摘要
本文向读者介绍Macnae和Irvine 1988年提出的感应源电阻率(ISR)法和感应源激发极化(IIp)法。这些方法用一个不接地的大回线发射系统作为电场源并用一个接地电场接收机测量地中感应的电场。同常规的电阻率法和激发极化法相比较,ISR法和IIP法的主要优点是晚延时的感应初始场电平与大地绝对导电性无关,随深度减小缓慢并不受覆盖层导电性影响。
This paper introduces readers to the inductive source resistivity (ISR) method and the inductive source induced polarization (IIP) method developed by Macnae and Irvine in 1988. In these methods,a large ungrounded loop transmitter system is used as the electric field source and the electric field induced in the ground is measured with a grounded electric field receiver. Compared with conventional resistivity methds and induced polarization methods,the fundamental advantage of ISR and IIP methods is that the induced primary electric field level at late delay time is independent of absolute ground conductivity, decreases very slowly with depth and is unaffected by the conductivity of the overburden.
出处
《地质科技情报》
CAS
CSCD
北大核心
1990年第1期104-108,共5页
Geological Science and Technology Information
