论TEM法中的IP效应

来源期刊：中南大学学报(自然科学版)1998年第3期

论文作者：王隆平 温佩琳

文章页码：8 - 10

关键词：极化体;电阻率; IP效应; TEM法

Key words：induced-polarization body; resistivity; IP effect; TEM method

摘    要：根据EM-37瞬变电磁系统中心感应回线装置下的野外实测数据,并结合前人的研究成果,详细讨论了极化体电阻率与埋深、发射线框尺寸与位置对IP效应的影响规律;此外,在实践中发现了IP效应的二次反号现象,总结了一套如何削弱或消除瞬变电磁测量中这种激电效应的实用方法技术,具有较大的实用价值.

Abstract: Using the observed dB/dtdata by EM-37 transient electromagnetic system in central-induced loop survey and the previous researching results, this paper has demonstrated induced-polarization effects in negative TEM response. These effects have approximate negative exponential decays which are often observed. It is also possible by using a simple approach to remove negative polarization effects, which is of practical value.