| 电磁法测量的地形影响及校正方法 |
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| 引用本文： | 王志宏,山科社.电磁法测量的地形影响及校正方法[J].物探与化探,2011,35(3):364-367. |
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| 作者姓名： | 王志宏 山科社 |
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| 作者单位： | 核工业航测遥感中心,河北,石家庄,050002 |
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| 摘 要： | 针对地形对电磁测量结果的影响,设计了一组带地形模型,采用有限差分法对其进行了正演模拟计算。对模拟结果进行了分析,总结了地形对电磁测量视电阻率的影响规律,即TM模式比TE模式易受地形影响,山顶比山谷易受地形影响。在此基础上,分析了常用地形校正方法的优缺点;理论模型和实测资料反演结果表明带地形的二维联合反演可有效消除地形影响。
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| 关 键 词： | 电磁法 地形影响 地形校正 带地形联合反演 |
EFFECTS AND CORRECTION OF TOPOGRAPHY IN MAGNETOTELLURIC SOUNDING |
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| WANG Zhi-hong,SHAN Ke-she.EFFECTS AND CORRECTION OF TOPOGRAPHY IN MAGNETOTELLURIC SOUNDING[J].Geophysical and Geochemical Exploration,2011,35(3):364-367. |
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| Authors: | WANG Zhi-hong SHAN Ke-she |
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| Institution: | WANG Zhi-hong,SHAN Ke-she(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,China) |
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| Abstract: | A model with topography was designed.Using the finite difference method,the authors studied the effects of topography on the apparent resistivity and phase curve of MT.Through an analysis and study of distortion curves of simulating models,a number of useful conclusions have been reached.It is shown that the apparent resistivity of TM mode is more easily affected by terrain than that of TE mode,and is more easily distorted at the top than on the bottom of a hill.Meanwhile,theoretical model and real data pro... |
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| Keywords: | magnetotelluric method topography distortion topography correction two-dimensional inversion |
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