Search Results - O. Amm

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  1. 1

    A new method to estimate ionospheric electric fields and currents using data from a local ground magnetometer network by H. Vanhamäki, O. Amm

    Published in Annales Geophysicae (2007-06-01)
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  2. 2

    Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm by T. Pitkänen, A. T. Aikio, A. Kozlovsky, O. Amm

    Published in Annales Geophysicae (2009-05-01)
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  3. 3

    Method to locate the polar cap boundary in the nightside ionosphere and application to a substorm event by A. T. Aikio, T. Pitkänen, A. Kozlovsky, A. Kozlovsky, O. Amm

    Published in Annales Geophysicae (2006-08-01)
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  4. 4

    EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere by T. Pitkänen, A. T. Aikio, O. Amm, K. Kauristie, H. Nilsson, K. U. Kaila

    Published in Annales Geophysicae (2011-02-01)
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  5. 5

    Comparison of the open-closed field line boundary location inferred using IMAGE-FUV SI12 images and EISCAT radar observations by B. Hubert, A. T. Aikio, O. Amm, T. Pitkänen, K. Kauristie, S. E. Milan, S. W. H. Cowley, J.-C. Gérard

    Published in Annales Geophysicae (2010-04-01)
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  6. 6

    Mesoscale ionospheric electrodynamics of omega bands determined from ground-based electromagnetic and satellite optical observations by O. Amm, A. Aksnes, J. Stadsnes, N. Østgaard, N. Østgaard, R. R. Vondrak, G. A. Germany, G. Lu, A. Viljanen

    Published in Annales Geophysicae (2005-02-01)
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  7. 7

    Multi-scale observations of magnetotail flux transport during IMF-northward non-substorm intervals by A. Grocott, T. K. Yeoman, S. E. Milan, O. Amm, H. U. Frey, L. Juusola, R. Nakamura, C. J. Owen, H. Rème, T. Takada, T. Takada

    Published in Annales Geophysicae (2007-07-01)
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  8. 8

    Interplanetary magnetic field rotations followed from L1 to the ground: the response of the Earth's magnetosphere as seen by multi-spacecraft and ground-based observations by M. Volwerk, J. Berchem, Y. V. Bogdanova, O. D. Constantinescu, M. W. Dunlop, J. P. Eastwood, P. Escoubet, A. N. Fazakerley, H. Frey, H. Hasegawa, B. Lavraud, B. Lavraud, E. V. Panov, C. Shen, J. K. Shi, M. G. G. T. Taylor, J. Wang, J. A. Wild, Q. H. Zhang, O. Amm, J. M. Weygand

    Published in Annales Geophysicae (2011-09-01)
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