Characteristics of 3D TEM response on seafloor with the central loop configuration
Zhao Yue1, Xu Feng1, Li Xiu2, Liu Jinpeng2
1. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100091, China; 2. College of Geology Engineering and Geomatics, Chang'an University, Xi'an, Shaanxi 710054, China
Abstract:This paper shows first our research on transient electromagnetic response characteristics in seafloor,i.e.how the seawater depth,the configuration size and the seafloor conductivity affect TEM response and its resolution.Then,the vector finite element method is used to perform 3D marine mode-ling with the central loop configuration,and the result is verified by 1D analytic solutions.Finally,3D models are designed respectively according to a real deep sea marine mineral exploration and a shallow sea engineering scenario,and the modeling results with 3D vector finite element method agree well with the real models.The modeling results indicate clear boundary of targets.So it is concluded that the central loop TEM method has an acceptable resolution for marine exploration.The work provides a valuable theoretical basis for the optimization exploration design and data processing and interpretation.
赵越, 许枫, 李貅, 刘金鹏. 中心回线海底三维瞬变电磁响应规律分析[J]. 石油地球物理勘探, 2017, 52(5): 1093-1102.
Zhao Yue, Xu Feng, Li Xiu, Liu Jinpeng. Characteristics of 3D TEM response on seafloor with the central loop configuration. OGP, 2017, 52(5): 1093-1102.
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