Two-dimensional magnetotelluric inversion in combination of smoothest model and sharp boundary

摘要：

How to get the rapid and stable inversion results and the clear geological interfaces is a focus problem in current Magnetotelluric (MT) inversion. With the purpose to represent clear boundary with resistant discontinuity, the paper integrates the ideas of smoothest model inversion and sharp boundary inversion (SBI) to construct a new objective function for inversion by using the minimum gradient support functional and conjugate gradient inversion method to solve the optimal minimum. So the 2D MT inversion based on smoothest model and sharp boundary is fulfilled.Through the model tests and comparisons, this method is proved accurate in determining sharp electrical interfaces based on the smoothest and stable models. It is also applied to process the field observed MT data in the regions of Guangdong Xuwen, the results indicate this methods effect and feasibility.

关键词： Magnetotelluric (MT) OCCAM inversion smoothest model sharp boundary

作者: ZHANG Luolei YU Peng WANG Jialin WU Jiansheng

作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai, 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: 499-503

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）