Modelling the Earth's magnetic field

被引：0
|
作者：
Barros e Sa, Nuno [1 ]
Faria, Lourenco [2 ]
Alves, Bernardo [2 ]
Cymbron, Miguel [2 ]
机构：
[1] Univ Azores, Inst Marine Sci Okeanos, Rua Prof Doutor Freder Machado 4, P-9901862 Horta, Portugal
[2] Escola Secundaria Domingos Rebelo, Ave Antero Quental, P-9504501 Ponta Delgada, Portugal
来源：
AMERICAN JOURNAL OF PHYSICS | 2022年 / 90卷 / 06期
关键词：
TIME;
D O I：
10.1119/5.0074846
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
The Earth's magnetic field can be decomposed into spherical harmonics, and the exact coefficients of the decomposition can be determined through a few measurements of its value at different locations. Using measurements from a magnetometer on board the International Space Station, we computed the multipolar moments of an expansion in spherical harmonics to order 3, calculated the location of the magnetic dip poles, and produced an intensity map of the magnetic field across the globe. The accuracy of the results was evaluated by comparison with data from the International Geomagnetic Reference Field. (C) 2022 Published under an exclusive license by American Association of Physics Teachers.
引用
收藏
页码：436 / 444
页数：9
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