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Modulation of the substorm current wedge by bursty bulk flows: 8 September 2002-Revisited.
Published in:
Journal of Geophysical Research. Space Physics, 2016, v. 121, n. 5, p. 4466, doi. 10.1002/2015JA022262
By:
- Palin, L.;
- Opgenoorth, H. J.;
- Ågren, K.;
- Zivkovic, T.;
- Sergeev, V. A.;
- Kubyshkina, M. V.;
- Nikolaev, A.;
- Kauristie, K.;
- Kamp, M.;
- Amm, O.;
- Milan, S. E.;
- Imber, S. M.;
- Facskó, G.;
- Palmroth, M.;
- Nakamura, R.
Publication type:
Article
A method to derive maps of ionospheric conductances, currents, and convection from the Swarm multisatellite mission.
Published in:
Journal of Geophysical Research. Space Physics, 2015, v. 120, n. 4, p. 3263, doi. 10.1002/2014JA020154
By:
- Amm, O.;
- Vanhamäki, H.;
- Kauristie, K.;
- Stolle, C.;
- Christiansen, F.;
- Haagmans, R.;
- Masson, A.;
- Taylor, M. G. G. T.;
- Floberghagen, R.;
- Escoubet, C. P.
Publication type:
Article
Approximate forms of daytime ionospheric conductance.
Published in:
Journal of Geophysical Research. Space Physics, 2014, v. 119, n. 12, p. 10397, doi. 10.1002/2014JA020665
By:
- Ieda, A.;
- Oyama, S.;
- Vanhamäki, H.;
- Fujii, R.;
- Nakamizo, A.;
- Amm, O.;
- Hori, T.;
- Takeda, M.;
- Ueno, G.;
- Yoshikawa, A.;
- Redmon, R. J.;
- Denig, W. F.;
- Kamide, Y.;
- Nishitani, N.
Publication type:
Article
Magnetosphere-ionosphere coupling of global Pi2 pulsations.
Published in:
Journal of Geophysical Research. Space Physics, 2014, v. 119, n. 4, p. 2717, doi. 10.1002/2013JA019085
By:
- Keiling, A.;
- Marghitu, O.;
- Vogt, J.;
- Amm, O.;
- Bunescu, C.;
- Constantinescu, V.;
- Frey, H.;
- Hamrin, M.;
- Karlsson, T.;
- Nakamura, R.;
- Nilsson, H.;
- Semeter, J.;
- Sorbalo, E.
Publication type:
Article
Theory of Cowling channel formation by reflection of shear Alfven waves from the auroral ionosphere.
Published in:
Journal of Geophysical Research. Space Physics, 2013, v. 118, n. 10, p. 6416, doi. 10.1002/jgra.50514
By:
- Yoshikawa, A.;
- Amm, O.;
- Vanhamäki, H.;
- Nakamizo, A.;
- Fujii, R.
Publication type:
Article
Illustration of Cowling channel coupling to the shear Alfven wave.
Published in:
Journal of Geophysical Research. Space Physics, 2013, v. 118, n. 10, p. 6405, doi. 10.1002/jgra.50513
By:
- Yoshikawa, A.;
- Amm, O.;
- Vanhamäki, H.;
- Fujii, R.
Publication type:
Article
Ionospheric response to oscillatory flow braking in the magnetotail.
Published in:
Journal of Geophysical Research. Space Physics, 2013, v. 118, n. 4, p. 1529, doi. 10.1002/jgra.50190
By:
- Panov, E. V.;
- Baumjohann, W.;
- Nakamura, R.;
- Amm, O.;
- Kubyshkina, M. V.;
- Glassmeier, K.‐H.;
- Weygand, J. M.;
- Angelopoulos, V.;
- Petrukovich, A. A.;
- Sergeev, V. A.
Publication type:
Article
Birth and life of auroral arcs embedded in the evening auroral oval convection: A critical comparison of observations with theory.
