophys. Monogr., 81, 409-415, 1994.
  • Mursula, K., J. Kangas and J. Kultima, Looking back at the early years of Pc 1 pulsation research. EOS, Transac., American Geophys. Union, 75, No. 31, pages 357 and 365, 1994.
  • Mursula, K., L.G. Blomberg, P.-A. Lindqvist, G.T. Marklund, T. Bräysy, R. Rasinkangas, and P. Tanskanen, Dispersive Pc1 bursts observed by Freja, Geophys. Res. Lett., 21, 1851-1854, 1994.
  • Novikov, Yu.P., A.A. Mironov, E.E. Titova, T.A. Yakhnina, V.R. Tagirov, S.A. Chernouss, V.I. Salin, J. Manninen, and T. Turunen, Space-time variations of pulsed auroral spots and their relevance to the chorus-type VLF emissions. Geomagn. Aeron., 34, No. 5, 32-36, 1994 (in Russian).
  • Persson, M.A.L., H.J. Opgenoorth, T.I. Pulkkinen, A.I. Eriksson, P.O. Dovner, G.D. Reeves, R.D. Belian, M. André, L.G. Blomberg, R.E. Erlandson, M.H. Boehm, A.T. Aikio, and I. Häggstöm, Near-earth substorm onset: A coordinated study, Geophys. Res. Lett., 21, 1875-1878, 1994.
  • Rasinkangas, R., K. Mursula, G. Kremser, H.J. Singer, B.J. Fraser, A. Korth, and W.J. Hughes, Simultaneous occurrence of Pc 5 and Pc 1 pulsations in the dawnside magnetosphere: CRRES observations. Solar wind sources of magnetospheric ultra-low-frequency waves, Editors: M.J. Engebretson, K. Takahashi and M. Scholer, AGU Geophys. Monogr., 81, 417-424, 1994.
  • Roldugin, V.K., E.V. Vashenyuk, H. Kananen, and K. Kudela, Statistical characteristics of the signals from ground based cosmic rays at the stations Apatity, Oulu, and Lomninsky Peak. Geomagn. Aeron., 34, 176-180 (English translation); (in Russian, 34, 62-67, 1994).


  • Aikio, A.T., H.J. Opgenoorth, M.A.L. Persson, and K.U. Kaila, Ground-based measurements of an arc-associated electric field, J. atmos. terr. Phys., 55, No. 4/5, 797-808, 1993.
  • Chernyakov, S. M., E. D. Tereshchenko, B.E. Brunelli, and T. Nygrén, Comparison of ionospheric total electron content measured using the difference Doppler and incoherent scatter methods, Ann. Geophys., 11,10-16, 1993.
  • Cornilleau-Wehrlin, N., J. Solomon, A. Korth, and G. Kremser, Generation mechanism of plasmaspheric ELF/VLF hiss: A statistical study from GEOS 1 data, J. Geophys. Res., 98, 21,471-21,479, 1993.
  • Kaila, K.U., R. Rasinkangas, and J. Kangas, Photometric calibration of auroral TV pictures during a pulsating patch event. Ann. Geophys., 11, 790-796, 1993.
  • Koskinen, H.E.J., R.E. Lopez, R.J. Pellinen, T.I. Pulkkinen, D.N. Baker, and T. Bösinger, Pseudobreakup and substorm growth phase in the ionosphere and magnetosphere. J. Geophys. Res., 98, 5801-5813, 1993.
  • Kremser, G., Instruments for the measurement of charged particles in space, Arkhimedes, 45, No. 3, 241-257, 1993.
  • Kremser, G., Instruments for the measurement of magnetic and electric fields in space. Arkhimedes, 45, No. 3, 258-274, 1993.
  • Kremser, G., Spacecraft as carriers of scientific instruments in space, Arkhimedes, 45, 275-292, 1993.
  • Kremser, G., B. Wilken, G. Gloeckler, D.C. Hamilton, F.M. Ipavich, L.M. Kistler, and P. Tanskanen, Origin, transport, and losses of energetic He+ and He++ ions in the magnetosphere of the Earth: AMPTE/CCE observation,. Ann. Geophys., 11, 354-365, 1993.
  • Lanchester, B.S., T. Nygrén, M.J. Jarvis, and R. Edwards, Gravity wave parameters measured with EISCAT and Dynasonde, Ann. Geophys., 11, 925-936, 1993.
  • Lopez, R. E., H. E. J. Koskinen, T. I. Pulkkinen, T. Bösinger, R.W. McEntire, and T.A. Potemra, Simultaneous observation of the poleward expansion of substorm electrojet activity and the tailward expansion of current sheet disruption in the near-Earth magnetotail, J. Geophys. Res., 98, 9285-9295, 1993.
  • Perraut, S., A. Morane, A. Roux, A. Pedersen, R. Schmidt, A. Korth, G. Kremser, B. Aparicio, and R. Pellinen, Characterization of small scale turbulence observed at substorm onsets: Relationships with parallel acceleration of particles, Adv. Space Res., 13, No. 4, 217-222, 1993.
  • Roldugin, V.K., E.V. Vashenyuk, and H. Kananen, Coincidence of solar cosmic ray increase at close neutron-monitor stations in Apatity and Oulu, Geomagn. Aeron., 33, 105-107, 1993 (in English); (in Russian, 33, 134-136, 1993.)
  • Sergeev, V.A., and T. Bösinger, Particle dispersion at the nightside boundary of the polar cap, J. Geophys. Res., 98, 233-241, 1993.
  • Sergeev, V.A., M. Malkov, and K. Mursula, Testing the isotropic boundary algorithm method to evaluate the magnetic field configuration in the tail. J. geophys. Res., 98, 7609-7620, 1993.
  • Turunen, T., T. Nygrén, and A. Huuskonen, Nocturnal high-latitude E-region in winter during extremely quiet conditions. J. atmos. terr. Phys., 55, 783-795, 1993.
  • Ullaland, S., G. Kremser, P. Tanskanen, A. Korth, A. Roux, K.Torkar, L.P. Block, and I.B. Iversen, On the development of a magnetospheric substorm influenced by a storm sudden commencement: Ground, balloon and satellite observations, J. Geophys. Res., 98, 15381-15401, 1993.
  • Vilppola, J., J. Keisala, P. Tanskanen, and H. Huomo, Optimization of hemispherical electrostatic analyzer manufacturing with respect to resolution requirements, Rev. Sci. Instrum., 64, 2190-2194, 1993.
  • Vogelsang, H., H. Lühr, H. Voelker, J. Woch, T. Bösinger, T.A. Potemra, and P.-A. Lindqvist, An ionospheric travelling convection vortex event observed by ground-based magnetometers and by Viking, Geophys. Res. Lett., 20, 2343-2346, 1993.


  • Borovkova, O.K., O.V. Bolshakova, L.T. Afanasyeva, N.G. Kleimenova, J. Kangas, and T. Pikkarainen, On different sources of morning and daytime Pi1C pulsations, Geomagn. Aeron., 32, No. 4, 493-496, 1992.
  • Korth, A., G. Kremser, B. Wilkenm W. Güttler, S.L. Ullaland, and R. Koga, Electron and proton wide-angle spectrometer (EPAS) on the CRRES spacecraft, Journal of Spacecraft and Rockets, 29, 609-614, 1992.
  • Maalampi, J., K. Mursula and R. Vuopionperä, Heavy neutrinos in e+e- -collisions, Nucl. Phys. B, 372, 23-43, 1992.
  • Nygrén, T., K.U. Kaila, A. Huuskonen, and T. Turunen, Determination of E region effective recombination coefficient using impulsive precipitation event,. Geophys. Res. Lett., 19, 445-448, 1992.
  • Nygrén, T., A. Huuskonen, B.S. Lanchester, and H. Rishbeth, Observations of tides and gravity waves in the lower thermosphere at 70o N, Adv. Space Res., 12, (10)107-(10)110, 1992.
  • Pu, Z.Y., A. Korth, and G. Kremser, Plasma and magnetic field parameters at substorm onsets derived from GEOS 2 observations, J. Geophys. Res., 97, 19,342-19,349, 1992.
  • Sergeev, V. A., T. Bösinger, R. D. Belian, G. D. Reeves, and T. E. Cayton, Drifting holes in the energetic electron flux at geosynchronous orbit following substorm onset, J. Geophys. Res., 97, 6541-6548, 1992.


