A study on pseudo-abnormality of all-time apparent resistivity for transient electromagnetic method
According to the expression of field in infinite homogeneous half-space, for transient electromagnetic method, the paper introduced the numerical method of all time apparent resistivity and smoke loop inversion. At the same time phenomenon of pseudo-abnormality was researched and analyzed which is of all time apparent resistivity. Theoretical data forwarded from typical layer model was used to test the validity of method of all time apparent resistivity, such as two, three and five layer models. The results show that the pseudo-abnormality is characterized by high resistivity, a defect of information is caused when try to find a low resistance body during the exploration, and pseudo-abnormality only present from early time to middle time during the transition, whereas there is no pseudo-abnormality in other times. Based on the character of pseudo-abnormality, it is proposed a method to eliminate pseudo-abnormality of all time apparent resistivity, smoke loop inversion was used to analyze the effect on inversion image from pseudo-abnormality which was eliminated by interpolation. The processing results of theoretical data were demonstrated at the end.
transient electromagnetic all time apparent resistivity pseudo-abnormality
Kai Zheng Xuben Wang Songwei Guo Bin Li
College of information Engineering, Chengdu University of Technology, Chengdu Sichuan 610059, China College of information Engineering, Chengdu University of Technology,Chengdu Sichuan 610059, China College of information Engineering,Chengdu University of Technology, Chengdu Sichuan 610059, China
国际会议
成都
英文
524-528
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）