Published in:
Journal of Geophysical Research. Space Physics, 2012, v. 117, n. A12, p. n/a, doi. 10.1029/2012JA018128
By:
- Haerendel, G.;
- Frey, H. U.;
- Chaston, C. C.;
- Amm, O.;
- Juusola, L.;
- Nakamura, R.;
- Seran, E.;
- Weygand, J. M.
Publication type:
Article
An application of the finite length Cowling channel model to auroral arcs with longitudinal variations.
Published in:
Journal of Geophysical Research. Space Physics, 2012, v. 117, n. A11, p. n/a, doi. 10.1029/2012JA017953
By:
- Fujii, R.;
- Amm, O.;
- Vanhamäki, H.;
- Yoshikawa, A.;
- Ieda, A.
Publication type:
Article
Cluster multipoint study of the acceleration potential pattern and electrodynamics of an auroral surge and its associated horn arc.
Published in:
Journal of Geophysical Research. Space Physics, 2012, v. 117, n. A10, p. n/a, doi. 10.1029/2012JA018046
By:
- Marklund, G. T.;
- Sadeghi, S.;
- Li, Bin;
- Amm, O.;
- Cumnock, J. A.;
- Zhang, Y.;
- Nilsson, H.;
- Masson, A.;
- Karlsson, T.;
- Lindqvist, P.-A.;
- Fazakerley, A.;
- Lucek, E.;
- Pickett, J.
Publication type:
Article
Ionospheric Joule heating and Poynting flux in quasi-static approximation.
Published in:
Journal of Geophysical Research. Space Physics, 2012, v. 117, n. A8, p. n/a, doi. 10.1029/2012JA017841
By:
- Vanhamäki, H.;
- Yoshikawa, A.;
- Amm, O.;
- Fujii, R.
Publication type:
Article
Comparison between SuperDARN flow vectors and equivalent ionospheric currents from ground magnetometer arrays.
Published in:
Journal of Geophysical Research. Space Physics, 2012, v. 117, n. A5, p. n/a, doi. 10.1029/2011JA017407
By:
- Weygand, J. M.;
- Amm, O.;
- Angelopoulos, V.;
- Milan, S. E.;
- Grocott, A.;
- Gleisner, H.;
- Stolle, C.
Publication type:
Article
Self-consistent formulation for the evolution of ionospheric conductances at the ionospheric E region within the M-I coupling scheme.
Published in:
Journal of Geophysical Research. Space Physics, 2011, v. 116, n. A9, p. n/a, doi. 10.1029/2011JA016449
By:
- Yoshikawa, A.;
- Nakamizo, A.;
- Amm, O.;
- Vanhamäki, H.;
- Fujii, R.;
- Tanaka, Y.-M.;
- Uozumi, T.;
- Yumoto, K.;
- Ohtani, S.
Publication type:
Article
A self-consistent synthesis description of magnetosphere-ionosphere coupling and scale-dependent auroral process using shear Alfvén wave.
Published in:
Journal of Geophysical Research. Space Physics, 2011, v. 116, n. A8, p. n/a, doi. 10.1029/2011JA016460
By:
- Yoshikawa, A.;
- Amm, O.;
- Vanhamäki, H.;
- Fujii, R.
Publication type:
Article
Flux transport, dipolarization, and current sheet evolution during a double-onset substorm.
Published in:
Journal of Geophysical Research. Space Physics, 2011, v. 116, n. A5, p. n/a, doi. 10.1029/2010JA015865
By:
- Nakamura, R.;
- Baumjohann, W.;
- Panov, E.;
- Petrukovich, A. A.;
- Angelopoulos, V.;
- Volwerk, M.;
- Magnes, W.;
- Nishimura, Y.;
- Runov, A.;
- Russell, C. T.;
- Weygand, J. M.;
- Amm, O.;
- Auster, H.-U.;
- Bonnell, J.;
- Frey, H.;
- Larson, D.;
- McFadden, J.
