Results 101 to 110 of about 5,320 (271)

Statistical Survey of Fast Magnetosonic Waves in the L < 2 Region

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Fast magnetosonic waves are electromagnetic waves with frequencies ranging from a few Hertz to several hundred Hertz, observed primarily near the magnetic equator. Recent studies demonstrate that magnetosonic waves can propagate into the L<2 $L< 2$ region, while their distributions and propagation properties there remain unclear.
Zhijie Qin, Hui Zhu, Zhihai Ouyang, Yingying Zhao, Huicong Chen, Zhenghao She   +5 more
wiley   +1 more source

An alternative interpretation of Jupiter's “plasmapause”

Geophysical Research Letters, 1976
It has recently been suggested that Io is an important source of ions for the plasma detected by Pioneer 10 in the inner magnetosphere of Jupiter. Assuming this to be true, we show that near the orbit of Io the central collector of the Pioneer‐10 plasma instrument could detect only inwardly diffusing ions created at a radial distance greater than that ...
M. Neugebauer, A. Eviatar
openaire   +1 more source

Relative Timing of Nightside and Dayside Plasmapause Motion: Two Events in June 2001

Journal of Geophysical Research: Space Physics, 2020
We examine the relative timing of dayside and nightside plasmapause motion following southward interplanetary magnetic field turnings on 2 and 9 June 2001.
J. Goldstein, B. Sandel
semanticscholar   +1 more source

Periodic Response of Plasmasphere to Solar Wind High‐Speed Streams

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract We report the first observation of the plasmasphere's periodic response to solar wind high‐speed streams (HSS) during the declining phase of Solar Cycle 23, based on plasmapause location data from the IMAGE and THEMIS satellites. In both 2005 and 2008, the daily variability of the plasmapause exhibits a strong anti‐correlation with solar wind ...
Quan‐Han Li, Maosheng He, Yong‐Qiang Hao, Fei He, Xiao‐Xin Zhang   +4 more
wiley   +1 more source

A Probabilistic Model for Global EMIC Wave Activity Using Van Allen Probes Observations

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract Electromagnetic ion cyclotron (EMIC) waves play a key role in radiation belt dynamics through resonant interactions. However, their low occurrence probability, high variability, and spatial intermittency pose challenges for accurate modeling.
Sung Jun Noh, Steven K. Morley, Misa M. Cowee, Vania K. Jordanova   +3 more
wiley   +1 more source

Ring Current Ion Scattering by Electromagnetic Ion Cyclotron Waves: Nonlinear Resonance Effects

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Electromagnetic ion cyclotron (EMIC) waves can interact with ring current ions and scatter them into the atmosphere. The classical framework for studying EMIC wave–ion interaction is the quasi‐linear theory, which relies on the approximation of weak perturbations of particle trajectories for a single resonant interaction. However, intense EMIC
Xiaofei Shi, Vassilis Angelopoulos, Qianli Ma   +2 more
wiley   +1 more source

Resonant scattering of energetic electrons by unusual low-frequency hiss [PDF]

, 2014
We quantify the resonant scattering effects of the unusual low-frequency dawnside plasmaspheric hiss observed on 30 September 2012 by the Van Allen Probes. In contrast to normal (∼100-2000 Hz) hiss emissions, this unusual hiss event contained most of its
Blake, J. B., Bortnik, J., Chen, Lunjin, Claudepierre, S., Fennell, Joseph F., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, Wen, Ma, Qianli, Ni, Binbin, Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +13 more
core   +2 more sources

Multi‐Platform Observations of the Radial Penetration of Substorm Injected Electrons and Subsequent Slot‐Filling Event

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract On 15 February 2018 a co‐rotating interaction region (CIR) from an equatorial coronal hole reached the Earth. The CIR initiated a moderate and slowly intensifying geomagnetic storm, which began with a large and strong substorm injection.
Geoffrey D. Reeves, Jean‐Francois Ripoll, Lauren W. Blum, Christopher M. Cully, Christopher A. Colpitts, Mélanie Cosmides, Sadie S. Elliot, Reihaneh Ghaffari, Ashley D. Greeley, Richard B. Horne, Keisuke Hosokawa, Allison N. Jaynes, Yoshi Kasahara, Satoshi Kasahara, Kunihiro Keika, Satoshi Kurita, David M. Malaspina, Adam T. Michael, Robyn M. Millan, Takefumi Mitani, Yoshizumi Miyoshi, Viviane Pierrard, Drew L. Turner, Hilde N. Nesse, Aleksandr Y. Ukhorskiy, Maria E. Usanova, Maria Voskresenskaya, Shoichiro Yokota   +27 more
wiley   +1 more source

Ionospheric and magnetospheric plasmapauses' [PDF]

During August 1972, Explorer 45 orbiting near the equatorial plane with an apogee of about 5.2 R sub e traversed magnetic field lines in close proximity to those simultaneously traversed by the topside ionospheric satellite ISIS 2 near dusk in the L ...
Grebowsky, J. M., Hoffman, J. H., Maynard, N. C.   +2 more
core   +1 more source

On the cause and extent of outer radiation belt losses during the 30 September 2012 dropout event [PDF]

, 2014
On 30 September 2012, a flux dropout occurred throughout Earth\u27s outer electron radiation belt during the main phase of a strong geomagnetic storm.
Angelopoulos, V., Baker, D. N., Blake, J. B., Boyd, A. J., Claudepierre, S., Henderson, M. G., Huang, Chia-Lin L., Li, W., Morley, S. K., Reeves, Geoffrey, Rodriguez, J. V., Spence, Harlan E., Turner, D. L.   +12 more
core   +3 more sources