剩余视纵向电导比定义——TEM新导出参数△Srtτ及一维直接反演特性

摘要

视纵向电导是瞬变电磁法勘探理论的基本参数之一,在以中心回线装置应用为主的金属物探界很少应用.为改变此状况,创立了剩余视纵向电导比△Srtτ定义及其具体计算方法.△Srtτ是TEM方法中第一个相对参量,大量的模型计算和野外数据试算表明,其效果与视电阻率一维直接反演相当.此计算方法简单且是单解.本参量主要适用于中心回线和重叠回线的中、近带数据处理,略加修改亦适用于其他装置,乃至电偶源装置及磁参数的处理.%The longitudinal conductivity is one of main parameter in TEM method , but it rarely be used in base metal geophysical prospecting due to many causes. In this paper,a new deduced parameter- is defined and its algorism is proposed. Parameter is a first relative value in TEM. A lot of results of modle caculations and measured data processing are as same direct ID inversion as apparent resistivity's. But the caculation is so easy and the solution is unique. AS" could be used in center-near zone for in-loop and coincident loop configuration data processing.