  • Collis, P.N., I. Häggstöm, K. Kaila, and M.T. Rietveld, EISCAT radar observations of enhanced incoherent scatter spectra; Their relation to red aurora and field-aligned currents. Geophys. Res. Lett., 18, 1031-1034, 1991.
  • Daglis, I. A., E. T. Sarris, and G. Kremser, Ionospheric contribution to the cross-tail current enhancement during the substorm growth phase, J. atmos. terr. Phys., 53, 1091-1098, 1991.
  • Daglis, I. A., E. T. Sarris, W. I. Axford, G. Kremser, B. Wilken, and G. Gloeckler, Statistical features of the substorm expansion phase as observed by the AMPTE/CCE spacecraft. In: Magnetospheric substorms, Editors: J.R. Kan, T.A. Potemra, S. Kokubun, and T. Iijima, AGU Geophys. Monogr. 64, 323-332, 1991.
  • Hansen, G., U.-P. Hoppe, E. Turunen, and P. Pollari, Comparison of observed and calculated incoherent scatter spectra from the D region. Radio Science, 26, 1153-1164, 1991.
  • Huuskonen, A., T. S. Virdi, G. O. L. Jones, and P. J. S. Williams, Observations of day-to-day variability in the meridional semi-diurnal tide at 70o N. Ann. Geophys., 9, 407-415, 1991.
  • Kleimenova, N. G., L. T. Afanasieva, O.V. Kozyreva, J. Kangas, T. Pikkarainen, H. Ranta, A. Ranta, and N. V. Shulzina, Pi1C geomagnetic pulsations in the region of eastward electrojet , Geomagn. Aeron. (in English), 31, 801-804, 1991.
  • Korth, A., Z.Y. Pu, G. Kremser, and A. Roux, A statistical study of substorm onset conditions at geostationary orbit. In: Magnetospheric substorms, Editors: J.R. Kan, T.A. Potemra, S. Kokubun, and T. Iijima, AGU Geophys. Monogr. 64, 343-351, 1991.
  • Kremser, G., Earth, Uranus and Neptune: A comparison of their magnetospheres. Arkhimedes, 43, 61-75, 1991.
  • Lanchester, B.S., T. Nygrén, A. Huuskonen, T. Turunen, and M. J. Jarvis, Sporadic-E as a tracer for atmospheric waves. Planet. Space Sci., 39, 1421-1434, 1991.
  • McCrea, I. W., K. Schlegel, T. Nygrén, and T. B. Jones, COSCAT, a new auroral radar facility on 930 MHz -system description and first results. Ann. Geophys., 9, 461-469, 1991.
  • Mursula, K., J. Kangas, T. Pikkarainen and M. Kivinen, Pc 1 micropulsations at a high-latitude station: A study over nearly four solar cycles. J. Geophys. Res., 96, 17651-17661, 1991.
  • Nekrasov, A.K., K. Mursula, J. Kangas, T. Pikkarainen, and N. F. Maltseva, Inhomogeneity and nonlinearity effects on stop bands of Alfvénic ion cyclotron waves in multicomponent plasma. J. Geophys. Res., 96, 1767-1773, 1991.
  • Nekrasov, A. K., F.Z. Feygin, J. Kangas, K. Mursula, and T. Pikkarainen, Influence of the ionosphere on the spectral structure of Pc1 geomagnetic pulsations. Geomagn. Aeron., 31 (in English), 489-491, 1991.  (in Russian: On the ionospheric influence upon the spectral structure of the Pc1 geomagnetic pulsations. Geomagn. Aeron., 31, 607-609, 1991.)
  • Rasinkangas, R., G. Kremser, B. Wilken, and F. Søraas, Substorm related energy-latitude dispersion of energetic ions in the dayside magnetosphere: VIKING observations. Ann. Geophys., 9, 628-639, 1991.
  • Roux, A., S. Perraut, P. Robert, A. Morane, A. Pedersen, A. Korth, G. Kremser, B. Aparicio, D. Rodgers, and R. Pellinen, Plasmasheet instability related to the westward travelling surge. J. Geophys. Res., 96, 17,697-17,714, 1991.
  • Roux, A., S. Perraut, A. Morane, P. Robert, A. Korth, G. Kremser, A. Pedersen, R. Pellinen, and Z.Y. Pu, Role of the near Earth plasmasheet at substorms. In: Magnetospheric substorms, Editors: J.R. Kan, T.A. Potemra, S. Kokubun, and T. Iijima, AGU Geophys. Monogr. 64, 201-214, 1991.


  • Daglis, I.A., E.T. Sarris, and G. Kremser, Indications for ionospheric participation in the substorm process from AMPTE/CCE observations. Geophys. Res. Lett., 17, 57-60, 1990.
  • Eastman, T.E., E.A. Greene, S.P. Christon, G. Gloeckler, D.C. Hamilton, F.M. Ipavich, G. Kremser, and B. Wilken, Ion composition in and near the frontside boundary layer. Geophys. Res. Lett., 17, 2031--2034, 1990.
  • Huuskonen, A., and T. Turunen: Observations of D- and E-region stratifications with incoherent scatter radar, Adv. Space Res., 10, (10)93-(10)100, 1990.
  • Kremser, G., and R. Lundin, Average energetic particle distributions in the midlatitude cusp/cleft region observed with VIKING. J. Geophys. Res., 95, 5753-5766, 1990.
  • Kustov, A., M. Uspensky, A. Huuskonen, J. Kangas, E. Nielsen, and B. Fejer, Altitudinal signal collection and the auroral radar backscatter irregularity velocity, Geomagn. Aeron., 30, 457-462, 1990.
  • Nygrén, T., Vertical plasma transport due to electric fields and neutral winds in the auroral ionosphere, Adv. Space Res., 10, (6)297-(6)305, 1990.
  • Nygrén, T., B.S. Lanchester, A. Huuskonen, L. Jalonen, T. Turunen, H. Rishbeth, and A.P. van Eyken, Interference of tidal and gravity waves in the ionosphere and an associated sporadic E-layer, J. Atmos. Terr. Phys., 52, 609-623, 1990.
  • Sergeev, V. A., O. A. Aulamo, R. J. Pellinen, M. K. Vallinkoski, T. Bösinger, C.A. Cattell, R.C. Elphic, and D.J. Williams, Non-substorm transient injection events in the ionosphere and magnetosphere, Planet. Space Sci., 38, 231-239, 1990.
  • Sergeev, V. A., P. Tanskanen, K. Mursula, A. Korth, and R. C. Elphic, Current sheet thickness in the near-Earth plasma sheet during substorm growth phase, J. Geophys. Res., 95, 3819-3828, 1990.
  • Woch, J., G. Kremser, and A. Korth, A comprehensive investigation of compressional ULF waves observed in the ring current, J. Geophys. Res., 95, 15,113-15,132, 1990.
  • Yahnin, A. G., T. Bösinger, J. Kangas, and R.D. Belian, Some implications on substorm dynamics inferred from correlations between multiple flux peaks of drifting high energy proton clouds and ground observations, Ann. Geophys., 8, 327-336, 1990.


