Results 31 to 40 of about 153 (126)

A new paleomagnetic constraint on the duration of a twin caldera-forming eruption sequence: a potential solution to an enduring problem in decoding >VEI 7 eruption timescales

Earth, Planets and Space
New paleomagnetic results from the twin caldera-forming Mamaku–Ohakuri eruption deposits in the Taupō Volcanic Zone of New Zealand show that the entire pyroclastic sequence accumulated within a geomagnetic excursion event.
Darren M. Gravley, Takeshi Hasegawa, Nobutatsu Mochizuki, Chie Kusu, Makoto Okada   +4 more
doaj   +1 more source

Robustness of characteristics of the Matuyama-Brunhes geomagnetic field reversal found in global models

Frontiers in Earth Science
Paleomagnetic data enables the global reconstruction of the geomagnetic field, allowing the investigation of significant events like polarity reversals and excursions.
Ahmed Nasser Mahgoub, Ahmed Nasser Mahgoub, Monika Korte, Sanja Panovska, Maximilian Schanner   +4 more
doaj   +1 more source

Ionospheric Characterization Over Iran Using Multi‐Frequency IMB HF Transmitters and Global WSPRNET Reception During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The Ionospheric Monitoring Beacon network in Iran provides continuous, multi‐frequency high‐frequency (HF) transmissions using WSPRNET modulation, enabling global reception and near–real‐time monitoring of ionospheric propagation conditions.
A. Mahmoudian, Saba Hafizi Lotfabadi, Mohammad Azimi   +2 more
wiley   +1 more source

Rotation‐Controlled Diurnal Evolution of Uranus' Asymmetric Bow Shock at Equinox

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract Uranus possesses the most extreme magnetic and rotational geometry in the solar system, resulting in a uniquely dynamic and asymmetric interaction between its magnetosphere and the solar wind. Here we investigate the diurnal evolution of the Uranian bow shock (BS) at equinox using global multifluid magnetohydrodynamic simulations constrained ...
X. Cao, C. Paty, F. Chu, J. Lei
wiley   +1 more source

Solar Wind–Magnetosphere–Ionosphere Coupling Under Extreme External Driving: Characteristics of Dayside Ground Magnetic Disturbances

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The objective of the present study is to investigate solar wind‐magnetosphere‐ionosphere coupling (SWMIC) under intense external driving in terms of dayside ground magnetic disturbances. Dayside magnetic reconnection drives a region‐1 sense current system, the SWMIC current system.
Shinichi Ohtani
wiley   +1 more source

Investigating Magnetosphere‐Ionosphere‐Thermosphere Coupling During Geomagnetic Storms With a Novel Thermospheric Disturbance Index

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract This study introduces a novel thermospheric disturbance index, JpT ${J}_{p}^{T}$, designed to describe density variations during geomagnetic storms. The index is constructed by applying the spectral whitening method to thermospheric density data derived from precise orbit determination of satellites from 2015 to 2019.
Yihan Wu, Tian Mao, Jing‐Song Wang, Xiao‐Wei Zhao, Zhou Chen, Ming‐Xian Zhao   +5 more
wiley   +1 more source

Disclosing the May 2024 Geomagnetic Storm: A Synergistic View From the Remote Talos Dome Station on the Antarctic Plateau, Ground Networks, and Space

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We analyze the May 2024 geomagnetic storm using a unique longitudinal chain of Antarctic stations, including the new remote Talos Dome measurement site. By combining its high‐resolution magnetic data with observed values from coastal (Terra Nova Bay and Scott Base) and the polar‐cap (Dome C) observatories, Southern Hemisphere auroral indices ...
Lucia Santarelli, Mauro Regi, Paola De Michelis, Paolo Bagiacchi, Giovanni Benedetti   +4 more
wiley   +1 more source

Updates, Examples and Validation of the Global Ionosphere Thermosphere Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude dependent heating efficiency; an ionospheric wind‐driven dynamo; improved neutral, ion, and ...
A. J. Ridley, C. Wu, A. Bukowski, J. Bell   +3 more
wiley   +1 more source

ENSO‐Mediated Linkage Between the East Asian Summer Monsoon and Cordilleran Ice Sheet Discharge During MIS 3

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Understanding the mechanisms linking low‐latitude monsoon variability and high‐latitude ice‐sheet discharge is critical for elucidating past atmospheric teleconnections, yet direct evidence for such linkages during the last glacial period remains limited. Here we present a high‐resolution terrigenous input record from the South China Sea (SCS)
Haosen Wang, Yi Zhong, Yuanjie Li, Hai Li, Xing Xu, Xiaoxu Shi, Qingsong Liu   +6 more
wiley   +1 more source

Reconstruction of high-resolution paleomagnetic variations in the middle Gauss chronozone, including the upper and lower boundaries of the Mammoth reversed subchronozone

Earth, Planets and Space
In this study, we provide paleomagnetic records, including the upper and lower boundaries of the Mammoth reversed subchronozone, reconstructed from a continuous outcrop of the upper marine Pliocene in the southernmost part of the Boso Peninsula, which is
Akihiro Tanimoto, Makoto Okada, Ryota Hayashi   +2 more
doaj   +1 more source