Publication type:
Article
Reformulation and energy flow of the Cowling channel.
Published in:
Journal of Geophysical Research. Space Physics, 2011, v. 116, n. A2, p. n/a, doi. 10.1029/2010JA015989
By:
- Fujii, R.;
- Amm, O.;
- Yoshikawa, A.;
- Ieda, A.;
- Vanhamäki, H.
Publication type:
Article
A statistical investigation of the Cowling channel efficiency in the auroral zone.
Published in:
Journal of Geophysical Research. Space Physics, 2011, v. 116, n. A2, p. n/a, doi. 10.1029/2010JA015988
By:
- Amm, O.;
- Fujii, R.;
- Kauristie, K.;
- Aikio, A.;
- Yoshikawa, A.;
- Ieda, A.;
- Vanhamäki, H.
Publication type:
Article
Small and meso-scale properties of a substorm onset auroral arc.
Published in:
Journal of Geophysical Research. Space Physics, 2010, v. 115, n. A10, p. n/a, doi. 10.1029/2010JA015537
By:
- Frey, H. U.;
- Amm, O.;
- Chaston, C. C.;
- Fu, S.;
- Haerendel, G.;
- Juusola, L.;
- Karlsson, T.;
- Lanchester, B.;
- Nakamura, R.;
- Østgaard, N.;
- Sakanoi, T.;
- Séran, E.;
- Whiter, D.;
- Weygand, J.;
- Asamura, K.;
- Hirahara, M.
Publication type:
Article
Energy input from the exterior cusp into the ionosphere: Correlated ground-based and satellite observations.
Published in:
Geophysical Research Letters, 2007, v. 34, n. 4, p. n/a, doi. 10.1029/2006GL028617
By:
- Yordanova, E.;
- Sundkvist, D.;
- Buchert, S. C.;
- André, M.;
- Ogawa, Y.;
- Morooka, M.;
- Margithu, O.;
- Amm, O.;
- Fazakerley, A. N.;
- Réme, H.
Publication type:
Article
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.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2011, v. 29, n. 9, p. 1549, doi. 10.5194/angeo-29-1549-2011
By:
- Volwerk, M.;
- Berchem, J.;
- Bogdanova, Y.V.;
- Constantinescu, O. D.;
- Dunlop, M. W.;
- Eastwood, J. P.;
- Escoubet, P.;
- Fazakerley, A. N.;
- Frey, H.;
- Hasegawa, H.;
- Lavraud, B.;
- Panov, E. V.;
- Shen, C.;
- Shi, J. K.;
- Taylor, M. G. G. T.;
- Wang, J.;
- Wild, J. A.;
- Zhang, Q. H.;
- Amm, O.;
- Weygand, J. M.
Publication type:
Article
Observations of an auroral streamer in a double oval configuration.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2011, v. 29, n. 4, p. 701, doi. 10.5194/angeo-29-701-2011
By:
- Amm, O.;
- Nakamura, R.;
- Takada, T.;
- Kauristie, K.;
- Frey, H. U.;
- Owen, C. J.;
- Aikio, A.;
- Kuula, R.
Publication type:
Article
Substorm Current Wedge Revisited.
Published in:
Space Science Reviews, 2015, v. 190, n. 1-4, p. 1, doi. 10.1007/s11214-014-0124-9
By:
- Kepko, L.;
- McPherron, R.;
- Amm, O.;
- Apatenkov, S.;
- Baumjohann, W.;
- Birn, J.;
- Lester, M.;
- Nakamura, R.;
- Pulkkinen, T.;
- Sergeev, V.
Publication type:
Article
Low-altitude electron acceleration due to multiple flow bursts in the magnetotail.
