Hasil Pencarian - O. Amm

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  1. 1
    Method of characteristics in spherical geometry applied to a Harang-discontinuity situation

    Method of characteristics in spherical geometry applied to a Harang-discontinuity situation oleh O. Amm

    Diterbitkan 1998-04-01
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  2. 2
    A new method to estimate ionospheric electric fields and currents using data from a local ground magnetometer network

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

    Diterbitkan 2007-06-01
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  3. 3
    New method for solving inductive electric fields in the non-uniformly conducting ionosphere

    New method for solving inductive electric fields in the non-uniformly conducting ionosphere oleh H. Vanhamäki, O. Amm, A. Viljanen

    Diterbitkan 2006-10-01
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  4. 4
    Analysis of ionospheric electrodynamic parameters on mesoscales – a review of selected techniques using data from ground-based observation networks and satellites

    Analysis of ionospheric electrodynamic parameters on mesoscales – a review of selected techniques using data from ground-based observation networks and satellites oleh H. Vanhamäki, H. Vanhamäki, O. Amm

    Diterbitkan 2011-03-01
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  5. 5
    Induction effects on ionospheric electric and magnetic fields

    Induction effects on ionospheric electric and magnetic fields oleh H. Vanhamäki, A. Viljanen, O. Amm

    Diterbitkan 2005-07-01
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  6. 6
    Spatial distribution of conductances and currents associated with a north-south auroral form during a multiple-substorm period

    Spatial distribution of conductances and currents associated with a north-south auroral form during a multiple-substorm period oleh O. Amm, A. Pajunpää, U. Brandström

    Diterbitkan 1999-11-01
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  7. 7
    Role of inductive electric fields and currents in dynamical ionospheric situations

    Role of inductive electric fields and currents in dynamical ionospheric situations oleh H. Vanhamäki, O. Amm, A. Viljanen

    Diterbitkan 2007-03-01
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  8. 8
    Corrigendum to "Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm" published in Ann. Geophys., 27, 2157–2171, 2009

    Corrigendum to "Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm" published in Ann. Geophys., 27, 2157–2171, 2009 oleh T. Pitkänen, A. T. Aikio, A. Kozlovsky, O. Amm

    Diterbitkan 2009-08-01
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  9. 9
    Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm

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

    Diterbitkan 2009-05-01
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  10. 10
    Characteristics of a stable arc based on FAST and MIRACLE observations

    Characteristics of a stable arc based on FAST and MIRACLE observations oleh P. Janhunen, A. Olsson, O. Amm, K. Kauristie

    Diterbitkan 2000-02-01
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  11. 11
    A model for estimating the relation between the Hall to Pedersen conductance ratio and ground magnetic data derived from CHAMP satellite statistics

    A model for estimating the relation between the Hall to Pedersen conductance ratio and ground magnetic data derived from CHAMP satellite statistics oleh L. Juusola, O. Amm, K. Kauristie, A. Viljanen

    Diterbitkan 2007-03-01
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  12. 12
    Statistical dependence of auroral ionospheric currents on solar wind and geomagnetic parameters from 5 years of CHAMP satellite data

    Statistical dependence of auroral ionospheric currents on solar wind and geomagnetic parameters from 5 years of CHAMP satellite data oleh L. Juusola, K. Kauristie, O. Amm, P. Ritter

    Diterbitkan 2009-03-01
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  13. 13
    Method to locate the polar cap boundary in the nightside ionosphere and application to a substorm event

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

    Diterbitkan 2006-08-01
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  14. 14
    Electrodynamics of an omega-band as deduced from optical and magnetometer data

    Electrodynamics of an omega-band as deduced from optical and magnetometer data oleh H. Vanhamäki, K. Kauristie, O. Amm, A. Senior, D. Lummerzheim, S. Milan

    Diterbitkan 2009-09-01
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  15. 15
    IMF effect on the polar cap contraction and expansion during a period of substorms

    IMF effect on the polar cap contraction and expansion during a period of substorms oleh A. T. Aikio, T. Pitkänen, I. Honkonen, I. Honkonen, M. Palmroth, O. Amm

    Diterbitkan 2013-06-01
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  16. 16
    Ionospheric currents estimated simultaneously from CHAMP satelliteand IMAGE ground-based magnetic field measurements: a statisticalstudy at auroral latitudes

    Ionospheric currents estimated simultaneously from CHAMP satelliteand IMAGE ground-based magnetic field measurements: a statisticalstudy at auroral latitudes oleh P. Ritter, H. Lühr, A. Viljanen, O. Amm, A. Pulkkinen, I. Sillanpää

    Diterbitkan 2004-01-01
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  17. 17
    EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere

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

    Diterbitkan 2011-02-01
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  18. 18
    Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models

    Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models oleh A. Viljanen, A. Pulkkinen, O. Amm, R. Pirjola, T. Korja, T. Korja, BEAR Working Group

    Diterbitkan 2004-01-01
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  19. 19
    Quantitative modelling of the closure of meso-scale parallel currents in the nightside ionosphere

    Quantitative modelling of the closure of meso-scale parallel currents in the nightside ionosphere oleh A. Marchaudon, J.-C. Cerisier, O. Amm, M. Lester, C. W. Carlson, G. K. Parks

    Diterbitkan 2004-01-01
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  20. 20
    Substorm topology in the ionosphere and magnetosphere during a flux rope event in the magnetotail

    Substorm topology in the ionosphere and magnetosphere during a flux rope event in the magnetotail oleh O. Amm, R. Nakamura, H. U. Frey, Y. Ogawa, M. Kubyshkina, A. Balogh, H. Rème

    Diterbitkan 2006-03-01
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