Study on Numerical Calculation Methods of Transient Electromagnetic All-Time Apparent Resistivity
详细信息
- 责任者：Guo Songwei (College of Information Engineer ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Xuben
- 刊名：Computing Techniques for Geophysical and Geochemical Exploration
- 出版年：2010
- 卷期：32(5)
- 关键词：瞬变电磁法 ; transient electromagnetic methods
- 页码：p.500-507,455
- 图表：14 illus., 13 refs.
- 分类号：1600
- issnNo：ISSN1001-1749
- isbnNo：CN51-1242/P
摘要
In this paper,the definition of all-time apparent resistivity is introduced for central-loop transient electromagnetic method in homogeneous half-space.Three numerical calculation mehtods have been studied.Especially by using time segmentation calculation,the non-uniqueness of all-time apparent resistivity solution has been solved,and the method of binary-search is also introduced to solve the inverse function of implicit function.A comparison and analysis has been carried out for the three numerical calculation methods through forward modeling and smoke loop inversion,and it would play an important role in revealing the vertical variations of rock-electrical layer of the qualitative interpretation of transient electromagnetic data.