The Main Characteristic of Wide-Field Electromagnetic Method
详细信息
- 责任者：Bao Lizhi (Chemical Geological Exploration Institute of Hunan ; Changsha 410004 ; China)
- 刊名：Guizhou Geology
- 出版年：2013
- 卷期：30(1)
- 关键词：可控源音频大地电磁法 ; controlled-source audio magnetotelluric methods
- 页码：p.9-13
- 图表：illus., 11 refs.
- 分类号：1600
- issnNo：ISSN1000-5943
- isbnNo：CN52-1059/P
摘要
Wide-field electromagnetic method(WFEM) is a new artificial current source frequency domain electromagnetic prospecting method proposed by Academician HE Ji-shan in 2010.In same conditions,WFEM has a series advantages compared with CSAMT,such as the area where be effectively measured is wider,the measured signal is stronger and accurate,WFEM is more sensitive to change of underground resistivity so it can more truly report the change of underground resistivity,only one electrical field component Ex is need to measure then extract apparent resistivity by means of computer iteration,its equipment is more portable and it is more effective in the field,etc. For beneficial to popularize and use of WFEM,its main characteristics are introduced in this paper.
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