Results 131 to 140 of about 21,118 (299)

The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic Anomaly

, 2020
Christopher C. Finlay, Clemens Kloss, Nils Olsen, Magnus Hammer, Lars Tøffner‐Clausen, Alexander Grayver, Alexey Kuvshinov   +6 more
openalex   +2 more sources

Ionospheric Effects on Maximum Usable Frequency for a Cross‐Auroral and a Polar Cap HF Radio Link

Radio Science, Volume 61, Issue 5, May 2026.
Abstract Maximum usable frequency (MUF) is an important indicator of the ability of the ionosphere to support over‐the‐horizon propagation of high frequency (HF) radio waves. MUF depends on the location of the transmitter and receiver, and the structure of ionospheric electron density.
T. G. Cameron, K. W. Reiter, R. A. D. Fiori   +2 more
wiley   +1 more source

Palaeosecular variation and the current loop model of the geomagnetic field [PDF]

, 1982
Mrinmoy Roy, Jean‐Jacques Wagner
openalex   +1 more source

The Extreme GIC Occurrence During 11 years of Observations in the North‐West of Russia

Space Weather, Volume 24, Issue 5, May 2026.
Abstract For the first time, events with extreme magnitudes of geomagnetically induced currents (GICs) in the power lines during the quasi‐solar cycle (2012–2022) at auroral and subauroral latitudes are analyzed. GIC recordings from auroral Vykhodnoy (Murmansk region) and subauroral Kondopoga (Karelia) sub‐stations together with data from near‐by ...
V. B. Belakhovsky, V. A. Pilipenko, V. N. Selivanov, Ya. A. Sakharov, J. J. Zhang, V. V. Kolobov   +5 more
wiley   +1 more source

GRM as a follow-on to MAGSAT [PDF]

MAGSAT was the first near-Earth spacecraft dedicated to measurement of the vector geomagnetic field. Its objectives were to use the vector measurements to measure and model both the main field and the crustal field of the Earth.
Langel, R. A.
core   +1 more source

Timescales of geomagnetic secular acceleration in satellite field models and geodynamo models [PDF]

, 2012
Ulrich R. Christensen, I. Wardinski, Vincent Lesur   +2 more
openalex   +1 more source

Residuals to the CHAOS‐6 Geomagnetic Field Model Caused by Magnetospheric Currents During Enhanced Magnetic Activity [PDF]

, 2020
H. Lühr, Yunliang Zhou
openalex   +1 more source

Ionospheric Amplitude Scintillation Evolution Characterizing Using High Resolution S4 Index in the Crests of the EIA Regions During Solar Maximum Periods

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Ionospheric scintillation in the Equatorial Ionization Anomaly (EIA) region significantly impacts the performance of Global Navigation Satellite System (GNSS). While scintillation characteristics have been widely studied globally, the evolution of scintillation events remains underexplored.
Zhipeng Wang, Weilin Gong, Kai Guo, Yiming Wang, Joǎo Francisco Galera Monico, Zhizhao Liu   +5 more
wiley   +1 more source

A High‐Efficiency Multivariable TEC‐SOFTS Model for Ionospheric TEC Prediction: Validation Over China Area During Low and High Solar Activity Periods

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The ionospheric Total Electron Content (TEC) is a key parameter for characterizing the ionospheric properties. In this study, an efficient multivariable time series prediction model, TEC‐Series Core Fusion and efficient multivariable time series (TEC‐SOFTS), was constructed by combining multiple geomagnetic and solar activity indices ...
Chen Chen, Ling Huang, Wenwen Li, Dezhong Chen, Hongping Zhang, Yidong Lou, Lv Zhou   +6 more
wiley   +1 more source

Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020

Earth, Planets and Space
IGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair, Sam Califf
doaj   +1 more source