| 关于大地电磁测深资料反演问题 |
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| 引用本文： | 孙必俊,陈乐寿,王光锷,马涛.关于大地电磁测深资料反演问题[J].地球物理学报,1985,28(2):218-229. |
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| 作者姓名： | 孙必俊 陈乐寿 王光锷 马涛 |
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| 作者单位： | 1. 武汉地质学院北京研究生部;
2. 石油部物探局研究院 |
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| 摘 要： | 大地电磁测深资料二维反演问题,由于迭代过程中用数值方法求解修改模型参数后的地表响应函数,因而需要正演的时间相当长。本文引用快速正演的方法,缩短了迭代过程中正演计算的时间。从理论上将一般的二维（双）三次样条公式做了简化,应用到快速正演方法中,提高了效率。并以模拟的数据,实现了两个参数的反演。文中还就确定初始模型参数进行了探讨。
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| 关 键 词： | 大地电磁测深 资料反演 视电阻率 快速反演 模型参数 三次样条插值 地垒 二维反演 初始模型 地电模型 |
INVERSION OF MAGNETOTELLURIC SOUNDING DATA |
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| SUN BI-JUN,CHEN LE-SHOU,WANG GUAN-GE,MA TAO.INVERSION OF MAGNETOTELLURIC SOUNDING DATA[J].Chinese Journal of Geophysics,1985,28(2):218-229. |
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| Authors: | SUN BI-JUN CHEN LE-SHOU WANG GUAN-GE MA TAO |
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| Institution: | 1. Beijing Postgraduate Department, Wuhan Geological College;
2. Research Institute of Bureau of Geophysical Exploration, Ministry of Petroleum |
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| Abstract: | In the inversion problem of two dimensional magnetotelluric data, computation of magnetotelluric response function with modified model parameters takes a very long forward time due to numerical interative method. A fast forward method is introduced in this paper, which reduces the time of calculating forward problem during iteration. Bicubic spline interpolation is simplified and applied to the fast forward method, thus increasing the calculating speed. Using analogue data, inversion containing two parameters is carried out. Determination of inital model parameters of inversion is also discussed. |
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