  • Bösinger, T., On the spectral index of the Pi1B power spectrum, Ann. Geophys., 7, 375-386, 1989.
  • Eronen, T., E. Riihonen, J. Torsti, E. Valtonen, H. Kananen, E. Vainikka, H. Arvela, A.-M. Elo, and J. Peltonen, Search of periodic scintillations in cosmic radiation in the range 2-50 mHz, Adv. Space Res., 9, (4)229-(4)232, 1989.
  • Foster, J.C., T. Turunen, P. Pollari, H. Kohl, and V.B. Wickwar, Multiradar mapping of auroral convection, Adv. Space Res., 9, (5)19-(5)27, 1989.
  • Huuskonen, A., High resolution observations of the collision frequency and temperatures with the EISCAT UHF radar, Planet. Space Sci., 37, 211-221, 1989.
  • Kaila, K.U., Determination of the energy of auroral electrons by the measurements of the emission ratio and altitude of aurorae, Planet. Space Sci., 37, 341-349, 1989.
  • Kaila, K.U., and R. A. Rasinkangas, Coordinated photometer and incoherent scatter radar measurement of pulsating arcs with high time resolution, Planet. Space Sci., 37, 545-553, 1989.
  • Kaila, K., R. Rasinkangas, P. Pollari, R. Kuula, J. Kangas, T. Turunen and T. Bösinger, High resolution measurements of pulsating aurora by EISCAT, optical instruments and pulsation magnetometers, Adv. Space Res., 9, (5)53-(5)56, 1989.
  • Kustov, A., M. Uspensky, J. Kangas, A. Huuskonen, and E. Nielsen, On the threshold electric field for the ~1-m auroral irregularity appearance, J. Geophys. Res., 94, 12043-12048, 1989.
  • Lanchester, B.S., H. Rishbeth, T. Nygrén, L. Jalonen, and T. Turunen, Wave activity, F1-layer disturbance and a sporadic E-layer over EISCAT, J. Atmos. Terr. Phys., 51, 179-196, 1989.
  • Maltseva, N., J. Kangas, and T. Pikkarainen, On the relationship between IPDP wave events in the magnetosphere and solar wind activity during solar cycle (in Russian), Geomagn. Aeron., 29, 246-252, 1989.
  • Maltseva, N., J. Kangas, and T. Pikkarainen, Some aspects of the coupling between intervals of oscillations of decreasing period (ODP) and solar activity, Geomagn. Aeron., 29, 217-222, 1989.
  • Nygrén, T., B.S. Lanchester, L. Jalonen, and A. Huuskonen, A method for determining ion-neutral collision frequency using radar measurements of ion velocity in two directions, Planet. Space Sci., 37, 493-502, 1989.
  • Nygrén, T., Studies of sporadic E-layer using the EISCAT incoherent scatter radar, Adv. Space Res., 9, (5)73-(5)81, 1989.
  • Opgenoorth, H. J., B. Bromage, D. Fontaine, C. LaHoz, A. Huuskonen, H. Kohl, U.P. Lovhaug, G. Wannberg, G. Gustafsson, J.S. Murphree, L. Eliasson, G. Marklund, T. A. Potemra, S. Kirkwood, E. Nielsen, and J.-E. Wahlund, Coordinated observations with EISCAT and VIKING satellite - The decay of westward travelling surge, Ann. Geophys., 7, 479-500, 1989.
  • Pollari, P., A. Huuskonen, E. Turunen, and T. Turunen, Range ambiguity effects in a phase coded D-region incoherent scatter radar experiment, J. Atmos. Terr. Phys., 51, 937-945, 1989.
  • Rasinkangas, R., K. Kaila and T. Turunen, Comparison of the lower border of aurorae determined by two optical emission ratio models, Planet. Space Sci., 37, 1117-1126, 1989.
  • Uspensky, M.V., A.V. Kustov, P.J.S. Williams, A. Huuskonen, J. Kangas, and E. Nielsen, Effect of unresolved electrojet microstructure on measurements of irregularity drift velocity in auroral radar backscatter, Adv. Space Res., 9, (5)119-(5)122, 1989.


  • Huuskonen, A., P. Pollari, T. Nygrén, and M. Lehtinen, Range ambiguity effects in Barker-coded multipulse experiments with incoherent scatter radars, J. Atmos. Terr. Phys., 50, 265-276, 1988.
  • Huuskonen, A., T. Nygrén, L. Jalonen, N. Bjørnå, T.L. Hansen, A. Brekke, and T. Turunen, Ion composition in sporadic E layers measured by the EISCAT UHF radar, J. Geophys. Res., 93, 14603-14610, 1988.
  • Kangas, J., A. Aikio, and T. Pikkarainen, Radar electric field measurements during an IPDP plasma wave event, Planet. Space Sci., 36, 1103-1109, 1988.
  • Kremser, G., A. Korth. S.L. Ullaland, S. Perraut, A. Roux, A. Pedersen, R. Schmidt, and P. Tanskanen, Field-aligned beams of energetic electrons (16 keV < = E < = 80 keV) observed at geosynchronous orbit at substorm onsets, J. Geophys. Res., 93, 14453-14464, 1988.
  • Maltseva, N., J. Kangas, T. Pikkarainen, and J. Olson, Solar cycle effects in Intervals of Pulsations of Diminishing Periods pulsation activity, J. Geophys. Res., 93, 5937-5941, 1988.
  • Nielsen, E., M. Uspensky, A. Kustov, A. Huuskonen, and J. Kangas, On the dependence of Farley-Buneman turbulence level on ionospheric electric field, J. Atmos. Terr. Phys., 50, 600-605, 1988.
  • Rothwell, P.L., M.B. Silevitch, L.P. Block, and P. Tanskanen, A model of the westward traveling surge and the generation of Pi2 Pulsations, J. Geophys. Res., 93, 8613-8624, 1988.
  • Scheck, F. and K. Mursula, Note on muon decay parameters, Phys. Lett. B204, 154-155, 1988.
  • Sergeev, V.A., P. Tanskanen, K. Mursula, A. Korth, and R.C. Elphic, Current sheet thickness in the near-Earth plasma sheet during substorm growth phase as inferred from simultaneous magnetotail and ground-based observations, Adv. Space Res., 8, (9)125-(9)128, 1988.
  • Sharber, J.R., J.D. Menietti, H.K. Wong, J.L. Burch, D.A. Gurnett, J.D. Winningham, and P. Tanskanen, Plasma waves associated with diffuse auroral electrons at mid-altitudes, Adv. Space Res., 8, (9)447-(9)452, 1988.
  • Turunen, T., T. Nygrén, A. Huuskonen, and L. Jalonen, Incoherent scatter studies of sporadic-E using 300 m resolution, J. Atmos. Terr. Phys., 50, 277-287, 1988.
  • Uspensky, M., A. Kustov, E. Nielsen, A. Huuskonen, and J. Kangas, Electron density estimations in the auroral E region using STARE radar, Geomagn. Aeron., 28, 688-691, 1988.


