物探与化探Issue(3)：567-571,5.DOI:10.11720/wtyht.2015.3.22
CSAMT 中 Ex 视电阻率与 Ex/Hy 比值视电阻率的对比
A comparative analysis of Ex apparent resistivity and Ex/Hy ratio apparent resistivity in CSAMT
摘要
Abstract
Currently, the adoption of the ratio of electric field and magnetic field to calculate the Cagniard resistivity is widely used in traditional CSAMT exploration. However, an analysis of the electromagnetic field components and the apparent resistivity definition method in homogeneous half space and layered media indicates that the apparent resistivity defined by electric field Ex component can improve the problem of the near zone distortion of ratio apparent resistivity. Moreover, the advantage of apparent resistivity defined Ex component has been further verified by the measured field data. Therefore it's not necessary to rigidly stick to using the ratio apparent resistivity in the field CSAMT data acquisition, and the acquisition mode flexibility can be adjusted according to actual conditions so as to improve work quality and efficiency.关键词
CSAMT/电场Ex分量/Ex/Hy比值视电阻率/卡尼亚视电阻率/水平层状介质模型/近区畸变Key words
CSAMT/electric field component Ex/Ex / Hy ratio apparent resistivity/comparison/Cagniard resistivity/horizontal layered media model/near zone distortion分类
天文与地球科学引用本文复制引用
万伟,唐新功..CSAMT 中 Ex 视电阻率与 Ex/Hy 比值视电阻率的对比[J].物探与化探,2015,(3):567-571,5.基金项目
国家自然科学基金项目（41274115，41274082，41404087）；国家重点基础研究发展计划（“973”计划）项目（2013CB228605）；中石油创新基金项目 （）
