Results 181 to 190 of about 10,218,549 (296)

Wave‐Based Quantification of Ion Composition in the Earth's Magnetosphere‐Ionosphere‐Coupling Region

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Ion composition critically determines the basic kinetic characteristics of plasma and affects energy transmission of the magnetosphere. However, it exhibits significant variations with altitude, latitude, local time, longitude, and also with geomagnetic and solar activity.
Zhijie Qin   +4 more
wiley   +1 more source

Meridional Currents of the Equatorial Electrojet

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The equatorial electrojet (EEJ) is a prominent eastward geomagnetic current flowing at the dayside magnetic dip equator, peaking just before noon. Associated meridional currents also flow perpendicular to the main current, predicted through modeling and observed in rocket measurements.
X. G. V. M. Topacio, A. Yoshikawa
wiley   +1 more source

Quasi‐Trapped Zebra Stripes: Radial Transport Driven by Dual‐Pulse Electric Fields

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Energetic electron spectra in Earth's inner radiation belt often exhibit regular stripe‐like features, known as “zebra stripes,” which are typically attributed to the drift motion of stably‐trapped electrons disturbed by electric field perturbations.
Ziyang Wang   +5 more
wiley   +1 more source

A Physics‐Informed Neural Network Approach to the Gannon Storm

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Extreme geomagnetic storms, such as the May 2024 Gannon event, pose significant risks to technological infrastructure, requiring robust forecasting models. Here, we apply Physics‐Informed Neural Networks (PINNs) to the Burton equation to model the storm's ring current dynamics by studying the temporal evolution of the SuperMAG SMR index during
M. Lacal   +3 more
wiley   +1 more source

Observations and Simulation of Thermospheric Composition Changes During the 14 October 2023 Solar Eclipse

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract This study presents a full‐period imaging of the thermospheric composition response to the 14 October 2023 annular solar eclipse, combining GOLD (Global‐scale Observations of the Limb and Disk) far‐ultraviolet observations with solar‐irradiance‐driven WACCM‐X (Whole Atmosphere Community Climate Model with thermosphere–ionosphere extension ...
Yu Jiao   +4 more
wiley   +1 more source

Geophysical insights from the first geomagnetic field absolute intensity curve for central Asia (2200BCE-2000CE), and implications for archaeomagnetic dating. [PDF]

open access: yesSci Rep
Bonilla-Alba R   +8 more
europepmc   +1 more source

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang   +7 more
wiley   +1 more source

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