Three-dimensional gravity inversion based on optimization processing from edge detection

作     者：Sheng Liu Shuanggen Jin Qiang Chen Sheng Liu;Shuanggen Jin;Qiang Chen

作者机构：Xinjiang Astronomical ObservatoryChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of SciencesBeijing 100049China Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Remote Sensing and Geomatics EngineeringNanjing University of Information Science and TechnologyNanjing 210044China 

出 版 物：《Geodesy and Geodynamics》 (大地测量与地球动力学（英文版）)

年 卷 期：2022年第13卷第5期

页      面：503-524页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Key Research and Development Program of China Project(Grant No.2018YFC0603502) 

主　　题：Gravity inversion Locally weighted constraint Petrophysical constrain Fuzzy c-means clustering algorithm Open Acc technology 

摘      要：Gravity inversion requires much computation,and inversion results are often *** first problem is often due to the large number of grid *** detection method,i.e.,tilt angle method of analytical signal amplitude(TAS),helps to identify the boundaries of underground geological anomalies at different depths,which can be used to optimize the grid and reduce the number of grid *** requirement of smooth inversion is that the boundaries of the meshing area should be continuous rather than *** this paper,the optimized meshing strategy is improved,and the optimized meshing region obtained by the TAS is changed to a regular region to facilitate the smooth *** the second problem,certain constraints can be used to improve the accuracy of *** results of analytic signal amplitude(ASA)are used to delineate the central distribution of geological *** propose a new method using the results of ASA to perform local constraints to reduce the non-uniqueness of *** guided fuzzy c-means(FCM)clustering algorithm combined with priori petrophysical information is also used to reduce the non-uniqueness of gravity *** Open Acc technology is carried out to speed up the computation for parallelizing the serial program on *** general,the TAS is used to reduce the number of grid *** local weighting and priori petrophysical constraint are used in conjunction with the FCM algorithm during the inversion,which improves the accuracy of *** inversion is accelerated by the Open Acc technology on *** proposed method is validated using synthetic data,and the results show that the efficiency and accuracy of gravity inversion are greatly improved by using the proposed method.