摘要
CSAMT方法在地下近地表存在电性横向不均匀时,在双对数坐标系中视电阻率曲线会出现沿着视电阻率轴平行移动的现象,称之为静态效应.静态效应对深部电性结构处理解释结果影响重大,需对其进行合适的校正.本文介绍了目前通常使用的几种静态校正方法,并且分析了各方法的优缺点.在新疆某地进行的CSAMT铜矿勘探中,应用了曲线平移法进行静态校正,取得了较好的效果.
When there is small-scale lateral shallow electric inhomogeneous blocks beneath the surface, there is a phenomena in CSAMT called static shift. The apparent resistivity would parallel move along the axis of apparent resistivity in the log-log coordinate. The static shift affects the qualitative and quantitative interpretation of CSAMT. To solve this problem some methods have been introduced to correct the apparent resistivity data in this paper. The ad vantages and disadvantages of these methods have been discussed here. At last an example of static correction has been given uses which curve moving method to the data of the covellite exploration in XinJiang province. It shows the method is more effective.
出处
《地球物理学进展》
CSCD
北大核心
2006年第4期1290-1295,共6页
Progress in Geophysics
基金
中国科学院知识创新工程重要方向性项目(KZCX3-SW-134)
国家重点基础研究发展规划(973)项目(2002CB412702)资助
关键词
CSAMT
静态校正
工程应用
CSAMT, static correction, application on covellite exploration
