Results 101 to 110 of about 9,307,202 (259)

Schumann Resonance Frequency Increase Following Recurrent Solar Wind Stream Onsets

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract Recurrent high‐speed streams and corotating interaction regions (HSS/CIRs) are common solar‐wind drivers, but their influence on Schumann resonance (SR) frequencies remains poorly quantified. We analyzed 173 threshold‐defined HSS/CIR proxy onsets using superposed epoch composites, bootstrap uncertainty, and a month‐matched random‐epoch null ...
J. Tacza, G. Sátori, A. Neska, T. Raita, T. Bozoki   +4 more
wiley   +1 more source

Geomagnetic field variations in the past: an introduction

, 2020
In the last decades, palaeomagnetic research has provided us with a picture of the temporal and spatial behaviour of the Earth’s magnetic field (EMF) from its origin up to the present day.
Di Chiara, Anita, Herrero-Bervera, Emilio, Tema, Evdokia   +2 more
core   +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

In-flight calibration of the fluxgate magnetometer on Macau Science Satellite-1

Earth and Planetary Physics
High-precision magnetic field measurements are crucial for understanding Earth’s internal structure, space environment, and dynamic geomagnetic variations.
YiXin Qiu, Ying Zhang, YaSong Ge, AiMin Du, ShuQuan Sun, Lin Zhao, Hao Luo, Lei Wang, Lin Tian, Zhi Li, Xiao Feng   +10 more
doaj   +1 more source

The Size of Greater India: Estimates by Comparing the Apparent Polar Wander Paths of the Tethyan Himalaya and the Indian Craton

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The northern extent of Greater India is a critical, yet highly debated, parameter for reconstructing the India‐Asia collision. Previous paleomagnetic estimates, including the fill‐the‐gap and fixed great circle approaches, yield widely varying results, spanning from ∼200 to ∼3,000 km. These large discrepancies stem principally from two primary
Xianwei Jiao, Suo Wang, Yong Zhao, Tongming Fang   +3 more
wiley   +1 more source

LiveWire: Horizontal Geoelectric Field Prediction With 1‐hr Lead‐Time Using Multi‐Fidelity Boosted Neural Networks

Journal of Geophysical Research: Machine Learning and Computation
Geomagnetically Induced Currents (GICs) are electrical currents generated by rapid changes in the geomagnetic field during space weather events, posing risks to power grids and pipelines.
A. Hu, E. Camporeale, G. Lucas, T. Berger   +3 more
doaj   +1 more source

Equatorial F‐Region Responses to the Main Phase of the 10 May 2024 Geomagnetic Storm Over the South American Sector: Observations and Model Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This study examines the equatorial ionospheric response over the South American sector during the onset of the extreme 2024 Mother's Day geomagnetic storm, which began at ∼17 UT on 10 May and reached the G5 level. Pronounced disturbances in ionospheric electrodynamics were observed under both daytime and nighttime conditions. Variations in the
A. M. Santos, J. R. Souza, I. S. Batista, M. Bravo, C. G. M. Brum, J. H. A. Sobral, S. S. Chen, R. Sá, L. C. A. Resende, J. Moro, P. R. Jauer, L. da Silva, D. Medeiros, P. A. B. Nogueira, E. A. Kherani, V. F. Andrioli, M. A. Abdu, G. S. Adeniran, R. de Jesus, A. A. Pimenta, G. Yang, F. A. de Souza   +21 more
wiley   +1 more source

Coordinate Systems and Transforms in Space Physics: Terms, Definitions, Implementations, and Recommendations for Reproducibility

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract In space physics, acronyms for coordinate systems (e.g., GEI, GSM) are commonly used; however, differences in their definitions and implementations can prevent reproducibility. In this work, we compare definitions in online resources, software packages, and frequently cited journal articles and show that implementation differences can lead to ...
R. S. Weigel, A. Y. Shih, R. Ringuette, I. Christopher, S. M. Petrinec, S. Turner, R. M. Candey, G. K. Stephens, B. Cecconi   +8 more
wiley   +1 more source

Global Three‐Dimensional Simulation of Magnetospheric Dynamics During the Extreme Geomagnetic Storm of 10–11 May 2024

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This study presents a high‐resolution three‐dimensional global magnetohydrodynamic (MHD) simulation of the historic geomagnetic storm of 10–11 May 2024, using observational data for the ACE solar wind input. This extreme event was characterized by intense solar wind dynamic pressure (∼50 nPa) and exceptionally strong interplanetary magnetic ...
Kyung Sun Park
wiley   +1 more source

Mathematical Properties Relevant to Geomagnetic Field Modeling

, 2010
Geomagnetic field modeling consists in converting large numbers of magnetic observations into a linear combination of elementary mathematical functions that best describes those observations.The set of numerical coefficients defining this linear ...
Nils Olsen, Hulot, Gauthier, Sabaka, Terence J., Olsen, Nils, Gauthier Hulot, Terence J. Sabaka   +5 more
core   +1 more source