Results 71 to 80 of about 65,677 (256)

Climatology of Medium‐Scale Traveling Ionospheric Disturbances Over Continental US Using GNSS TEC From 2012 to 2023

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu, Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Hanli Liu   +4 more
wiley   +1 more source

Derivation of the Two‐Dimensional Distribution of Low‐Energy Electron Precipitation From 630‐nm All‐Sky Auroral Images and Its Application to the Polar Cap Boundary Near Midnight

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract We present a methodology for deriving the horizontal two‐dimensional distribution of low‐energy electron precipitation, specifically the possible lower bound of the differential energy flux of electron precipitation at 100 eV, from a 630‐nm auroral image obtained with a ground‐based all‐sky imager.
K. Yashima, S. Taguchi, K. Hosokawa, H. Koike   +3 more
wiley   +1 more source

The High Plasma Density Observed Along the PJ57 Juno Flyby of Io Implies the Presence of a Dense Atomic Corona

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract On December 2023, the Juno spacecraft made a flyby of Io above the northern hemisphere at a closest approach (CA) altitude of ∼1,500 km (PJ57). The Juno/Waves and Radio‐occultation measurements showed a surprising large electron density ∼28,000 cm−3 near closest approach.
V. Dols, F. Bagenal
wiley   +1 more source

Suspected seismo‐ionospheric coupling observed by satellite measurements and GPS TEC related to the M7.9 Wenchuan earthquake of 12 May 2008 [PDF]

, 2014
Kwangsun Ryu, M. Parrot, S. G. Kim, Kwang Seob Jeong, J. S. Chae, С. А. Пулинец, K.‐I. Oyama   +6 more
openalex   +1 more source

Longitudinal Variability of Pre‐Midnight Equatorial Plasma Bubbles Under Disturbed Geomagnetic Conditions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Equatorial plasma bubbles (EPBs) pose significant challenges to trans‐ionospheric radio communication and navigation systems. Because of their disruptive effects, evaluating and predicting them is key for the development of space systems. The influence of geomagnetic activity on EPBs remains unclear, partly due to limited low‐latitude neutral ...
Gilda de Lourdes González, Thomas J. Immel, Yen‐Jung Wu, L. Claire Gasque, Brian J. Harding, Colin Triplett, Cesar E. Valladares   +6 more
wiley   +1 more source

InSAR-Based Assessment of Land Subsidence Induced by Coal Mining in Karaganda, Kazakhstan

Geomatics
The objective of this study is to quantify and characterize ground deformations induced by underground coal mining in the Karaganda coal basin, Kazakhstan, in order to improve the understanding of subsidence processes and their long-term evolution.
Assel Satbergenova, Dinara Talgarbayeva, Andrey Vilayev, Asset Urazaliyev, Alena Yelisseyeva, Azamat Kaldybayev, Semen Gavruk   +6 more
doaj   +1 more source

The Origin of Non‐Gyrotropic Distribution Functions in Compressed Current Sheets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Non‐gyrotropic distribution functions are often observed in thin current sheets prior to magnetic reconnection. This study uses NASA's Magnetospheric Multiscale mission data to confirm a novel source of agyrotropy in compressed current sheets and highlights its significance in reconnection.
Ami M. DuBois, Chris Crabtree, Emily Lichko, Gurudas Ganguli   +3 more
wiley   +1 more source

Ionospheric Response to the Extreme Geomagnetic Storm of 10–11 May 2024 Based on Total Electron Content Observations in the Central Asian and East Asian Regions

Atmosphere
The ionospheric response to the major geomagnetic storm (SYM-H = −518 nT) of 10–11 May 2024 was investigated using total electron content (TEC) observations from the Central Asian (CAR) and East Asian (EAR) regions.
Galina Gordiyenko, Feza Arikan, Yuriy Litvinov, Murat Zhiganbaev   +3 more
doaj   +1 more source

Role of Large‐Scale Traveling Ionospheric Disturbances in the Positive Storm Phase Observed by the Millstone Hill Radar and GNSS TEC Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A moderate geomagnetic storm was driven by high‐speed solar wind stream on 14 March 2016. We show that large‐scale traveling ionospheric disturbances (LSTIDs) played a significant role in producing the ionospheric storm positive phase at mid‐latitudes in the North American sector.
G. P. Geethakumari, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, A. Coster, A. Maute, A. Marchaudon, P.‐L. Blelly   +8 more
wiley   +1 more source

Propagation of ULF waves through the ionosphere: Inductive effect for oblique magnetic fields [PDF]

, 2004
M. D. Sciffer, C. L. Waters, F. W. Menk
openalex   +1 more source