Results 71 to 80 of about 336,044 (232)

Pattern and evolution of seismo-ionospheric disturbances following the 2011 Tohoku earthquakes from GPS observations

, 2014
Global Positioning System (GPS) has been widely used to sense crustal deformation and ionospheric anomalies, particularly seismic ionospheric disturbances. In March 2011, the earthquakes with magnitude of up to Mw=9 occurred in Tohoku near the east coast
Jin, Shuanggen, Li, J. H., Jin, Rui
core  

Analysis of Ionospheric Disturbances in China During the December 2023 Geomagnetic Storm Using Multi-Instrument Data

Remote Sensing
This study investigates the ionospheric response over China during the geomagnetic storm that occurred on 1–2 December 2023. The data used include GPS measurements from the Crustal Movement Observation Network of China, BDS-GEO satellite data from IGS ...
Jun Tang, Sheng Wang, Jintao Wang, Mingxian Hu, Chaoqian Xu   +4 more
doaj   +1 more source

Validation of Global Ionospheric Specification (GIS) Electron Density Measurements During Solar Minimum to Solar Maximum Under Quiet and Disturbed Geomagnetic Conditions

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Global Ionospheric Specification (GIS) three‐dimensional electron density profiles constructed by assimilating the line‐of‐sight total electron content (TEC) from global navigation satellite system (GNSS) radio occultation (RO) measurements by FORMOSAT‐7/COSMIC‐2 (F7/C2) and ground‐based receiver network from international GNSS service ...
P. K. Rajesh, C. H. Charles Lin, C. Y. Lin, T. Matsuo, H. Jin, S. Perwitasari, M. Nishioka, Chao‐Yen Chen   +7 more
wiley   +1 more source

The Performance of DIXSG on Characterizing Global and Regional Ionospheric Disturbances Utilizing Geodetic Receiver Network‐A Case Study

Space Weather
As the 25th solar cycle enters a highly active phase, the resulting ionospheric irregularities induce disturbances in signals of Global Navigation Satellite System (GNSS), significantly disrupting its global stable positioning, navigation, and timing ...
Dongsheng Zhao, Xueli Zhang, Peicheng Zhang, Hao Liu, Kefei Zhang, Wang Li, Andong Hu, Longjiang Li, Shuanglei Cui, Yuhao Hou, Craig M. Hancock, Andrzej Krankowski   +11 more
doaj   +1 more source

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

Global Circulation of Martian Ionospheric Currents Revealed by Magnetometer Data

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract In the dynamo region of the Martian ionosphere, a large‐scale current is generated by charge separation: ions collide with neutrals while electrons preferentially gyrate around local magnetic field lines. Using MAVEN magnetometer data and a physics‐informed neural network constrained by Ampère's law and Gauss's law for magnetism (the Neural ...
T. Delcourt, A. Mittelholz
wiley   +1 more source

A multi-instrumental study of ionospheric disturbances associated with the 2024 Mw 7.4 Hualien earthquake

Earth, Planets and Space
This study investigates the ionospheric disturbances triggered by the 2024 Mw 7.4 Hualien earthquake using a dense network of ground-based GNSS receivers and space-borne FORMOSAT-7/COSMIC-2 (F7/C2) radio occultation (RO) data.
Chia-Hung Chen, Yung-Ming Wang, I.-Te Lee   +2 more
doaj   +1 more source

First Observational Results of the Neutral Gas Mass Spectrometer Onboard the China's TianMu‐1 Constellation

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract In situ observations of thermospheric composition have long been scarce, limiting our understanding of the upper atmosphere and its response to space weather. This study focuses on the Neutral Gas Mass Spectrometer (NGMS) onboard the TM19 and TM20 satellites of China's TianMu‐1 constellation, presenting the first systematic elaboration of its ...
Jiangzhao Ai, Yongping Li, Xianguo Zhang, Yueqiang Sun, Hong Zeng, Weihua Bai, Hongbo Wang, Xiaoliang Zheng, Jia Li, Yujie Wang, Yuanyuan Cao, Xinchun Tang   +11 more
wiley   +1 more source

Coseismic Ionospheric Disturbances Detection With Multi-GNSS Case Study: Turkey Double Earthquakes on 6 February 2023

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
On 6 February 2023, at 01:17:34 UTC, a Mw 7.8 earthquake occurred in Turkey, with the epicenter located at 37.15$^{\circ }$N, 36.95$^{\circ }$E. Approximately 9 h later, another Mw 7.5 earthquake struck, with the epicenter located at 38.00$^{\circ }$N ...
Qiaoli Kong, Yingluo Liu, Yunqing Huang, Lingxin Sun, Qi Bai, Qian Li   +5 more
doaj   +1 more source

Quasi 6‐Day Wave Variability in the Thermosphere and Ionosphere: Observations and Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Satellite observations of the upper mesosphere and lower thermosphere from TIMED‐SABER and ICON‐MIGHTI reveal a clear Quasi 6‐Day Wave (Q6DW) event in the winds and temperatures in this region. This Q6DW event persists across multiple data sets throughout the middle‐to‐upper thermosphere and the F‐region ionosphere, including GOLD disk ...
Oluwafisayo P. Owolabi, Scott L. England, Yen‐Jung Wu   +2 more
wiley   +1 more source