Results 21 to 30 of about 24,900,530 (148)

Physics-based secular variation candidate models for the IGRF

Earth, Planets and Space, 2021
Each International Geomagnetic Reference Field (IGRF) model released under the auspices of the International Association of Geomagnetism and Aeronomy comprises a secular variation component that describes the evolution of the main magnetic field ...
Alexandre Fournier, Julien Aubert, Vincent Lesur, Erwan Thébault   +3 more
doaj   +1 more source

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

, 2015
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).
Finlay, Chris, Barrois, Olivier, Thébault, Erwan, Beggan, Ciarán D., Bertrand, Francois, Aubert, Julien, Boness, Axel, Tøffner-Clausen, Lars, Olsen, Nils, Alken, Patrick, Brocco, Laura, Bondar, Tatiana   +11 more
core   +3 more sources

Recent Developments in Fabrication Methods and Measurement Schemes for Optically Pumped Magnetic Gradiometers: A Comprehensive Review

Micromachines, 2023
Optically pumped gradiometers have long been utilized in measurement in the International Geomagnetic Reference Field (IGRF). With advancements in technologies such as laser diodes and microfabrication, integrated gradiometers with compact sizes have ...
Haifeng Dong, Hangfei Ye, Min Hu, Zongmin Ma   +3 more
doaj   +1 more source

US/UK Candidates for the Definitive Geomagnetic Reference Field Model DGRF-85 and the Predictive International Geomagnetic Reference Field Model IGRF-90.

Journal of geomagnetism and geoelectricity, 1992
Candidate models for the Definitive Geomagnetic Reference Field 1985 (DGRF-85) and the 1990 International Geomagnetic Reference Field (IGRF-90) have been produced jointly by the British Geological Survey and the United States Naval Oceanographic Office as part of their respective World Magnetic Modeling and Charting programs which are sponsored by the ...
BARRACLOUGH, David R., WILLIAMS, Larry D., QUINN, John M.   +2 more
openaire   +2 more sources

bluegreen-labs/igrf: IGRF CRAN release v1.0

, 2022
The 13th Generation International Geomagnetic Reference Field (IGRF) implemented as an R package. The igrf package provides an R version of the of the original IGRF model in Fortran published by Alken et al.
Koen Hufkens
core   +1 more source

Development of a Systematic Model for Study on the Phenomena of Ionospheric and Geomagnetic Variations [PDF]

Journal of Astronomy and Space Sciences, 1999
Solar activities ejecting high energy particles influence satellites and satellite communications as well as perturb geomagnetic fields. To understand space environments near the Earth being influenced by the Sun, we must study about the magnetosphere ...
Yoo Surn Pyo, Hwang-Jae Rhee, Min-Geun Kim, Eunhwa Kim, Sung-Hee Song, Jinny Lee, Dong-Hun Lee   +6 more
doaj  

An Improved Aeromagnetic Compensation Method Robust to Geomagnetic Gradient

Applied Sciences, 2022
Aeromagnetic surveys play an important role in many fields, for example, archaeology, anti-submarine warfare, and geophysical exploration. Being in the geomagnetic field, the aircraft generates a great deal of magnetic interference, resulting in bad ...
Yongqiang Feng, Qimao Zhang, Yaoxin Zheng, Xiaodong Qu, Fang Wu, Guangyou Fang   +5 more
doaj   +1 more source

Mapping of steady-state electric fields and convective drifts in geomagnetic fields – Part 2: The IGRF [PDF]

Annales Geophysicae, 2016
A method of mapping electric fields along geomagnetic field lines is applied to the IGRF (International Geomagnetic Reference Field) model. The method involves integrating additional sets of first order differential equations simultaneously with ...
A. D. M. Walker
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   +4 more sources

Study on Long-Term Variation Characteristics of Geomagnetic Cutoff Rigidities of Energetic Protons Caused by Long-Term Variation of Geomagnetic Field

Frontiers in Earth Science, 2022
As a parameter that quantitatively measures the shielding effect of the Earth’s magnetic field on energetic particles, the geomagnetic cutoff rigidities will change significantly with the long-term change of geomagnetic field.
Wei Chu, Yanyan Yang, Song Xu, Gang Qin , Jianping Huang, Zhima Zeren, Xuhui Shen   +6 more
doaj   +1 more source