  • Bösinger, T., and A.G. Yahnin, Pi1B type magnetic pulsations as a high time resolution monitor of substorm development, Ann. Geoph., A5, 231-238, 1987.
  • Bösinger, T., and U. Wedeken, Pi1B type magnetic pulsations simultaneously observed at mid and high latitudes, J. Atmos. Terr. Phys., 49, 573-598, 1987.
  • Huuskonen, A., J. Kangas, and T. Turunen, EISCAT as a radar for auroral research - a case study, Geophysica, 23, 35-46, 1987.
  • Kaila, K., An iterative method for calculating the altitudes and positions of auroras along the arc, Planet. Space Sci., 35, 245-258, 1987.
  • Kangas, J., T. Pikkarainen, and J.V. Olson, Simultaneous observations of IPDP type wave events in the evening and morning hours. Planet. Space Sci., 35, 827-832, 1987.
  • Kudo, S., M. Wada, P. Tanskanen, and M. Kodoma, Local time and cutoff rigidity dependences of storm time increase associated with geomagnetic storms, J. Geophys. Res., 92, 4719-4724, 1987.
  • Nygrén, T., L. Jalonen, and A. Huuskonen, A new method of measuring the ion-neutral collision frequency using incoherent scatter radar, Planet. Space Sci., 35, 337-343, 1987.
  • Pikkarainen, T., Statistical results of IPDP pulsations recorded in Finland during 1975 - 1979, Geophysica, 23, 1-19, 1987.
  • Tanskanen, P., J. Kangas, L. Block, G. Kremser, A. Korth, J. Woch, I.B. Iversen, K.M. Torkar, W. Riedler, S. Ullaland, J. Stadsnes, and K.H. Glassmeier, Different phases of a magnetospheric substorm on June 23, 1979, J. Geophys. Res., 92, 7443-7457, 1987.
  • Torkar, K.M., W. Riedler, G. Kremser, A. Korth, S. Ullaland, J. Stadsnes, L.P. Block, I.B. Iversen, P. Tanskanen, J. Kangas, N. Cornilleau -Wehrlin, and J. Solomon, A study of the interaction of VLF waves with equatorial electrons and its relationship to auroral X-rays in the morning sector, Planet. Space Sci., 35, 10, 1231-1253, 1987.


  • Huuskonen, A., T. Nygrén, L. Jalonen, T. Turunen and J. Silen, High resolution EISCAT observations of the ion-neutral collision frequency in the lower E-region, J. Atmos. Terr. Phys., 48, 827-836, 1986.
  • Kangas, J., A. Aikio, and J. V. Olson, Multistation correlation of ULF pulsation spectra associated with sudden impulses, Planet. Space Sci., 34, 543-553, 1986.
  • Kleimenova, N. G., L. F. Afanasieva, O. M. Raspopov, J. Kangas, T. Pikkarainen, H. Ranta, and A. Ranta, Day-time geomagnetic Pi1 pulsations and polar cusp, Geomagn. Aeron., 26, 621-625, 1986.
  • Kremser, G., A. Korth, S. Ullaland, J. Stadsnes, W. Baumjohann, L. Block, K.M. Torkar, W. Riedler, B. Aparicio, P. Tanskanen, I.B. Iversen, N. Cornilleau-Wehrlin, J. Solomon, and E. Amata, Energetic electron precipitation during a magnetoshperic substorm and its relationship to wave particle interaction, J. Geophys. Res. 91, 5711, 1986.
  • Lehtinen, M. and A. Huuskonen, The use of multipulse zero lag data to improve incoherent scatter radar power profile accuracy, J. atmos. terr. Phys., 48, 787. 1986.
  • Pikkarainen, T., J. Kangas, H. Ranta, A. Ranta, N. Maltseva, V. Troitskaya and L. Afanasieva, Riometer absorption events in the evening-to-afternoon sector of the auroral and sub-auroral zone and movements of the IPDP source, J. Atmos. Terr. Phys., 48, 585-596, 1986.
  • Sergeev, V.A., T. Bösinger, and A.T.Y. Lui, Impulsive processes in the magnetotail during substorm expansion, J. Geophys., 60, 175, 1986.
  • Sergeev, V.A., R.J. Pellinen, T. Bösinger, W. Baumjohann, P. Stauning, and A.T.Y. Lui, Spatial and temporal characteristics of impulsive structure of magnetospheric substorm, J. Geophys., 60, 186, 1986.


  • Chernouss, S. A., V. R. Tagirov, M. A. Chernouss, J. Kangas, J. Leinonen, and M. Kivinen, Auroral and magnetic pulsations in the morning sector of the auroral zone, Geophysica, 21, 19-37, 1985.
  • Kiselev, V., A. Koslovski, and J. Kangas, IPDP type pulsations and the development of disturbances in the evening sector of the magnetosphere, Geomagn. Aeron., 25, 874-876, 1985.
  • Lazutin, L. L., W. Baumjohann, K.-H. Glassmeier, G. Gustafsson, J. Kangas, T. V. Kozelova, A. Korth, G. Kremser, A. Khrushchinsky, A. Melnikov, A. Pedersen, R. Pellinen, W. Riedler, Ya. Sakharov, K. Torkar, and J.-P. Treilhou, SAMBO-GEOS: On three-dimensional substorm dynamics - A case study for March 4 1979, Adv. Space Res., 5, 171-174, 1985.
  • Maltseva, N. F., L. T. Afanasieva, V. A. Troitskaya, T. Pikkarainen, H. Ranta, A. Ranta, and J. Kangas, On the radial displacement of sources of OPDP (oscillations of decreasing period) and localized outpourings of high-energy electrons, Geomagn. Aeron., 25, 359-, 1985.
  • Turunen T., J. Silén, T. Nygrén, and L. Jalonen, Observation of a thin Es-layer by the EISCAT radar, Planet. Space Sci. 33, 1407, 1985.


  • Huuskonen, A., T. Nygrén, L. Jalonen, and J. Oksman, The effect of electric field-induced vertical convection on the precipitation E-layer, J. atmos. terr. Phys., 46, 927, 1984.
  • Iversen, I.B., L.P. Block, K. Brönstad, R. Grard, G. Haerendel, H. Junginger, A. Korth, G. Kremser, M. Madsen, J. Niskanen, W. Riedler, P. Tanskanen, K.M. Torkar and S. Ullaland, Simultaneous observations of a pulsation event from the ground, with balloons and with a geostationary satellite on August 12, 1978, J. Geophys. Res., 89, 6775, 1984.
  • Jalonen, L., T. Nygrén, J. Oksman and T. Turunen, On the current-carrying properties of mid-latitude type sporadic E-layers, J. Atmos. Terr. Phys. 46, 383-387, 1984.
  • Nygrén, T., L. Jalonen, J. Oksman and T. Turunen, The role of electric field and neutral wind direction in the formation of sporadic E-layers, J. Atmos. Terr. Phys. 46, 373-381, 1984.
  • Nygrén, T., L. Jalonen, A. Huuskonen and T. Turunen, Density profiles of sporadic E-layers containing two metal ion species, J. Atmos. Terr. Phys, 46, 885-893, 1984.


