| 卫星磁异常的理论模型 |
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| 引用本文： | 安振昌.卫星磁异常的理论模型[J].地球物理学进展,2000,15(2):54-62. |
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| 作者姓名： | 安振昌 |
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| 作者单位： | 中国科学院地质与地球物理研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金资助项目!( 49774 2 1 9,,4 973 4 1 4 0 ) |
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| 摘 要： | 本文介绍了计算卫星磁异常理论模型的数学方法 ,即球谐分析方法、冠谐分析方法、矩谐分析方法和等效源方法 .根据相同的 MAGSAT资料 ,计算的卫星磁异常冠谐模型、矩谐模型和等效源模型都能很好地表示卫星磁异常的分布 .由于在整个研究区域 ( 1 0°N～60°N,70°E～ 1 40°E)都有卫星资料 ,所以这些理论模型没有所谓的“边界效应”.这一结论对计算地磁场的区域模型是很有意义的 .
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| 关 键 词： | 卫星磁异常 球谐分析 冠谐分析 理论模型 |
| 文章编号： | 1004-2903(2000)02-0055-08 |
| 修稿时间： | 1999-12-01 |
THEORETICAL MODELS OF SATELLITE MAGNETIC ANOMALIES |
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| AN Zhen-chang.THEORETICAL MODELS OF SATELLITE MAGNETIC ANOMALIES[J].Progress in Geophysics,2000,15(2):54-62. |
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| Authors: | AN Zhen-chang |
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| Institution: | AN Zhen-chang
(Institute of Geology and Geopysics, Chinese Academy of Sciences. Beijing 100101 China) |
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| Abstract: | The mathematical methods to calculate the theoretical models of satellite magnetic anomalies, spherical harmonic analysis, spherical cap harmonic analysis, rectangular harmonic analysis and equivalent source method, were introduced in this paper The spherical cap harmonic, rectangular harmonic and equivalent source models of satellite magnetic anomalies which derived from the same Magsat data can best express the distribution of the satellite magnetic anomalies Because there were satellite data in the whole studied region, so these theoretical models have no called "boundary effect" , this conclusion is very significant for calculating the regional models of the geomagnetic field |
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| Keywords: | Satellite magnetic anomaly Spherical harmonic analysis Spherical cap harmonic analysis Rectangular harmonic analysis Equivalent source method |
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