Results 71 to 80 of about 9,307,202 (259)

MCADAM: A Continuous Paleomagnetic Dipole Moment Model for at Least 3.7 Billion Years

Geophysical Research Letters, 2022
Understanding the evolution of Earth's magnetic field can provide insights into core processes and can constrain plate tectonics and atmospheric shielding.
Richard K. Bono, Greig A. Paterson, Andrew J. Biggin   +2 more
doaj   +1 more source

Seasonal and Diurnal Variability of Thermospheric Metastable Helium Observed by Multi‐Platform Observations and Numerical Modeling

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Metastable helium (He∗ ${\text{He}}^{\ast }$) in the thermosphere emits at 1,083 nm and provides a powerful diagnostic of thermospheric composition, solar radiation, and transport. Its detection remains challenging because of its extremely low density and high‐altitude.
Zhenwei Liu, Chuan Huang, Jinru Cheng, Tangsheng Cheng, Hang Zhou, Chaomei Wu, Chen Liang, Tingdi Chen, Weilong Luo, Chong Wang, Zhaofeng Wang, Ruocan Zhao, Xianghui Xue   +12 more
wiley   +1 more source

Unexpected major geomagnetic storm caused by faint eruption of a solar trans-equatorial flux rope

Nature Communications
Some geomagnetic storms’ solar origins are ambiguous, making them hard to predict. On March 23, 2023, a severe geomagnetic storm occurred, however, forecasts based on remote-sensing observations failed to predict it.
Weilin Teng, Yingna Su, Haisheng Ji, Qingmin Zhang   +3 more
doaj   +1 more source

Ionospheric F-region currents estimated from Macau Science Satellite-1 and Swarm satellite magnetic data

Earth and Planetary Physics
Accurate modeling of Earth’s ionospheric F-region currents is essential for refining geomagnetic field models and understanding magnetosphere-ionosphere coupling.
JuYuan Xu, HongBo Yao, Keke Zhang
doaj   +1 more source

First Observation of Four‐Band Ion Cyclotron Whistlers

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen, Hui Zhu, Tao Xian, Gaopeng Lu, Yingying Zhao, Zhijie Qin, Zhenghao She   +6 more
wiley   +1 more source

An Innovative Approach for Estimating Coseismic Surface Uplifts Using Ionospheric Observations From Remote GNSS Stations: First Application for the 2025 Myanmar Earthquake

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The Mw 7.7 Myanmar earthquake on 28 March 2025 ruptured ∼480 km of the Sagaing Fault. Its fault slip distribution remains poorly constrained by three‐dimensional surface displacement data due to sparse GNSS‐coverage near the fault. Satellite‐based synthetic aperture radars capture meters of right‐lateral displacements but isolating vertical ...
Mala S. Bagiya, Shubham K. Rajewar, Kosuke Heki, Vineet K. Gahalaut, Neeraj Gurjar, A. P. Dimri   +5 more
wiley   +1 more source

峰山地磁気観測所におけるMIセンサー地磁気観測データ

, 2022
This dataset contains the following two kinds of data. (1) YYYYMMDD.sec files Measurement of geomagnetic field variations obtained with MI sensor at Mineyama observatory. Time is in UT.
能勢, 正仁, NOSÉ, Masahito
core   +1 more source

Cosmogenic 10Be as a Tracer for Recent Heliospheric Encounters With Interstellar Cold Clouds and Nearby Supernovae

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Recent works suggest there are periods when the Sun encountered massive interstellar cold clouds which compressed the heliosphere to within Earth's orbit, exposing Earth to interstellar galactic cosmic rays and energetic particles of heliospheric origin.
Anna Nica, Merav Opher, Jesse A. Miller, Jennifer L. Middleton, Joe Giacalone   +4 more
wiley   +1 more source

MISTA candidate magnetic field models for IGRF-14 derived from MSS-1, Swarm and observatory data

Earth, Planets and Space
The International Geomagnetic Reference Field (IGRF) is a spherical harmonic model representing the large-scale Earth’s main magnetic field and its secular variation (SV).
Hongbo Yao, Pengfei Liu, Qing Yan, Yi Jiang, Juyuan Xu, Liang Yin, Zhengyong Ren, Yufeng Lin, Yan Feng, Yongxin Pan, Keke Zhang   +10 more
doaj   +1 more source

Onset of Thrusting at ca. 23 Ma in East Kunlun Mountains, Northern Tibet, Recorded by Syntectonic Strata

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The timing of Cenozoic deformation in the East Kunlun Mountains, northern Tibet, is crucial for understanding plateau growth but remains disputed due to the scarcity of direct chronological constraints on specific tectonic structures. Here, we present a high‐density‐sampling magnetostratigraphic record from the Xiaohongshan section, interior ...
Leyi Li, Hong Chang, Balázs Bradák, Xiaoke Qiang   +3 more
wiley   +1 more source