复杂地形条件下大地电磁二维正反演研究  

Two dimensional forward and inverse modeling of magnetotelluric with complex topography

作　　者：何凯 唐新功[1,2] 田刚[1,2] 龚伟成 马力 

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]长江大学地球物理与石油资源学院,湖北武汉430100

出　　处：《能源与环保》2017年第12期4-7,共4页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金项目(41674107;41274115;41574064);国家重点基础研究发展计划973项目(2013CB228605)

摘　　要：为了研究地形起伏对野外勘探结果的影响,对不同地形条件下地质模型进行正演模拟并进行反演计算,分析大地电磁在不同地形条件下的勘探效果。设计了均匀半空间、层状半空间下的各种地形的正演地质模型,并进行反演计算,得到对应的反演剖面图。对比计算结果发现,无论在均匀半空间还是在层状半空间,地形起伏对勘探结果均会造成影响。In order to study the effects of topography on field exploration results,forward modeling and and inversion calculation were carried out for the geological model in different conditions,result of magnetotelluric exploration in different terrain conditions was also analysed.In this paper,the forward geological models of various terrains in homogeneous half space and layered half space were designed,and the inversion sections were obtained by inversion calculation.The results of comparative calculation show that the fluctuation of topography affects the exploration results both in the homogeneous half space and in the layered half space.

关 键 词：大地电磁 复杂地形 二维正演 二维反演 均匀半空间 层状半空间 

分 类 号：P318.62[天文地球—固体地球物理学]