The Reason for the Somewhat Lower TEM Observation Resistivity in Near-Region of Magnetic Source
详细信息
- 责任者：Wang Qingyi (Institute of Geology for Mineral Resources ; Beijing 100012 ; China) ; Jiang Bin
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2012
- 卷期：36(3)
- 关键词：瞬变电磁法 ; transient electromagnetic methods
- 页码：p.392-395
- 图表：1 illus., 4 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
This paper discusses the reason why the TEM observation resistivity is lower or much lower than actual resistivity.It is caused by the additional effect of the electric field coupling between the transmit coil and the receiving coil during the time of power supply.This effect becomes a strong background values in the measurement of the transient potential.This paper gives the method and measures for eliminating (or weakening) this field interference
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