Published in:
Geophysical Research Letters, 2014, v. 41, n. 3, p. 777, doi. 10.1002/2013GL058982
By:
- Nakamura, R.;
- Karlsson, T.;
- Hamrin, M.;
- Nilsson, H.;
- Marghitu, O.;
- Amm, O.;
- Bunescu, C.;
- Constantinescu, V.;
- Frey, H. U.;
- Keiling, A.;
- Semeter, J.;
- Sorbalo, E.;
- Vogt, J.;
- Forsyth, C.;
- Kubyshkina, M. V.
Publication type:
Article
Reconnection Hall current system observed in the magnetotail and in the ionosphere.
Published in:
Geophysical Research Letters, 2009, v. 36, n. 8, p. n/a, doi. 10.1029/2009GL037239
By:
- Snekvik, K.;
- Juusola, L.;
- Østgaard, N.;
- Amm, O.
Publication type:
Article
Auroral streamers and magnetic flux closure.
Published in:
Geophysical Research Letters, 2007, v. 34, n. 15, p. n/a, doi. 10.1029/2007GL030580
By:
- Hubert, B.;
- Kauristie, K.;
- Amm, O.;
- Milan, S. E.;
- Grocott, A.;
- Cowley, S. W. H.;
- Pulkkinen, T. I.
Publication type:
Article
Analysis of ionospheric electrodynamic parameters on mesoscales - a review of selected techniques using data from ground-based observation networks and satellites.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2011, v. 29, n. 3, p. 467, doi. 10.5194/angeo-29-467-2011
By:
- Vanhamäki, H.;
- Amm, O.
Publication type:
Article
EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2011, v. 29, n. 2, p. 299, doi. 10.5194/angeo-29-299-2011
By:
- Pitkänen, T.;
- Aikio, A. T.;
- Amm, O.;
- Kauristie, K.;
- Nilsson, H.;
- Kaila, K. U.
Publication type:
Article
Effects of a solar wind dynamic pressure increase in the magnetosphere and in the ionosphere.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2010, v. 28, n. 10, p. 1945, doi. 10.5194/angeo-28-1945-2010
By:
- Juusola, L.;
- Andréeová, K.;
- Amm, O.;
- Kauristie, K.;
- Milan, S. E.;
- Palmroth, M.;
- Partamies, N.
Publication type:
Article
Comparison of the open-closed field line boundary location inferred using IMAGE-FUV SI12 images and EISCAT radar observations.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2010, v. 28, n. 4, p. 883, doi. 10.5194/angeo-28-883-2010
By:
- B. Hubert;
- A. T. Aikio;
- O. Amm;
- T. Pitkänen;
- K. Kauristie;
- S. E. Milan;
- S. W. H. Cowley;
- J.-C. Gérard
Publication type:
Article
Ionospheric tomography in Bayesian framework with Gaussian Markov random field priors.
Published in:
Radio Science, 2015, v. 50, n. 2, p. 138, doi. 10.1002/2014RS005431
By:
- Norberg, J.;
- Roininen, L.;
- Vierinen, J.;
- Amm, O.;
- McKay-Bukowski, D.;
- Lehtinen, M.
Publication type:
Article
Beacon satellite receiver for ionospheric tomography.
Published in:
Radio Science, 2014, v. 49, n. 12, p. 1141, doi. 10.1002/2014RS005434
By:
- Vierinen, J.;
- Norberg, J.;
- Lehtinen, M. S.;
- Amm, O.;
- Roininen, L.;
- Väänänen, A.;
- Erickson, P. J.;
- McKay-Bukowski, D.
Publication type:
Article
Multipulse and double-pulse velocities of Scandinavian Twin Auroral Radar Experiment (STARE) echoes.
Published in:
Radio Science, 2005, v. 40, n. 3, p. n/a, doi. 10.1029/2004RS003151
By:
- Uspensky, M.;
- Koustov, A.;
- Sofieva, V.;
- Amm, O.;
- Kauristie, K.;
- Schmidt, W.;
- Nielsen, E.;
- Pulkkinen, T.;
- Pellinen, R.;
- Milan, S.;
- Pirjola, R.
