3D electromagnetic inversion of complex resistivity

摘要：

It is well known that the rock and ore deposits often show their complex nature in resistivity and the complex resistivity generally could be described by Cole-Cole model. The complex resistivity parameters are useful to distinguish the nature of anomaly. In this paper, we first implemented forward calculation of 3D Cole-Cole model with integral equation method for a electrical dipole source, and then we put forward to an algorithm to directly inverse the Cole-Cole parameters. The key point of our algorithm is the derivation of sensitivity matrix which represents the rate of real measurement field to the Cole-Cole parameters. With minimum 4 frequencies and enough observation points, without any assumption for electromagnetic coupling, the numbers of Cole-Cole model and relationship among them, our algorithms can accurately inverse the Cole-Cole parameters of each cell of arbitrary 3D model.

关键词： 3D Electromagnetic complex resistivity inversion Cole-Cole Model

作者: LI Tonglin LIN Pinrong ZHANG Hui LI Jianping

作者单位: JiLin University, Changchun, China Institute of Geochemistry and Geophysics of Chinese Geological Science Academy, langfang, China

会议类型: 国际会议

会议名称: The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)

会议地点: 北京

会议语种:英文

页码: 624-629

在线出版日期: 2008-10-23（万方平台首次上网日期，不代表论文的发表时间）