  • Leinonen, J., J. Kangas, A.V. Kustov, G.S. Stepanov, and M.V. Uspensky, PiC magnetic pulsations and variations of the ionospheric electric field and conductivity, J. atmos. terr. Phys., 45, 579, 1983.
  • Opgenoorth, H.J., J. Oksman, K.U. Kaila, E. Nielsen, and W. Baumjohann, Characteristics of eastward drifting omega bands in the morning sector of the auroral oval, J. geophys. Res., 88, 9171, 1983.
  • Pikkarainen, T., J. Kangas, B. Kiselev, N. Maltseva, R. Rakhmatulin, and S. Solovjev, Type IPDP magnetic pulsations and the development of their sources, J. Geophys. Res., 88, 6204, 1983.
  • Uspensky, M.V., R.J. Pellinen, W. Baumjohann, G.V. Starkov, E. Nielsen, G. Sofko, and K.U. Kaila, Spatial variations of ionospheric conductivity and radar auroral amplitude in the eastward electrojet region during pre-substorm conditions, J. Geophys., 52, 40, 1983.
  • Yahnin, A., V. A. Sergeev, R. J. Pellinen, W. Baumjohann, K. U. Kaila, H. Ranta, J. Kangas and O.M. Raspopov, Substorm time sequence and microstructure on 11 November, 1976, J. Geophys, 53, 182-197, 1983


  • Jalonen, L., T. Nygrén and T. Turunen, On the partial transparencyof sporadic E-layers at high latitudes, J. Atmos. Terr. Phys. 44, 731-735, 1982.
  • Jalonen, L., T. Nygrén and T. Turunen, Generation of ionospheric z-echoes via mode coupling in the E-region, Geophysica, 19:1, 65-74, 1982.
  • Kremser, G., J. Bjordal, L.P. Block, K. Branstad, M. H?v?g, I.B Iversen, J. Kangas, A. Korth, M.M. Madsen, J. Niskanen, W. Riedler, J. Stadsnes, P. Tanskanen, K.M. Torkar, and S.L. Ullaland, Coordinated balloon-satellite observations of energetic particles at the onset of magnetospheric substorm, J. Geophys. Res., 87, 4445, 1982.
  • Nygrén, T., A method of full wave analysis with improved stability, Planet. Space Sci., 40, 427, 1982.
  • Nygrén, T. and J. Silén, A.E. Nordenskd and the auroral oval, EOS Trans., 63, 553, 1982.
  • Swinson, D.P. and H. Kananen, Reversal of the cosmic ray density gradient perpendicular to the ecliptic plane, J. Geophys. Res., 87, 1685, 1982.


  • Baransky, L., Yu. Golikov, F. Feygin, I. Harchenko, J. Kangas, and T. Pikkarainen, Role of the plasmapause and ionosphere in the generation and propagation of pearl pulsations, J. atmos. terr. Phys., 43, 875, 1981.
  • Bösinger, T., K. Alanko, J. Kangas, H. Opgenoorth, and W. Baumjohann, Correlation between PiB type magnetic pulsations, auroras and equivalent current structures during 2 isolated substorm, J. atmos. terr. Phys., 43, 933, 1981.
  • Jalonen, L., Quasi-periodic frequency dependence of Es- and E-layer echo amplitudes caused by mode coupling, J. atmos. terr. Phys., 43, 1285, 1981.
  • Jalonen, L., T. Nygrén and T. Turunen, Properties of ionospheric gyroechoes in the presence of a sporadic E-layer, J. Atmos. Terr. Phys., 43, 1065-1069, 1981.
  • Kremser, G., J. Bjordal, L.P. Block, K. Bränstad, I.B. Iversen, J. Kangas, A. Korth, M.M. Madsen, T. Moe, W. Riedler, K.M. Torkar, J. Stadsnes, P. Tanskanen, and S.L. Ullaland, On the origin of electron precipitation in the Auroral zone related to the onset of magnetospheric substorms, Avd. Space Res., 1, 279, 1981.
  • Kustov, A.V., A.I. Pudovkin, O.M. Raspopov, J. Kangas, and J. Leinonen, Exitation of radioauroral pulsations and penetration of PiC waves through the ionosphere, J. atmos. terr. Phys., 43, 975, 1981.
  • Maltseva, N., V. Troitskaya, E. Gerazimovitsh, L. Baransky, S. ?sheim, J. Holtet, A. Egeland, K. Aasen, and J. Kangas, On temporal and spatial development of IPDP source region, J. atmos. terr. Phys., 43, 1175, 1981.
  • Nygrén, T., L. Jalonen and T. Turunen, Anomalous multiple traces below foE in high gain ionograms recorded at Sodankylä, J. Atmos. Terr. Phys., 43, 151-156, 1981.
  • Nygrén, T., A simple method for obtaining the reflection and transmission coefficients and fields for an electromagnetic wave in a horizontally stratified ionosphere, Planet. Space Sci., 29, 521, 1981.
  • Tanskanen, P., D.A. Hardy, and W.J. Burke, Spectral characteristics of precipitating electrons associated with visible aurora in the premidnight oval during periods of substorm activity, J. Geophys. Res., 86, 1379, 1981.
  • Ullaland, S., J. Bjordal, L.P. Block, K. Bränstad, I.B. Iversen, J. Kangas, A. Korth, G. Kremser, M.M. Madsen, T. Moe, W. Riedler, J. Stadsnes, P. Tanskanen, and K.M. Torkar, Triggering of a magnetospheric substorm by a sudden commencement of a geomagnetic storm observed by the x-ray experiments of SBARMO--79 and the charged particle spectrometer on GEOS-2, Adv. Space Res., 1, 273, 1981.


  • Novikov, Yu.P., Yu.A. Kopytenko, O.M. Raspopov, T. Bösinger, J. Kangas and H. Ranta, Simultanous maxima of geomagnetic pulsations and riometer absorption on the afternoon side of the auroral zone, J. Geophys., 48, 116-120, 1980.
  • Turunen, T., T. Nygrén and L. Jalonen, Observations of the reflection coefficient of the sporadic E-layer at high latitudes, J. Atmos. Terr. Phys, 42, 147-154, 1980.
  • Opgenoorth, H.J., R.T. Pellinen, M. Maurer, F. Küppers, W.J. Heikkila, K.U. Kaila, and P.J. Tanskanen, Ground-based observations of an onset of localized field-aligned currents during auroral break up around magnetic midnight, J. Geophys., 48, 101, 1980.
  • Turunen, T., T. Nygrén, and L. Jalonen, Observations of the reflection coefficient of the sporadic E-layer at high latitudes, J. atmos. terr. Phys., 42, 147, 1980.


  • Horita, R.E., J.N. Barfield, R.R. Heacock, and J. Kangas, IPDP source regions and resonant proton energies, J. atmos. terr. Phys., 41, 293, 1979.
  • Jalonen, L. and T. Nygrén, On the discrepancy between the magnetic D-component and the overhead horizontal current at high latitudes, Planet.Space Sci., 27, 1027, 1979.
  • Kangas, J., T. Pikkarainen, Yu. Golikov, L. Baransky, V. Sterlikova., and V.A. Troitskaya, Bursts of irregular magnetic pulsations during the substorm, J. Geophys., 46, 237, 1979.


  • Nygrén, T., A synthesised trough ionogram, J. atmos. terr. Phys., 40, 1089, 1978.
  • Turunen, T. and T. Nygrén, Observation of gravity waves in the high latitude F-layer by using fixed frequency sounding, J. atmos. terr. Phys., 40, 1303. 1978.
  • Untiedt, J., R. Pellinen, F. Küppers, H. J. Opgenoorth, W.D. Pelster, W. Baumjohann, H. Ranta, J. Kangas, P. Czechowsky, and W.J. Heikkila, Obervations of the initial development of an auroral and magnetic substorm at magnetic midnight, J. Geophys., 45, 41, 1978.


  • Holtzworth, R.H., J.-J. Berthelier, D.K. Cullers, U.V. Fahleson, C.-G. Fäthammar, M.K. Hudson, L. Jalonen, M.C. Kelley, P.J. Kellogg, P. Tanskanen, M. Temerin, and F.S. Mozer, The large-scale ionospheric electric field: its variation with magnetic acitivity and relation to terrestrial kilometric radiation, J. Geophys. Res., 82, 19, 2735, 1977.
  • Lukkari, L., J. Kangas, and H. Ranta, Correlated electron precipitation and magnetic IPDP events near the plasmapause, J. Geophys. Res., 82, 4750, 1977.
  • Nygrén, T., Simulation of vertical incidence ionograms by ray tracing method in the presence of replacement layer and ionospheric trough, J. atmos. terr. Phys., 39, 733, 1977.


