Results 91 to 100 of about 21,118 (299)

Unexpected major geomagnetic storm caused by faint eruption of a solar trans-equatorial flux rope

Nature Communications
Some geomagnetic storms’ solar origins are ambiguous, making them hard to predict. On March 23, 2023, a severe geomagnetic storm occurred, however, forecasts based on remote-sensing observations failed to predict it.
Weilin Teng, Yingna Su, Haisheng Ji, Qingmin Zhang   +3 more
doaj   +1 more source

Geomagnetic modeling by optimal recursive filtering [PDF]

The results of a preliminary study to determine the feasibility of using Kalman filter techniques for geomagnetic field modeling are given. Specifically, five separate field models were computed using observatory annual means, satellite, survey and ...
Estes, R. H., Gibbs, B. P.
core   +1 more source

Magnetohydrodynamic Simulation of the Interaction between Interplanetary Strong Shock and Magnetic Cloud and its Consequent Geoeffectiveness 2: Oblique Collision

, 2009
Numerical studies of the interplanetary "shock overtaking magnetic cloud (MC)" event are continued by a 2.5 dimensional magnetohydrodynamic (MHD) model in heliospheric meridional plane.
Baker, Berdichevsky, Burlaga, Burlaga, Burlaga, Burton, Dal Lago, Detman, Dryer, Dryer, Farrugia, Fry, Fry, Goldstein, Gombosi, Gonzalez, Gonzalez-Esparza, Gosling, Gosling, Groth, Hidalgo, Hidalgo, Hu, Hu, Huinan Zheng, Larson, Lugaz, Lundquist, Manchester, Manchester, Ming Xiong, Odstrcil, Odstrcil, Osherovich, Osherovich, Osherovich, Owens, Parker, Richardson, Richardson, Riley, Schmidt, Schwenn, Shui Wang, Smart, Smith, Smith, Toth, Tsurutani, Vandas, Vandas, Vandas, Vandas, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Webb, Wei, Wei, Xiong, Yuming Wang, Zhang   +68 more
core   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

Verification of the Geomagnetic Field Models Using Historical Satellite Measurements Obtained in 1964 and 1970 [PDF]

, 2022
Anatoly Soloviev, D. В. Peregoudov
openalex   +2 more sources

Regional Geomagnetic Field Modeling Based on Associated Legendre Polynomials

Applied Sciences
Global geomagnetic field models typically have low spatial resolution, whereas regional models are constrained by boundary effects and limited truncation levels.
Libo Zhu, Houpu Li, Jineng Ouyang, Bo Zhu, Ming Chang   +4 more
doaj   +1 more source

Mechanisms of Body Alignment in a Diurnal Songbird Migrant

Ethology, Volume 132, Issue 6, Page 399-411, June 2026.
The graphical abstract illustrates the body alignment mechanism of a diurnal songbird migrant, the dunnock (Prunella modularis). Dunnocks consistently expressed an angular body alignment, with inter‐individual variation at the level of the population.
Christina Spiliopoulou, Giuseppe Bianco, Mihaela Ilieva, Susanne Åkesson   +3 more
wiley   +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

LEO‐DOS Absorbed Dose Observations During the May 2024 Geomagnetic Superstorm

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Low‐Earth Orbit Space Radiation Dosimeter (LEO‐DOS) onboard Next‐Generation Satellite II (NEXTSat‐2) measured absorbed dose rate variations during the May 2024 geomagnetic superstorm. The observations show deep storm‐time penetration of solar energetic particle (SEP) spanning L ≈ 2–10, a pronounced enhancement near L ≈ 3 consistent with ...
Jongil Jung, Young‐Sil Kwak, Uk‐Won Nam, Suyeon Oh, Won‐Kee Park, Sukwon Youn, Jaeyoung Kwak, Jongdae Sohn, Bongkon Moon, Jaejin Lee, Sunghwan Kim, Sung‐Joon Ye   +11 more
wiley   +1 more source

Modeling of High-Precision Sea Surface Geomagnetic Field in the Northern South China Sea Based on PSO-BP Neural Network

Journal of Marine Science and Engineering
In existing regional geomagnetic field modeling, the smoothness of basic functions and the insufficient data constraints in marginal regions lead to the omission of detail features and extrapolation oscillations.
Hongjie Chen, Guiqian Wu, Haopeng Chen, Chuang Xu, Chunhong Wu   +4 more
doaj   +1 more source