Results 101 to 110 of about 4,372 (239)

Comparative Dynamics of Substorms and Sawtooth Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present a comprehensive comparative analysis of magnetospheric substorms and sawtooth events using multi‐point observations from ground‐based magnetometers, geostationary satellites, and the Time History of Events and Macroscale Interactions during Substorms mission.
C. C. DiMarco, T. I. Pulkkinen, R. L. McPherron, M. G. Henderson, J. W. Gjerloev   +4 more
wiley   +1 more source

Etude des processus de transport et conversion d'énergie dans la magnétosphère terrestre à partir des observations THEMIS

, 2012
Les magnétosphères sont des objets universels qui résultent de l'interaction entre un écoulement plasma et un obstacle magnétisé. Leurs structures reposent sur un système de courant qui assurent la transition entre différents régimes plasma et à travers ...
Palin, Laurianne
core  

Fast Tearing Mode Driven by Demagnetized Electrons

Geophysical Research Letters
Recent MMS observations have discovered electron‐scale super‐thin current sheets (STCSs) with a partial electron demagnetization, which distinguishes them from the ion‐scale TCSs traditionally observed by the Cluster mission. Our investigation focuses on
Olga O. Tsareva, Makar V. Leonenko, Elena E. Grigorenko, Helmi V. Malova, Victor Yu. Popov, Lev M. Zelenyi   +5 more
doaj   +1 more source

Comprehensive Validation of Novel Deep Learning Architectures to Forecast Geomagnetic Substorms

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Magnetic substorms are disturbances in the terrestrial magnetosphere that can have significant space weather impacts, although forecasting their onset accurately remains an open problem. In this study, we develop multiple novel machine learning architectures based on convolutional neural networks, long short‐term memory networks, extreme ...
A. Essop, N. Mbatha, J. A. E. Stephenson
wiley   +1 more source

Magnetotail flux ropes

Geophysical Research Letters, 1984
ISEE‐3 magnetometer observations are presented that are consistant with flux ropes within the magnetotail. Three instances have been found. The flux ropes are identified by a strong magnetic field in their core, a bipolar magnetic field signature, and a double peaked field signature indicative of an off‐center crossing.
D. G. Sibeck, G. L. Siscoe, J. A. Slavin, E. J. Smith, S. J. Bame, F. L. Scarf   +5 more
openaire   +1 more source

Superposition of Doppler‐Shifting Magnetopause Kelvin‐Helmholtz Modes Through Dynamic Mode Decomposition of a Global MHD Simulation

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Kelvin‐Helmholtz instability (KHI) mediates the viscous‐like solar‐terrestrial interaction by generating magnetopause surface waves that quickly become non‐linear. Basic theory predicts the locally most‐unstable linear wave dominates.
H. M. Kelly, M. O. Archer, J. P. Eastwood, M. Heyns, J. W. B. Eggington, J. P. Chittenden   +5 more
wiley   +1 more source

The Role of Planetary Rotation in Polar Cusp Localization

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Juno observations have revealed that Jupiter's polar cusps are displaced toward dusk and even the nightside, contradicting the Earth‐derived paradigm that is confined to narrower ranges near noon. These findings underscore the overlooked influence of planetary rotation on magnetospheric dynamics, exposing a critical gap in current theoretical ...
Junjie Chen, Peter A. Delamere, William Lotko, Yan Xu, Zhonghua Yao, Oliver Brambles, Enhao Feng, Ziyi Yang, Kevin H. Pham, Binzheng Zhang   +9 more
wiley   +1 more source

Field line resonances in a stretched magnetotail: CANOPUS optical and magnetometer observationsournal of Geophysical Research: Space Physics, 107(A7), [pp

, 2002
Ground-based observations support the existence of 1-4 mHz field line resonances (FLRs) at auroral latitudes. The low frequencies suggest that many nightside FLRs are excited on stretched magnetic field lines in the inner plasma sheet.
Wanliss, J. A., Rankin, Robert, Samson, J. C., Tikhonchuk, V. T.   +2 more
core   +1 more source

Electron Dispersion at the Electron Edge of the Earth's Magnetospheric Cusp

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission observes electron energy‐latitude dispersion at the equatorward edge of the magnetospheric cusp, and high‐cadence Analyzer for Cusp Electrons (ACE) measurements resolve the dispersed edge. The inverse velocity dispersion (low energy before high energy)
J. S. Halekas, S. A. Henderson, S. R. Bounds, S. Ruhunusiri, A. Moore, I. W. Christopher, D. M. Miles, J. B. Bonnell, B. L. Burkholder, I. H. Cairns, L.‐J. Chen, H. K. Connor, I. M. DesJardin, J. C. Dorelli, C. Feltman, S. A. Fuselier, K. Goodrich, G. Hospodarsky, A. N. Jaynes, J. Labelle, M. Øieroset, S. M. Petrinec, B. Powers, K. J. Trattner, S. L. Soni, R. Strangeway, D. Sur   +26 more
wiley   +1 more source

Evidence of a Subkinetic Spectral Break in a Strongly Turbulent Collisionless Plasma

The Astrophysical Journal
We investigate the magnetic ( B ) and electric ( E ) field spectra in the dissipation range of strong turbulence of a collisionless plasma. This investigation, which is relevant to turbulence studies in many astrophysical settings, is enabled by high ...
R. E. Ergun, T. Vo, Y. Qi, A. Chasapis, N. Pathak, M. E. Usanova, N. Ahmadi, H. George, S. J. Schwartz   +8 more
doaj   +1 more source