Results 81 to 90 of about 32,968 (226)

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw, W. Younas, Y. Nishimura, C. Gabrielse, T. Beach, A. J. Coster, R. Pradipta, K. M. Groves   +7 more
wiley   +1 more source

Numerical Investigations of Low‐Latitude Ground Magnetic Fields Due To Cavity Mode Oscillations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Pi2 oscillations are known to be associated with cavity mode oscillations (CMOs) in the inner magnetosphere at low latitudes. CMOs can also be excited by interplanetary shocks on the dayside. We present results from a global linear MHD wave model in spherical coordinates that allows us to analyze these waves at equatorial latitudes.
K. Majmudar, R. L. Lysak, K. Takahashi
wiley   +1 more source

Explicit IMF By Dependence in Geomagnetic Activity: Modulation of Precipitating Electrons

Geophysical Research Letters, 2020
The most important driver of geomagnetic activity is the north–south ( Bz) component of the interplanetary magnetic field (IMF), which dominates the solar wind‐magnetosphere coupling and all solar wind coupling functions.
L. Holappa, T. Asikainen, K. Mursula
doaj   +1 more source

On the Effects of the Solar Wind Structure in the Global Distribution of dBH/dt ${\text{dB}}_{H}/\text{dt}$ Spikes During Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Variations in the solar wind, particularly those associated with interplanetary coronal mass ejections (ICMEs) and high‐speed streams (HSSs), drive geomagnetic disturbances that produce rapid changes in the ground magnetic field. These variations, commonly quantified by the time derivative of the horizontal magnetic field dBH/dt $\left({\text ...
José P. Marchezi, Amy Keesee, Michael Coughlan, Raman Mukundan, Victor Pinto, Ligia A. Da Silva, Livia R. Alves, Hyunju Connor, Don Hampton   +8 more
wiley   +1 more source

Cosmic Ray Anisotropy Generated by the June 22nd 2015 Interplanetary Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract On 22 June 2015, the near Earth interplanetary space was perturbed by a series of high‐speed streamers and interplanetary coronal mass ejections associated with an active region and two low‐latitude coronal holes. The interaction of these disturbances gave rise to the complex solar wind structure observed at 1 au.
A. Lara, K. P. Arunbabu, T. Niembro
wiley   +1 more source

Correlation of High‐Latitude Scintillation With Auroral Precipitation: Case Studies Using GNSS Radio Occultation Data From PlanetiQ

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This study presents a survey of high‐latitude ionospheric scintillation using GNSS radio occultation (RO) data from the PlanetiQ satellite. The analysis examines 483 high‐latitude RO tracks between January and May 2023, with 371 tracks exhibiting scintillation events.
Margaret W. Chen, Endawoke Yizengaw, James H. Hecht, Paul Straus, Charles S. Carrano, Tibor Durgonics, Keith M. Groves   +6 more
wiley   +1 more source

Mini-magnetospheres and Moon-magnetosphere interactions: Overview Moon-magnetosphere Interactions

, 2019
"Moon-magnetosphere interaction" stands for the interaction of magnetospheric plasma with an orbiting moon. Observations and modeling of moon-magnetosphere interaction is a highly interesting area of space physics because it helps to better understand the basic physics of plasma flows in the universe and it provides geophysical information about the ...
openaire   +2 more sources

Major Space Weather Risks Identified via Coupled Physics‐Engineering‐Economic Modeling

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract Space weather poses an important but under‐quantified threat to society. While severe geomagnetic storms are recognized as potential global catastrophes, their socio‐economic impacts remain poorly quantified. We present a novel physics‐engineering‐economic framework that links geophysical drivers to power grid geoelectric fields, transformer ...
Edward J. Oughton, Dennies K. Bor, Robert S. Weigel, C. Trevor Gaunt, Ridvan Dogan, Liling Huang, Jeffrey J. Love, Michael Wiltberger   +7 more
wiley   +1 more source

The electron density at the midpoint of the plasmapause

Frontiers in Astronomy and Space Sciences
The high density plasmasphere in the magnetosphere is often separated from a lower density region outside of the plasmasphere, called the plasmatrough, by a sharp gradient in electron density called the plasmapause.
Richard E. Denton, Phoebe M. Tengdin, Phoebe M. Tengdin, David P. Hartley, Jerry Goldstein, Jinmyoung Lee, Kazue Takahashi   +6 more
doaj   +1 more source

Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite

Geophysical Research Letters, 2019
Molecular ions in the magnetosphere can be a tracer of fast ion outflows from the deep ionosphere. Statistical properties of molecular ions (O2+/NO+/N2+) in the ring current are investigated based on ion composition measurements (
K. Seki, K. Keika, S. Kasahara, S. Yokota, T. Hori, K. Asamura, N. Higashio, M. Takada, Y. Ogawa, A. Matsuoka, M. Teramoto, Y. Miyoshi, I. Shinohara   +12 more
doaj   +1 more source