摘要
大地电磁测深研究中,长期以来使用视电阻率和相位作为解释参数,但视电阻率和相位均存在一定的局限性。本文从理论上研究了相位微分的性质,探讨了Bostick电阻率和Cagniard电阻率同相位微分之间的关系,通过实例说明了相位微分的使用方法。结果表明,一维和二维TM模式的相位微分是一个很好的参数,对H型模型和A型模型都能得到较准确的地质体参数。
In MT, apparent resistivity and phase have been used as interpretative parameter for a long time. However, apparent resistivity and phase have some limitations. Ranganayaki suggested that underground electric structures are described by phase-derivative. In the paper, behavior of phase-derivative is studied. Relationship between Bostick resistivity and Cagniard resistivity and phase-derivative is provided by examples. It is pointed out that 1D and 2D TM phase-derivative is a useful parameter. The parameter of structures, whether H model or A model, can be derived.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第S1期209-218,共10页
Chinese Journal of Geophysics
基金
国家自然科学基金
大庆石油管理局联合资助项目(49894190-31)
关键词
电阻率
阻抗相位
相位微分
解释参数
Resistivity, Impedance phase, Phase-derivative, Interpretative parameter.
