Results 11 to 20 of about 292 (102)

Dynamic Evolution of a Storm‐Time “Super‐EPB” Event Over China on the Magnetically Disturbed Night of 01 December 2023

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun, Jiyao Xu, Wei Yuan, Yajun Zhu, Maosheng He, Wenjie Sun, Guozhu Li, Jiaojiao Zhang, Hong Gao, Aibin Zhang, Weijun Liu, Guojun Wang   +11 more
wiley   +1 more source

The GFZ IGRF candidate models and an assessment of secular variation predictions

Earth, Planets and Space
We outline the creation of the GFZ candidate models for the most recent International Geomagnetic Reference Field (IGRF-14), which is the result of an initiative by a working group of the International Association of Geomagnetism and Aeronomy (IAGA) and ...
Martin Rother, Maximilian Schanner, Monika Korte, Ingo Michaelis, Jürgen Matzka, Marcos Vinicius Siqueira da Silva   +5 more
doaj   +1 more source

Global Implications of Terrain‐Induced Bias in Paleomagnetic Data From 3D Forward Modeling of Mt. Etna

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract In paleomagnetism, records of paleosecular variation (PSV) on centennial timescales are often based on magnetic measurements from lava flows. However, samples from recent flows that cooled in known magnetic fields often fail to produce the expected paleomagnetic directions, and samples from the same flow often show large within‐ and between ...
A. E. Hendrickx, C. Thieulot, L. V. de Groot   +2 more
wiley   +1 more source

The Spanish contribution to IGRF-14

Earth, Planets and Space
This study presents the methodology and results of the Spanish team contribution to the 14th generation of the International Geomagnetic Reference Field (IGRF-14), headed by Universidad Complutense de Madrid (UCM).
Mario Serrano, F. Javier Pavón-Carrasco, Saioa A. Campuzano, Santiago Marsal, J. Miquel Torta, J. Manuel Tordesillas, Julián Fiz   +6 more
doaj   +1 more source

Tectonic Evolution of the Mariana Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Mariana Trough is an active back‐arc basin formed by subduction of the Pacific Plate beneath the Philippine Sea Plate and provides an ideal setting for investigating the evolution of back‐arc basins. In this study, we compile bathymetric, magnetic, and gravity data to reconstruct the formation history of the entire basin.
Seitaro Ono, Kyoko Okino, Nobukazu Seama, Toshitsugu Yamazaki, Hisanori Iwamoto   +4 more
wiley   +1 more source

Attitude Determination of Micro-Satellite Using Geomagnetism and Magnetometer Data [PDF]

Journal of Astronomy and Space Sciences, 1992
Geomagnetic data from 3-axis magnetometer and the IGRF model (tilted-eccentric dipole model) were used to determine the attitude of a satellite. We compared the values of the geomagnetic model with the magnetometer data and two attitude angles, called α ...
Jae-Ho Seok, Kyu-Hong Choi
doaj  

Discrepancies and Transformation Between Space‐Based and Ground‐Based Dst Indices: Insights From Swarm and CSES

Space Weather, Volume 24, Issue 10, October 2026.
Abstract The Disturbance Storm Time (Dst) index is a critical metric primarily reflecting the intensity of symmetric part of the magnetospheric ring current. Although satellite magnetometry has enabled the calculation of a space‐based Dst index, such measurements exhibit a systematic bias when compared to the conventionally used ground‐based Dst. Using
Mengjie Wang, Yanyan Yang, Yong Ji, Zeren Zhima, Chao Xiong, Jie Wang, Roberto Battiston, Mirko Piersanti, Bin Zhou   +8 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

Parameterization of the Latitudinal Dependence of ULF Waves in the Magnetosphere via Long‐Term Statistical Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Ultra‐low frequency (ULF) waves are crucial drivers of energetic electron radial diffusion in Earth's radiation belts. However, present radial diffusion coefficients are predominantly derived for equatorially mirroring electrons, relying on ULF wave power models from near‐equatorial spacecraft.
G. A. Riggs, W. Tu, T. Sarris
wiley   +1 more source

Identifying Alfvénic Modulation of Quasi‐Static Potential Structures Above Aurora by Optical Methods

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Much observational evidence exists for the presence of quasi‐electrostatic potential drops above aurorae and their role in acceleration of auroral electrons. However, the temporal evolution of these potential structures is less well studied. We present an optical‐only method for investigating counter‐flowing auroral forms, hypothesized to be ...
N. Brindley, D. Whiter
wiley   +1 more source