Publication type:
Article
Local determination of ionospheric plasma convection from coherent scatter radar data using the SECS technique.
Published in:
Journal of Geophysical Research. Space Physics, 2010, v. 115, n. A3, p. n/a, doi. 10.1029/2009JA014832
By:
- Amm, O.;
- Grocott, A.;
- Lester, M.;
- Yeoman, T. K.
Publication type:
Article
Substorm current wedge driven by plasma flow vortices: THEMIS observations.
Published in:
Journal of Geophysical Research. Space Physics, 2009, v. 114, n. A1, p. n/a, doi. 10.1029/2009JA014114
By:
- Keiling, A.;
- Angelopoulos, V.;
- Runov, A.;
- Weygand, J.;
- Apatenkov, S. V.;
- Mende, S.;
- McFadden, J.;
- Larson, D.;
- Amm, O.;
- Glassmeier, K.-H.;
- Auster, H. U.
Publication type:
Article
Local field-aligned currents in the magnetotail and ionosphere as observed by a Cluster, Double Star, and MIRACLE conjunction.
Published in:
Journal of Geophysical Research. Space Physics, 2008, v. 113, n. A7, p. n/a, doi. 10.1029/2007JA012759
By:
- Takada, T.;
- Nakamura, R.;
- Juusola, L.;
- Amm, O.;
- Baumjohann, W.;
- Volwerk, M.;
- Matsuoka, A.;
- Klecker, B.;
- Snekvik, K.;
- Owen, C. J.;
- Fazakerley, A. N.;
- Frey, H. U.;
- Rème, H.;
- Lucek, E. A.;
- Carr, C.
Publication type:
Article
Observations of an active thin current sheet.
Published in:
Journal of Geophysical Research. Space Physics, 2008, v. 113, n. A7, p. n/a, doi. 10.1029/2007JA012685
By:
- Runov, A.;
- Baumjohann, W.;
- Nakamura, R.;
- Sergeev, V. A.;
- Amm, O.;
- Frey, H.;
- Alexeev, I.;
- Fazakerley, A. N.;
- Owen, C. J.;
- Lucek, E.;
- André, M.;
- Vaivads, A.;
- Dandouras, I.;
- Klecker, B.
Publication type:
Article
Separation of Cowling channel and local closure currents in the vicinity of a substorm breakup spiral.
Published in:
Journal of Geophysical Research. Space Physics, 2008, v. 113, n. A6, p. n/a, doi. 10.1029/2008JA013021
By:
- Amm, O.;
- Fujii, R.
Publication type:
Article
Relation of substorm onset to Harang discontinuity.
Published in:
Journal of Geophysical Research. Space Physics, 2008, v. 113, n. A4, p. n/a, doi. 10.1029/2007JA012537
By:
- Weygand, James M.;
- McPherron, R. L.;
- Frey, H. U.;
- Amm, O.;
- Kauristie, K.;
- Viljanen, A.;
- Koistinen, A.
Publication type:
Article
Earthward flowing plasmoid: Structure and its related ionospheric signature.
Published in:
Journal of Geophysical Research. Space Physics, 2007, v. 112, n. A7, p. n/a, doi. 10.1029/2006JA012112
By:
- Zong, Q.-G.;
- Fu, S. Y.;
- Baker, D. N.;
- Goldstein, M. L.;
- Song, P.;
- Slavin, J. A.;
- Fritz, T. A.;
- Cao, J. B.;
- Amm, O.;
- Frey, H.;
- Korth, A.;
- Daly, P. W.;
- Reme, H.;
- Pedersen, A.
Publication type:
Article
Extreme solar-terrestrial events of October 2003: High-latitude and Cluster observations of the large geomagnetic disturbances on 30 October.
