| 计算震磁背景场的数学方法 |
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| 引用本文： | 安振昌.计算震磁背景场的数学方法[J].地震地磁观测与研究,2000,21(5):9-15. |
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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,中国北京 100101 |
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| 摘 要： | 如何计算地磁场 (或地磁剩余场 )及其长期变化的趋势变化 ,是提取震磁异常的关键。文章简要介绍了计算震磁背景场的数学方法 :多项式方法、球冠谐和分析方法、矩谐分析方法和曲面样条函数方法
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| 关 键 词： | 震磁背景场 多项式 球冠谐和分析 矩谐分析 曲面样条函数 |
Mathematical methods to calculate the seismo-geomagnetic background field |
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| An Zhenchang.Mathematical methods to calculate the seismo-geomagnetic background field[J].Seismological and Geomagnetic Observation and Research,2000,21(5):9-15. |
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| Authors: | An Zhenchang |
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| Abstract: | It is very important that how to calculate the seismo geomagnetic background field,and study the anomaly variation of geomagnetic field,or geomagnetic residual field and secular variation field.We can use the methods of polynomial(Taylor and Legendre),spherical cap harmonic analysis,rectangular harmonic analysis and surface spline to derive the seismo geomagnetic background field and extract the geomagnetic anomaly variation associated with earthquake.In this paper,above mathematical methods are introduced. |
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| Keywords: | seismo geomagnetic background field polynomial spherical cap harmonic analysis rectangular harmonic analysis surface spline |
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