Results 41 to 50 of about 4,523 (241)

Energetic electron precipitation during substorm injection events: High-latitude fluxes and an unexpected midlatitude signature [PDF]

, 2008
Geosynchronous Los Alamos National Laboratory (LANL-97A) satellite particle data, riometer data, and radio wave data recorded at high geomagnetic latitudes in the region south of Australia and New Zealand are used to perform the first complete modeling ...
Menk, F. W., Menk, F.W., Neil. R. Thomson, Brundell, J.B., Annika Seppälä, John Bähr, Reiner H. W. Friedel, Neil Cobbett, Tracy Moffat‐Griffin, Andrew J. Kavanagh, Craig J. Rodger, Brundell, J., Kavanagh, Andrew J., Rodger, C. J., James Brundell, Seppälä, A., Kavanagh, A.J., Friedel, R.H.W., Thomson, N. R., Bähr, J., Clilverd, M. A., Rodger, C.J., Friedel, R. W. H., Moffat-Griffin, T., Thomson, N.R., Frederick W. Menk, Cobbett, N., Clilverd, M.A., Mark A. Clilverd   +28 more
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A superposed epoch analysis of auroral evolution during substorm growth, onset and recovery: open magnetic flux control of substorm intensity [PDF]

, 2009
We perform two superposed epoch analyses of the auroral evolution during substorms using the FUV instrument on the Imager for Magnetopause-to-Aurora Global Explorer ( IMAGE) spacecraft. The larger of the two studies includes nearly 2000 substorms.
Hubert, Benoît, Boakes, PD, Colin Forsyth (7434155), Adrian Grocott (7590026), Forsyth, C., Milan, S.E., B. Hubert (7590023), Grocott, A, Imber, S. M., A. Grocott, Milan, SE, Imber, SM, S. M. Imber, Hubert, B., Boakes, P.D., Milan, S. E., P. D. Boakes, Boakes, P. D., C. Forsyth, Forsyth, C, Steve E. Milan (7589666), S.M. Imber (7592039), Grocott, A., Imber, S.M., S. E. Milan, Peter David Boakes (7591733), B. Hubert, Hubert, B   +27 more
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Characterization of local time dependence of equatorial spread F responses to substorms in the American sector

Journal of Space Weather and Space Climate, 2023
Substorms have been found to play an important role in ionospheric electrodynamics at low and equatorial latitudes. In this study, we have investigated the possible influence of substorm on the generation of equatorial spread F (ESF).
Gao Shunzu, Cai Hongtao, Zhan Weijia, Wan Xin, Xiong Chao, Zhang Hong, Xu Chen   +6 more
doaj   +1 more source

Magnetospheric substorms

Eos, Transactions American Geophysical Union, 1968
The magnetospheric substorm is perhaps the most widely known yet most poorly understood facet of magnetospheric disturbances. It is generally agreed that the substorm results from an explosive conversion of magnetic energy generated by the interaction between the solar wind and the magnetosphere.
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Cosmic radio noise absorption events associated with equatorward drifting arcs during a substorm growth phase [PDF]

, 2004
International audienceCosmic radio noise absorption (CNA) events associated with equatorward drifting arcs during a substorm growth phase are studied by using simultaneous optical auroral, IRIS imaging riometer and EISCAT incoherent scatter radar ...
S. R. Marple, Aikio, A. T., A. T. Aikio, J. R. T. Jussila, Shalimov, S., Marple, S. R., S. Shalimov, Jussila, J. R. T.   +7 more
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Timing and location of substorm onsets from THEMIS satellite and ground based observations [PDF]

Annales Geophysicae, 2009
The unprecedented coverage of the THEMIS GBO station network coupled with high temporal and spatial resolution allowed us to determine the various stages of the global scale developments of the optical aurora at substorm onsets.
S. Mende, V. Angelopoulos, H. U. Frey, E. Donovan, B. Jackel, K.-H. Glassmeier, J. P. McFadden, D. Larson, C. W. Carlson   +8 more
doaj   +1 more source

Stormtime Energetics: Energy Transport Across the Magnetopause in a Global MHD Simulation

Frontiers in Astronomy and Space Sciences, 2021
Coupling between the solar wind and magnetosphere can be expressed in terms of energy transfer through the separating boundary known as the magnetopause.
Austin Brenner, Austin Brenner, Tuija I. Pulkkinen, Tuija I. Pulkkinen, Qusai Al Shidi, Gabor Toth   +5 more
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Flux closure during a substorm observed by cluster, double star, IMAGE FUV, SuperDARN, and greenland magnetometers [PDF]

, 2006
We examine magnetic flux closure during an ex- tended substorm interval on 29 August 2004 involving a two-stage onset and subsequent re-intensifications.
Hubert, Benoît, C. M. Carr, Hubert, B., Carr, C. M., Milan, S. E., Lucek, E. A., Lucek, E., Wild, J. A., J. A. Wild, Watermann, J. F., Carr, Chris M., S. E. Milan, E. A. Lucek, Slavin, J. A., J. F. Watermann, J. A. Slavin, Bosqued, J. M., B. Hubert, J. M. Bosqued   +18 more
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EISCAT/CRRES observations: Nightside ionospheric ion outflow and oxygen-rich substorm injections [PDF]

, 1996
We present combined observations made near midnight by the EISCAT radar, all-sky cameras and the combined released and radiation efects satellite (CRRES) shortly before and during a substorm.
Gazey, N. G. J., Aylward, A. D., Bunting, R., Wilken, B., Perry, C., Gazey, N.G.J., Bunting, R.J., Opgenoorth, H., Lockwood, M., Smith, P., Lockwood M, Coles S, Lockwood, Mike, Aylward AD, Aylward, A.D., Grandé, M., Coles, S., Gazey NGJ, Perry, C.H., Smith PN, Gazey, N., Smith, P. N., M. Grande, M. Gr, N. G. J. Gazey, Grande M, Bunting RJ, H. Opgenoorth, B. Wilken, A. D. Aylward, Smith, P.N., Bunting, R. J., Perry, C. H., Wilken B, M. Lockwood, S. Coles, Opgenoorth H, P. N. Smith, Perry CH, R. J. Bunting, Aylward, A., C. H. Perry   +41 more
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The substorm

Eos, Transactions American Geophysical Union, 1989
The substorm is a thing obscure/ We cannot make it out for sure/ But physicists with lots of nerve/ Fill in details they can't observe/ They see it in their own grand visions/ Of tearing modes with no collisions/ That squeeze away the plasma sheet/ To make opposing fluxes meet/ And in their merging, oh so swift/ Great plasmoids are cut adrift/ Or else ...
openaire   +1 more source