  • Kangas, J., L. Lukkari, and R.R. Heacock, Observations of evening magnetic pulsations in the auroral zone during the substorms, J. atmos. terr. Phys., 38, 1177, 1976.
  • Lukkari, L. and J. Kangas, Simultaneous ULF-wave and strong riometer absorption events at the plasmapause latitude in the afternoon sector, J. atmos. terr. Phys., 38, 1187, 1976.
  • Pytte, T., H. Trefall, G. Kremser, L. Jalonen, and W. Riedler, On the morphology of energetic (> 30 keV) electron precipitation during the growth phase of magnetospheric substorms, J. atmos. terr. Phys., 38, 739, 1976.


  • Blomster, K. and H. Kananen, Long term variation in the observed mean multiplicity in 9-NM-64 Oulu, Finland, Phys. Fenn., 10, 101, 1975.
  • Kangas, J., L. Lukkari, P. Tanskanen, H. Trefall, J. Stadsnes, G. Kremser, and W. Riedler, On the morphology of auroral-zone x-ray events - IV. Substorm-related electron precipitation in the local morning sector, J. atmos. terr. Phys., 37, 1289, 1975.
  • Lukkari, L., J. Kangas, and R.R. Heacock, Simultaneous observations of evening magnetic pulsations and morning electron precipitation events in the auroral-zone during the substorm, J. atmos. terr. Phys., 37, 1305, 1975.


  • Kangas, J., L. Lukkari, and R.R. Heacock, On the westward expansion of substorm-correlated particle phenomena, J. Geophys. Res., 79, 3207, 1974.
  • Kangas, J., P. Tanskanen, H. Trefall, J. Stadsnes, G. Kremser, and W. Riedler, Energy spectral variations during SVA precipitation events on the morning and day side of the auroral zone, J. atmos. terr. Phys., 36, 1269, 1974.


  • Kangas, J., and P. Raychaudhuri, Solar energy cycle and its relation to geomagnetic activity, Astrophys. Space Sci., 21?, 3-, 1973.
  • Kangas, J., and P. Raychaudhuri, Changes in solar rotation due to the solar energy cycle of 11 years, Astrophys. Space Sci., 21?, 123-, 1973.
  • Kremser, G., K. Wilhelm, W. Riedler, K. Branstad, H. Trefall, S.L. Ullaland, J.P. Legrand, J. Kangas and P. Tanskanen, On the morphology of auroral-zone x-ray events - II. Events during early morning hours, J. atmos. terr. Phys., 35, 713, 1973.
  • Maral, G., K. Branstad, H. Trefall, G. Kremser, H. Specht, P. Tanskanen, J. Kangas, W. Riedler, and J.P. Legrand, On the morphology of auroral-zone x-ray events - III. Largescale obervations in the midnight-to-morning sector, J. atmos. terr. Phys., 35, 735, 1973.
  • Nygrén, T., J. Niskanen, L. Lukkari, J. Kangas, M. Kivinen, and R.R. Heacock, Variations in the geomagnetic field and auroral zone x-ray intensity in the Pi1 period range, Geophysica, 13, 43, 1973.



  • Bjordal, J., H. Trefall, S. L. Ullaland, A. Bewersdorff, J. Kangas, P. Tanskanen, G. Kremser, K. H. Saeger and H. Specht, On the morphology of auroral-zone X-ray events 1. Dynamics of midnight events, J. Atm. Terr. Phys. 33, 605, 1971.


  • Ullaland, S.L., K. Wilhelm, J. Kangas, and W. Riedler, Electron precipitation associated with a sudden commencement of a geomagnetic storm, J. Atmos. Terr. Phys., 32, 1545-1553, 1970.


  • Heritchi, Dj., J. Kangas, G. Kremser, J.P. Legrand, P. Masse, M. Palous, G. Pfotzer, W. Riedler, and K. Wilhelm: Balloon measurements of solar protons in northern Scandinavia on July 7, 1966. Ann. IQSY, 3, 267-281. The M.I.T. Press, 1969.
  • Kangas, J., and P. Tanskanen, On the relationship between auroral-zone X-ray pulsations and development of the auroral electrojet, J. Atmos. Terr. Phys., 31, 597-600, 1969.


  • Kangas, J., Fast pulsations of auroral-zone X-ray intensity, Annales de Geophysicae 24, 147-152, 1968.
  • Kangas, J., Some characteristics of auroral-zone precipitations during a single long-lived balloon flight, Geophysica, 10, 109-119, 1968.
  • Tanskanen, P., Daily variations of cosmic rays during quiet and disturbed periods in 1965 and 1966, Can. J. Phys. 819, 1968.
  • Tanskanen, P., Influence of snow on Neutron Monitor intensity, Nature, 219, 5157, 1968.


  • Kangas, J., H. Kananen, and J. Kokkoniemi, On the variations of the cosmic ray l-meson intensity during rapid pressure and about the applicability of Duperier's model, Geophysica, 9:4, 321-325, 1967.
  • Kokkoniemi, J., H. Kananen, and J. Kangas, Some aspects on atmospheric effects of the cosmic ray l-meson intensity, Geophysica 9:4, 313-319, 1967.


In books

  • Bösinger T., J. LaBelle, R.A. Treumann: Earth´s interacting atmospheric and plasma envelopes: Conceptional Remarks. Teoksessa Dynamic Coupling Between Earth´s Atmospheric and Plasma Environments, toim. Bösinger T., J. LaBelle, H.J. Opgenoorth, J.-P. Pommereau, K. Shiokawa, S.C. Solomon, R.A Treumann, Space Science Series of ISSI, 11 pp, 2012 >>
  • Asikainen T.: Energetic Particles in the Cusp: A Cluster/RAPID view. Teoksessa The Cluster Active Archive: Studying the Earth, toim. H. Laakso, M. Taylor, and C.P. Escoubet, Astrophysics and Space Science Proceedings, ISBN: 978-90-481-3498-4 , 415-426, 2009 [10.1007/978-90-481-3499-1_29]
  • Asikainen, T., K. Mursula, R. Kerttula, R. Friedel, D. Baker, F. Søraas, J.F. Fennell and J.B. Blake: Global view of energetic particles during a major magnetic storm. Teoksessa The Inner Magnetosphere: Physics and Modelling, toim. T.I. Pulkkinen, N.A. Tsyganenko and R.H.W. Friedel, AGU Geophysical Monograph No. 155, 97-104, 2005


