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The Legendre polynomials modeling method of small-scale geomagnetic fields
Ou Jia-Ming; Du Ai-Min; Xu Wen-Yao; Hong Ming-Hua; Chen Geng-Xiong; Luo Hao; Zhao Xu-Dong; Bai Chun-Hua; Wang Yuan; 北京8701信箱
Department空间科学部
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2012
Volume55Issue:8Pages:2669-2675
ISSN0001-5733
Language中文
KeywordSpatial Resolution Geomagnetic Field Modeling Legendre Polynomials Boundary Effects Least Square Estimation
AbstractBased on ground-based geomagnetic surveys, we propose a small-scale geomagnetic field modeling method using Legendre polynomials. Combined with the data preprocessing techniques and the least squared estimation, a high-degree model is constructed to describe the small-scale structure of the field and draw the geomagnetic field maps. The results of the experiments show that the average misfit of total field intensity between the predicted model and the real observations is less than 30 nT. At the same time, fine structures of the field can be predicted, and the boundary effect is effectively suppressed, which facilitate improvement of modeling of the geomagnetic field. We also discuss the advantage and shortage of this modeling technique and its application scope. It is of great significance for application of the geomagnetic field to space exploration, minerals prospecting and subsurface structure probing.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3193
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Ou Jia-Ming,Du Ai-Min,Xu Wen-Yao,et al. The Legendre polynomials modeling method of small-scale geomagnetic fields[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(8):2669-2675.
APA Ou Jia-Ming.,Du Ai-Min.,Xu Wen-Yao.,Hong Ming-Hua.,Chen Geng-Xiong.,...&北京8701信箱.(2012).The Legendre polynomials modeling method of small-scale geomagnetic fields.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(8),2669-2675.
MLA Ou Jia-Ming,et al."The Legendre polynomials modeling method of small-scale geomagnetic fields".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.8(2012):2669-2675.
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