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Calculations and analyses of the geomagnetic field models for East Asia

文献类型：期刊论文

作者An, ZC; Rotanova, NM
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2002
卷号45期号:1页码:34-41
关键词geomagnetic field residual geomagnetic field Taylor polynomial model spherical cap harmonic model East Asia region
ISSN号0001-5733
文献子类Article
英文摘要Using the geomagnetic data from repeat stations and observatories of China, former Soviet Union and Mongolia, the Taylor polynomial models and spherical cap harmonic models are calculated for both the geomagnetic field ( X, Y, Z) and the residual geomagnetic field (DeltaX, DeltaY, DeltaZ) over Ease Asia. The geomagnetic charts and residual charts are drawn. The origin point of Taylor polynomial expansion is at 45degreesN and 100degreesE, the turncation level of Taylor polynomial models is 7. The root mean square (RMS) deviations of Taylor polynomial models of the geomagnetic field are respectively 133.0nT, 107.4nT and 148.0nT for X, Y and Z. The RMS deviations of the residual field are respectively 133.8nT, 108.3nT and 144.9nT for DeltaX, DeltaY and DeltaZ. In the spherical cap harmonic model the pole is at 45degreesN and 100degreesE, and the half-angle is 42degrees, the truncation index is 10. The RMS deviations of the residual geomagnetic field for the spherical cap harmonic model are respectively 131.2nT, 112.6nT and 138.7nT for DeltaX, DeltaY and DeltaZ, while those of the geomagnetic field are respectively 134.6nT, 112.7nT and 141.1nT for X, Y and Z. The comparisons between Taylor polynomial models and spherical cap harmonic models are made. The criteria to decide the truncation order of the regional models are discussed.
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000173551600005
出版者SCIENCE CHINA PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/77669]  
专题中国科学院地质与地球物理研究所
通讯作者An, ZC
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China
2.Russian Acad Sci, IZMIRAN, Troitsk 142092, Russia
推荐引用方式
GB/T 7714		 An, ZC,Rotanova, NM. Calculations and analyses of the geomagnetic field models for East Asia[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2002,45(1):34-41.
APA An, ZC,&Rotanova, NM.(2002).Calculations and analyses of the geomagnetic field models for East Asia.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,45(1),34-41.
MLA An, ZC,et al."Calculations and analyses of the geomagnetic field models for East Asia".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 45.1(2002):34-41.

入库方式： OAI收割

来源：地质与地球物理研究所

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