3-D Inversion of Crustal Structure in Frequency of Gravity

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Liu, Weihua^1 ; Fang, Chao^1 ; Wu, Guiju^2

School of Electric and Electronic Engineering, Wuhan Polytechnic University, Wuhan, China^1

Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan, China^2

关键词: 3-d inversions;    3-dimensional;    Crustal structure;    Earth models;    Gravity anomalies;    Gravity inversions;    Large scale data;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022035/pdf
DOI  :  10.1088/1755-1315/170/2/022035

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This work introduces a geologically based approach for calculation the gravity anomaly of 3-dimensional(3-D) earth model. The geologically driven earth model is decomposed into a 3-D grid and the gravity signature for different depth is calculated respectively. The results of gravity inversion are well, but when the boundary is near to 200Km, the results are very different. And as the depth increasing, the results are very similar. That is to say, the absolute depth is not sensitive for gravity inversion. In terms of the results of inversion, increasing the number of points and computing large-scale data can reduce the effect of boundary.