Published in:
Journal of Geophysical Research. Space Physics, 2005, v. 110, n. A9, p. n/a, doi. 10.1029/2004JA010927
By:
- Rosenqvist, L.;
- Opgenoorth, H.;
- Buchert, S.;
- McCrea, I.;
- Amm, O.;
- Lathuillere, C.
Publication type:
Article
A pseudo-breakup observation: Localized current wedge across the postmidnight auroral oval.
Published in:
Journal of Geophysical Research. Space Physics, 2003, v. 108, n. A1, p. SIA 4-1, doi. 10.1029/2002JA009276
By:
- Partamies, N.;
- Amm, O.;
- Kauristie, K.;
- Pulkkinen, T. I.;
- Tanskanen, E.
Publication type:
Article
Bursty bulk flow intrusion to the inner plasma sheet as inferred from auroral observations.
Published in:
Journal of Geophysical Research. Space Physics, 2003, v. 108, n. A1, p. n/a, doi. 10.1029/2002JA009371
By:
- Kauristie, K.;
- Sergeev, V. A.;
- Amm, O.;
- Kubyshkina, M. V.;
- Jussila, J.;
- Donovan, E.;
- Liou, K.
Publication type:
Article
A traveling convection vortex event study: Instantaneous ionospheric equivalent currents, estimation of field-aligned currents, and the role of induced currents.
Published in:
Journal of Geophysical Research. Space Physics, 2002, v. 107, n. A11, p. SIA 1-1, doi. 10.1029/2002JA009472
By:
- Amm, O.;
- Engebretson, M. J.;
- Hughes, T.;
- Newitt, L.;
- Viljanen, A.;
- Watermann, J.
Publication type:
Article
Method of characteristics for calculating ionospheric electrodynamics from multisatellite and ground-based radar data.
Published in:
Journal of Geophysical Research. Space Physics, 2002, v. 107, n. A10, p. SMP 3-1, doi. 10.1029/2001JA005077
By:
- Amm, O.
Publication type:
Article
The elementary current method for calculating ionospheric current systems from multisatellite and ground magnetometer data.
Published in:
Journal of Geophysical Research. Space Physics, 2001, v. 106, n. A11, p. 24843, doi. 10.1029/2001JA900021
By:
- Amm, O.
Publication type:
Article
Mesoscale ionospheric electrodynamics observed with the MIRACLE network: 1. Analysis of a pseudobreakup spiral.
Published in:
Journal of Geophysical Research. Space Physics, 2001, v. 106, n. A11, p. 24675, doi. 10.1029/2001JA900072
By:
- Amm, O.;
- Janhunen, P.;
- Kauristie, K.;
- Opgenoorth, H. J.;
- Pulkkinen, T. I.;
- Viljanen, A.
Publication type:
Article
At substorm onset, 40% of AL comes from underground.
Published in:
Journal of Geophysical Research. Space Physics, 2001, v. 106, n. A7, p. 13119, doi. 10.1029/2000JA900135
By:
- Tanskanen, E. I.;
- Viljanen, A.;
- Pulkkinen, T. I.;
- Pirjola, R.;
- Häkkinen, L.;
- Pulkkinen, A.;
- Amm, O.
Publication type:
Article
A plasma vortex revisited: The importance of including ionospheric conductivity measurements.
Published in:
Journal of Geophysical Research. Space Physics, 2000, v. 105, n. A11, p. 24889, doi. 10.1029/2000JA900102
By:
- Kosch, M. J.;
- Amm, O.;
- Scourfield, M. W. J.
Publication type:
Article
Direct determination of IMF B<sub>Y</sub>-related cusp current systems, using SuperDARN radar and multiple ground magnetometer data: A link to theory on cusp current origin.
Published in:
Journal of Geophysical Research. Space Physics, 1999, v. 104, n. A8, p. 17187, doi. 10.1029/1999JA900171
By:
- Amm, O.;
- Engebretson, M. J.;
- Greenwald, R. A.;
- Lühr, H.;
- Moretto, T.
Publication type:
Article

Found: 49