Results 71 to 80 of about 525 (164)

Multi‐Decadal Trends in the Low Latitude foF2 Driven by Secular Magnetic Variations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Long‐term ionospheric trends have been widely studied, but their origin and magnitude remain subjects of debate. This study quantifies the linear trend in the F2‐region critical frequency (foF2) and its local time dependence using observations from eight low‐latitude ionosonde stations.
D. Singh, S. R. Zhang, L. P. Goncharenko, I. S. Batista, A. J. Coster   +4 more
wiley   +1 more source

Second generation of CSES global geomagnetic field model (CGGM-2) and associated candidate models for IGRF-14

Earth, Planets and Space
This paper presents the second generation of the China Seismo-Electromagnetic Satellite (CSES) Global Geomagnetic Field Model (CGGM-2), specifically designed to derive candidate models for the fourteenth generation of the International Geomagnetic ...
Yanyan Yang, Zhima Zeren, Gauthier Hulot, Jie Wang, Nils Olsen, Siquan Yang, Bin Zhou, Werner Magnes, Bingjun Cheng, Jianpin Huang, Louis Chauvet, Dehe Yang, Roland Lammegger, Jian Lin, Dapeng Liu, Hengxin Lu, Na Zhou, Rui Yan, Zhenxia Zhang, Wei Chu, Song Xu, He Huang, Jing Cui, Qiao Tan, Wenjing Li, Feng Guo   +25 more
doaj   +1 more source

Influence of the Eccentric Geomagnetic Dipole on Longitude Variations of Compressional Upstream Wave Amplitudes in the Topside Ionosphere: Results From the MSS‐1A Satellite

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Based on 2‐year magnetic data from the Macau science satellite, we investigate the compressional Pc3‐4 pulsations (between 16 and 100 mHz) driven by upstream waves (UWs). Our results confirm larger UWs amplitudes in the South Atlantic Anomaly (SAA) longitudes, agreeing with previous missions.
Chao Xiong, Haibin Liu, Hermann Lühr, Chunyu Xu   +3 more
wiley   +1 more source

Quasi‐Trapped Zebra Stripes: Radial Transport Driven by Dual‐Pulse Electric Fields

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Energetic electron spectra in Earth's inner radiation belt often exhibit regular stripe‐like features, known as “zebra stripes,” which are typically attributed to the drift motion of stably‐trapped electrons disturbed by electric field perturbations.
Ziyang Wang, Ying Liu, Qiugang Zong, Yixin Sun, Hong Zou, Yuguang Ye   +5 more
wiley   +1 more source

Model Sederhana IGRF Regional Indonesia 2010-2015

, 2010
Kebutuhan untuk mengetahui medan geomagnet utama tanpa pengaruh faktor eksternal sangat besar bagi para surveyor pertambangan, pengguna atau penyedia navigasi satelit dan ilmuwan -ilmuwan yang mempelajari cuaca ...
Fitri Nuraeni
core  

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

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

International Geomagnetic Reference Field: the 12th generation [PDF]

The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA).
Canet E, Brocco L, Lowes FJ, Sirol O, Tangborn A, Toffner-Clausen L, Sabaka TJ, Alken P, Thomson A, Bondar T, Petrov V, Gillet N, Fournier A, Korte M, Lalanne X, Civet F, Barrois O, Thebault E, Leger JM, Ridley V, Finlay CC, Saturnino D, Kuang W, Rother M, Chambodut A, Aubert J, Hulot G, Macmillan S, Schachtschneider R, Zvereva T, Bertrand F, Hamoudi M, Vigneron P, Mandea M, Manoj C, Du A, Coisson P, Lesur V, Fratter I, Olsen N, Maus S, Beggan CD, Hamilton B, Chulliat A, Wardinski I, Langlais B, Boness A, Jager T   +47 more
core  

Extracting geomagnetic data from IGRF-12 with Python

, 2017
<p>The earth's core behaves as a big magnet. On the surface, we measure different values in magnetic surveys as we move from one geomagnetic pole to the other.
De Pinho, Bruno, De Pinho, Bruno (5526179)   +1 more
core   +1 more source

Westward drift in the secular variation of the main geomagnetic field derived from IGRF models

, 2021
The eight generation of the International Geomagnetic Reference Field (IGRF) is used to investigate the westward drift in the Secular Variation (SV) of the Main Geomagnetic (MG) field for the period 1900-2000.
De Meyer, F.
core