物探与化探Issue(1)：120-124,5.DOI:10.11720/j.issn.1000-8918.2014.1.22
E-Eφ、E-Ex 广域视电阻率对比与应用
A NEW APPARENT RESISTIVITY OF WIDE FIELD ELECTROMAGNETIC DEFINED BY E-Eφ & E-Ex COMPONENT
摘要
Abstract
Using the electromagnetic fields of a horizontal electric dipole electric component expression, this paper discussed the Ex and Eφ components which have different amplitude ranges, and propose a new apparent resistivity of wide field electromagnetic defined by Eφ component. The authors also studied the characteristics of the apparent resistivity of wide field. Under the condition of the homogene-ous half space, the measurement of Eφ components can expand the field observation sector and reduce the construction cost. Through studying the two-layer model of the forward theoretical curves, the authors have found that the wide field apparent resistivity defined by Eφ component has much smaller observation angle than Ex mode, corresponding to the observed sector where no apparent resistivity curve distortions occur. By calculating apparent resistivity defined by wide field Eφcomponent of type H and type K model, the authors have found that wide field electromagnetic method is more sensitive to low resistance. The numerical results show that the wide field e-lectromagnetic method also has the near-zone.关键词
广域电磁法/Eφ视电阻率/E-Eφ装置Key words
wide field electromagnetic method/Eφ apparent resistivity/E-Eφ array分类
天文与地球科学引用本文复制引用
王启,王宏宇,程党性..E-Eφ、E-Ex 广域视电阻率对比与应用[J].物探与化探,2014,(1):120-124,5.基金项目
国家自然科学基金项目 （）
