Three-dimensional simulation and test of source effects in CSAMT method
WANG Gang1, YANG Sheng2, LEI Da1, ZHU Wei1, YAO Da-Wei1
1. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;
2. Beijing Zhongse Geophysical Exploration, Co., Ltd., China Nonferrous Metals Resource Geological Survey, Beijing 100045, China
Source effects have serious impact on the application effect of CSAMT. In order to analyze the effect of the source effects, the authors used three-dimensional integral equation numerical simulation method to simulate 3D anomalous body below the source, and then made a field test. Simulations and field tests have proved that, due to the different depths of the bedrocks, only the low band is affected, whereas the high band is almost unaffected, and that the low resistivity body can generate stronger source overprint effects, so the observational data are more remarkably impacted by the low resistivity body.
王刚, 杨生, 雷达, 朱威, 姚大为. CSAMT场源效应的三维模拟与试验[J]. 物探与化探, 2015, 39(1): 132-135.
WANG Gang, YANG Sheng, LEI Da, ZHU Wei, YAO Da-Wei. Three-dimensional simulation and test of source effects in CSAMT method. Geophysical and Geochemical Exploration, 2015, 39(1): 132-135.
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