doctoral thesis

  • Pacini, Alessandra Abe (2015): Studying the heliospheric variability and atmospheric dynamics using cosmogenic tracers >>
  • Virtanen, Ilpo (2013): Asymmetry of the heliospheric magnetic field >>
  • Räihä, Tomi (2012): Analysis Tools for the EMMA Experiment >>
  • Yakovchouk, Olesya (2012): Measures and consequences of high solar activity >>
  • Zhang, Liyun (2012): Solar active longitudes and their rotation >>
  • Pitkänen, Timo (2011): Dynamics of the polar cap boundary and the auroral oval in the nightside ionosphere >>
  • Virtanen, Ilkka (2009): Multi-purpose methods for ionospheric radar measurements >>
  • Kero, Antti (2008): Ionospheric D-region studies by means of active heating experiments and modelling >>
  • Alanko-Huotari, Katja (2007): Models and applications of long-term heliospheric modulation of galactic cosmic rays >>
  • Hiltula, Teemu (2006): Hemispherical asymmetries in solar wind and heliospheric magnetic field
  • Martini, Daniel (2006): Centennial evolution of geomagnetic activity >>
  • Voiculescu, Mirela (2006): IMF effects on sporadic-E layers and F region trough
  • Asikainen, Timo (2005): Observations of energetic particles in terrestrial magnetosphere >>
  • Danielides, Michael (2005): Multi-instrumental auroral case studies at substorm conditions >>
  • Karinen, Arto (2005): Studies on global geomagnetic activity and magnetic storms
  • Manninen, Jyrki (2005): Some aspects of ELF-VLF emissions in geophysical research >>
  • Damtie, Baylie (2004): New incoherent scatter radar measurement techniques and data analysis methods >>
  • Kozlovsky, Alexander (2003): Structure and dynamics of the magnetosphere inferred from radar and optical observations at high latitudes
  • Vilppola, Jari (2003): Solar wind: Detection Methods and Long-Term Fluctuations >>
  • Kerttula, Raine (2001): Ground-based studies of Pc 1 waves
  • Bräysy, Timo (2000): Satellite observations of electromagnetic ion cyclotron waves
  • Ulich, Thomas (2000): Solar variability and long-term trends in the ionosphere
  • Usoskin, Ilya (2000): Solar activity changes and modulation of cosmic rays
  • Rasinkangas, Reijo (1997): Satellite observations of magnetospheric particles and waves
  • Zieger, Bertalan (1997): Long-term changes in the solar-terrestrial environment
  • Pollari, Päiviö (1996): Development of incoherent scatter modulation and data analysis methods
  • Aikio, Anita (1995): Studies on the electrodynamics of the auroral oval
  • Kaila, Kari (1990): The energy and energy distribution of auroral electrons
  • Bösinger, Tilmann (1989): On burst-like, short period geomagnetic pulsations during magnetosperic substorms
  • Pikkarainen, Tapani (1989): Characteristics, sources and generation mechanisms of type IPDP magnetic pulsations
  • Huuskonen, Asko (1988): High resolution studies of the lower E-region using the incoherent scatter method
  • Jalonen, Lasse (1982): Mode coupling phenomena in the high-frequency vertical soundings of the high-latitude ionosphere
  • Nygrén, Tuomo (1981): Investigations on the propagation of radio waves in the high- and mid-latitude ionosphere
  • Turunen, Tauno (1977): Properties of the sporadic E layer at Sodankylä
  • Kangas, Jorma (1970): On the morphology of auroral-zone electron precipitation
  • Niemi, Sauli P.A. (1966): Construction and use of a neutron monitor for multiplicity studies
  • Tanskanen, Pekka (1965): On the variation of cosmic ray meson intensity at sea level in connection with atmospheric disturbances


licentiate´s thesis

  1. Vilppola, Jari (1998): Cassini mission and the CAPS/IBS instrument
  2. Oikarinen, Antti (1997): Ionosfäärin kuumennuskokeilla aikaansaadut VLF-aallot
  3. Bräysy, Timo (1996): The occurrence of electromagnetic ion cyclotron waves during geomagnetic storms
  4. Manninen, Jyrki (1995): VLF-aallot ja magneettiset häiriöt
  5. Aikio, Anita (1990): Mittauksia magnetosfäärin alimyrskyyn liittyvistä ionosfäärin sähködynaamisista parametreistä
  6. Kaila, Kari (1990): The energy and energy distribution of auroral electrons
  7. Rasinkangas, Reijo (1988): Optiset revontulisykkeet
  8. Huuskonen, Asko (1985): Revontulialueen E-kerros ja plasman vertikaalinen konvektio
  9. Leinonen, Jorma (1984): Geomagneettiset pulsaatiot ja ionosfääri
  10. Anttonen, Hannu (1982): Sähkökentän ja kenttävoimakkuusmittarin vuorovaikutus
  11. Niskanen, Juhani (1981): Revontulialueen röntgensäteilyn ja sähkökenttien luotain, EFAX-79
  12. Bösinger, Tilmann (1978): The application of a straight cylindrical wave quide model to the earth plasmasphere and to a laboratory device (Flask F1) for...
  13. Jalonen, Lasse (1978): Ionosfäärin sähkökentän palloluotauksiin liittyvistä virhetekijöistä
  14. Yliniemi, Jukka (1977): Riometri ja sen käyttö ionosfääriabsorptiomittauksissa
  15. Nygrén, Tuomo (1975): Radiosäteen eteneminen keskileveysasteiden ionosfäärissä
  16. Lukkari, Lauri (1974): Mikropulsaatiot ja magnetosfäärin alimyrskyt
  17. Turunen, Tauno (1972): Revontulialueen ionosfäärin E-kerroksen ilmiöistä
  18. Blomster, Kauko (1970): Multiplisiteettitutkimuksia neutronimonitorilla
  19. Kananen, Hannu (1969): I osa. Megamesoniteleskoopin suunnittelu ja rakentaminen sekä testaus
  20. Kokkoniemi, Juho (1969): II osa. Kosmisen säteilyn u-mesonien tutkimuksia Oulussa
  21. Kangas, Jorma (1967): Auroral X-rays measured by balloonborne detectors
  22. Tanskanen, Pekka (1964): Kuubinen standardimesoniteleskooppi


