Results 41 to 50 of about 7,217 (205)
Journal of Geophysical Research: Space Physics, 2009 The specific entropy (s = p/ργ) and total entropy (S = p1/γV) of the plasma sheet during substorms are investigated with DMSP observations using a method that assumes ion isotropy (as also assumed in the derivation of S = p1/γV) and empirical magnetic field models that capture the expected characteristics of substorm phases.
Simon Wing, Jay R. Johnson
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A joint cluster and ground-based instrument study of two magnetospheric substorm events on 1st september 2002 [PDF]
, 2004 We present a coordinated ground- and space- based multi-instrument study of two magnetospheric substorm events that occurred on 1 September 2002, during the interval from 18:00 UT to 24:00 UT.
Dewhirst, J. P. +11 more
core +6 more sources
Substorms and Solar Eclipses: A Mutual Information Based Study
Geophysical Research Letters, 2023 Solar eclipses present a rare glimpse into the impact of ionospheric electrodynamics on the magnetosphere independent of other well studied seasonal influences.
S. E. Coyle +7 more
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Are Storm-Time Substorms Triggered or Spontaneous? [PDF]
Journal of Astronomy and Space Sciences, 2004 Magnetic storms are almost always accompanied with substorms or substorm-like disturbances. Understanding the nature of the storm-time substorm is important for the currently critical issue of the storm-substorm relation.
D.Y. Lee, H. J. Kim, C. R. Choi
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The development of the substorm expansive phase: The “eye” of the substorm
Geophysical Research Letters, 1987 The explosive onset and development of a clearly defined auroral substorm has been analysed using data from the ultraviolet imager aboard the VIKING satellite. These data permit the evolution of the substorm to be traced with a time resolution as high as 40 seconds.
Gordon Rostoker +4 more
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Potential merits for substorm research from imaging of charge-exchange neutral atoms [PDF]
Annales Geophysicae, 1995 The in situ observations of the Earth magnetosphere performed over the past decades of space research have provided a rather good understanding of many partial localized processes of the magnetospheric substorm.
I. A. Daglis, S. Livi
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The Onset of a Substorm and the Mating Instability [PDF]
Journal of Geophysical Research: Space Physics, 2021 AbstractThe paper underlines the view that the appearance of beading and its nonlinear growth in the onset arc occurs independently from the onset of reconnection in the tail at about 20 RE. Both events follow from an extreme thinning of the central current sheet of the tail at the end of the growth phase.
Haerendel, Gerhard +2 more
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Conjunction of tail satellites for substorm study: ISTP event of 1997 January 2
Geophysical Research Letters, 2000 The interval of 1997 January 1–2 was identified as a favorable conjunction of Geotail and IMP‐8 to examine substorm activity in the mid‐tail region prior to data acquisition. On January 2, 1997, global auroral observations from Polar indicated a substorm
A. T. Y. Lui +14 more
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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 +6 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 +8 more
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