世界核地质科学2025，Vol.42Issue(3)：565-581,17.DOI:10.3969/j.issn.1672-0636.2025.03.008
可控源音频大地电磁法和微动谱比法的横向约束联合反演
Laterally constrained joint inversion of CSAMT and microtremor spectrum method
摘要
Abstract
In order to make the distribution of lateral physical properties and layer parameters between adjacent measuring points smoother and more continuous and reduce the limitations of a single geophysical inversion method,a pseudo-two-dimensional lateral constrained joint inversion study of controlled source audio frequency magnetotelluric method(CSAMT)and micro-motion spectrum ratio method was carried out.The microtremor data is numerically simulated using the spectral ratio method,combined with the CSAMT-based limited memory BFGS(L-BFGS)inversion algorithm,introducing the lateral constraint theory,and adding the cross-gradient function to achieve the mutual coupling of two different physical parameters.A set of quasi-two-dimensional lateral constraint joint inversion algorithms was developed,and the accuracy and effectiveness of the algorithms were verified through two sets of theoretical models.Meanwhile,the inversion algorithm is used to invert the measured data in Yanqing,Beijing.The results show that there is a good correspondence between the abrupt interface morphology of resistivity and shear wave velocity,which proves the practical value of the laterally constrained joint inversion algorithm.关键词
可控源音频大地电磁法/微动/横向约束/联合反演Key words
controlled source audio magnetotelluric method/microtremor/laterally constraint/joint inversion分类
天文与地球科学引用本文复制引用
王崇龙,彭淼..可控源音频大地电磁法和微动谱比法的横向约束联合反演[J].世界核地质科学,2025,42(3):565-581,17.基金项目
国家自然科学基金项目(编号:42174086)资助 Supported by National Natural Science Foundation of China(No.42174086) （编号:42174086）