master´s thesis

  1. Kelloniemi, Enni (2014): Revontuliteorian perusteet ja yhdeksäsluokkalaisten käsityksiä revontulista
  2. Koskela, Jennimari (2014): Comparing the heliospheric magnetic field at the Earth′s orbit and the coronal base
  3. Leussu, Raisa (2014): The homogeneity of sunspot number series in the 19th century revisited using observations by Samuel Heinrich Schwabe
  4. Virtanen, Iiro (2014): Rotation of active longitudes of solar X-ray flares and sunspots
  5. Holappa, Lauri (2012): Spatial distribution of geomagnetic activity and its relation to solar wind
  6. Kantola, Perttu (2012): Atmospheric response to crossings of the heliospheric current sheet
  7. Kaaretkoski, Hannu (2011): Nopean aurinkotuulen vaikutukset ionosfäärissä
  8. Karppinen, Tomi (2010): Pc1-helmiäispulsaatioiden taajuusrakenteesta
  9. Sarriugarte Onandia, Paulo (2010): Variability in Solar Wind and Heliospheric Magnetic Field
  10. Satokangas, Pekka (2010): Typpimolekyylin N2 ja typpimolekyyli-ionin N2+ emissiot revontulissa
  11. Savela, Janne (2010): Koronan massapurkaukset ja niiden vaikutukset magnetosfäärissä
  12. Virtala, Jussi (2010): Aurinkotuulen nopeiden virtausten tietokonepohjainen tunnistaminen
  13. Alatalo, Ilkka (2009): Ukkonen
  14. Kalliomäki, Petri (2009): STEREO-satelliittien aurinkotuulimittauksia
  15. Maliniemi, Ville (2009): Magnetosfäärin virtajärjestelmät magneettisten myrskyjen aikana
  16. Forsén, Jenni (2008): Efektiivisen lämpötilan määrittäminen N2+rotaatiohienorakenteesta
  17. Hyvärinen, Salli (2008): Revontulifysiikan opettaminen peruskoulussa ja lukiossa
  18. Sariola, Antti (2008): Aurinkotuulen kvasi-invariantti
  19. Selkälä, Anne (2008): Calculations on Joule heating in the high-latitude ionosphere using EISCAT measurements
  20. Virtanen, Ilpo (2008): Heliospheric magnetic field
  21. Naatti, Taina (2007): Cassinin IBS-mittaukset Saturnuksen magnetosfäärissä
  22. Räihä, Tomi (2007): Simulation of high energy interactions of cosmic rays in the atmosphere (sivulaudatur)
  23. Mäyrä, Aki (2006): Time-frequency distribution of geomagnetic pulsations
  24. Niskanen, Heidi (2006): Temporal variations and rapid fluctuations in galactic cosmic rays
  25. Pesola, Antti (2006): Revontulispektrometrin kalibrointi ja ominaisuuksien määrittäminen
  26. Penttinen, Krista (2005): Pc1-pulsaatiot Cluster 2 -satelliittien mittauksissa
  27. Tenhunen, Ari (2005): Epälineaarinen aikasarja-analyysi
  28. Virtanen, Ilkka (2005): Satelliittitomografia ionosfääritutkimuksessa
  29. Asikainen, Timo (2004): Energetic particles in the high-latitude dayside magnetosphere >>
  30. Calzada Gil, Silvia (2004): Tools for Re-Entry Simulation and Landing Area for YES2
  31. Pitkänen, Timo (2004): Napakalotin reunan sijainnin määrittäminen yöpuolella EISCAT-tutkamittauksilla
  32. Uusimaa, Jouni (2004): Ionosfäärin Alfvén-resonaattori: Resonanssitaajuuden laskemisesta kansainvälistä referenssi-ionosfääriä (IRI) hyväksi käyttäen
  33. Alanko, Katja (2003): Galaktisten kosmisten säteiden modulaatio heliosfäärissä ja sen simulointi
  34. Hiltula, Teemu (2003): Long-Term Behaviour of the Solar Wind Speed and Temperature at 1 AU
  35. Huotari, Petri (2003): Ionosfäärin Alfvén-resonaattori ja spektriresonanssirakenteet korkeilla leveyspiireillä
  36. Niskala, Kai (2003): EMIC wave observations on Cluster and Polar satellites
  37. Jaakola, Ilari (2002): Valodiodin soveltuvuus revontulivalon mittaamiseen ja valodiodin virtasignaalin vahvistaminen
  38. Kekkonen, Petri (2002): Astrid-2 -satelliittiprojekti ja Langmuir-anturin virtapyyhkäisyt plasmaparametrien määrittämisessä
  39. Kontio, Jori (2001): Luonnon mittasuhteiden tutkimus pienestä suureen >>
  40. Lahtinen, Tero (2001): Napatuuli
  41. Karinen, Arto (2000): Periodicities in selected geomagnetic indices
  42. Karjalainen, Tuija (2000): Kosmisen säteilyn vuorokausivaihtelu
  43. Jussila, Jouni (1999): Revontulikuvadatan analysointimenetelmiä >>
  44. Lakkala, Timo (1999): Electric fields and currents in the vicinity of drifting quiet auroral arcs
  45. Lindman, Kimmo (1999): Interplanetaarisen magneettikentän pohjois-etelä-epäsymmetria
  46. Kero, Antti (1998): Ionosfäärin elektronilämpötilan mallintaminen kuumennuskokeessa
  47. Keränen, Salla (1998): Kosmisen säteilyn ilmastollisesta merkityksestä
  48. Mäkiniemi, Aki (1998): IPDP-pulsaatiohavaintoja Freja-satelliitilla
  49. Kivisaari, Tarmo (1997): Pc1-aaltojen automaattinen etsintä
  50. Koponen, Jukka (1997): Onko muilla planeetoilla revontulia?
  51. Kärjä, Anne (1997): SAR-kaaret
  52. Saviaro, Erkko (1996): Acoustic gravity waves in ionospheric F-region
  53. Ulich, Thomas (1996): The varying length of the solar cycle as determined by different methods
  54. Vilppola, Jari (1996): Diskreetti aallokemuunnos aikasarja-analyysissä
  55. Kerttula, Raine (1995): IPDP-pulsaation suhde alimyrskyn voimakkuuteen
  56. Manninen, Reijo (1995): Hapen 1S-tilan elinaika
  57. Matala-aho, Erkki (1994): Sähkömagneettisten aaltojen eteneminen monikomponenttisessa kylmässä plasmassa
  58. Pirttilä, Juha (1993): Rinnakkaislaskennan soveltamisesta reaaliaikaiseen sirontatutkadatan analyysiin
  59. Keskimölö, Vesa (1992): Magneettisen myrskyn synty
  60. Bräysy, Timo (1991): RAPID-hiukkasmittauslaitteen ionimassaspektrometrin lennonaikainen testiohjelmisto
  61. Manninen, Jyrki (1991): Magnetosfäärin vihellysilmiö
  62. Nieminen, Lea (1990): Ionisyklotroniaaltojen esiintyminen magneettisen myrskyn aikana
  63. Reinikainen, Arja (1990): Kosmisen säteilyn intensiteetin päivittäisen vaihtelun pitkäaikaiset muutokset - Oulun yliopiston havaintoaseman aineistoa vuosilta 1965-1987
  64. Ojanaho, Leena (1989): Revontulet ja maan magneettikentän vaihtelut
  65. Korhonen, Pekka (1988): Ionosfäärin F-kerroksen kuoppa
  66. Julkunen, Jukka Pekka (1987): Revontulet ja EISCAT
  67. Ylinen, Timo (1987): SSC ja siihen liittyvät magneettiset pulsaatiot
  68. Aikio, Anita (1986): Ionosfäärin vaikutukset megneettisiin pulsaatioihin
  69. Kangasniemi, Viljo (1986): Induktiomagnetometrien kalibrointi kelan ulkokentän avulla
  70. Herrala, Esko (1985): Revontulikuvauksen koejärjestelmä
  71. Jankkila, Eeva-Liisa (1985): Interplanetaarisen magneettikentän vaihteluiden vaikutus kosmiseen säteilyyn
  72. Taskinen, Juha (1985): Revontulipulsaatiot ja magneettiset pulsaatiot
  73. Jantunen, Heli (1984): Ionosfäärissä pystysuoraan etenevän radioaallon rajapolarisaatio
  74. Lehto, Raine (1984): Revontulien optiset havainnot
  75. Sirviö, Jarmo (1983): Revontulikaareen liittyvä 3-ulotteinen virtasysteemi itäisen suihkuvirtauksen alueessa
  76. Koskiniemi, Tapani (1982): Varattujen hiukkasten kiihdytys avaruudessa
  77. Huuskonen, Asko (1981): Aikasarjojen spektrianalyysistä
  78. Huttunen, Martti (1980): Lyhytjaksoiset magneettiset pulsaatiot magnetosfäärissä ja maan pinnalla
  79. Leinonen, Jorma (1980): Pc1 - pulsaatio ja sen polarisaatio
  80. Alanko, Kari (1979): Magnetosfäärin alimyrsky
  81. Takalo, Jouni (1979): Magnetosfäärimallit
  82. Kyrö, Esko (1974): Nukleaarisen geofysiikan menetelmiä
  83. Jalonen, Lasse (1972): Magnetosfäärin sähkökentistä ja niiden tutkimisesta
  84. Niskanen, Juhani (1972): Palloluotausmittausten analysointilaitteisto
  85. Nygrén, Tuomo (1971): Aurinkotuuli ja interplanetaarinen magneettikenttä
  86. Mähönen, Reino (1970): Kosmisen säteilyn laajojen kuurojen tutkiminen fuoresenssispektrometrin avulla
  87. Turunen, Tauno (1970): Satelliittien hiukkasdetektorit
  88. Rajala , Osmo (1968): Kosmisen säteilyn vuorokautinen vaihtelu
  89. Koivumaa, Seppo (1966): Kosmisen säteilyn kovan komponentin meteorologisista tekijöistä
  90. Ravola, Erkki (1966): Jatkuvasti rekisteröivät hiukkasilmaisimet ja niiden käyttö kosmisen säteilyn tutkimisessa
  91. Sahlström, Tapani (1966): Kosmisen säteilyn laajat kuurot
  92. Yliniemi, Jukka (1966): Aurinkotuulen ja maan magneettikentän vuorovaikutus


Last updated: 14.2.2017