物探化探计算技术Issue(4)：385-388,4.DOI:10.3969/j.issn.1001-1749.2014.04.01
直流电阻率测深二维自适应正则化反演
Two-dimensional self-adaptive regularization Inversion for DC resistivity data with active constraint balancing
柳建新 1彭艳华 2刘海飞 1孙丽影2
作者信息
- 1. 中南大学 地球科学与信息物理学院，长沙 410083
- 2. 有色资源与地质灾害探查湖南省重点实验室，长沙 410083
- 折叠
摘要
Abstract
The determination of a suitable regularization parameter is necessary to achieve both resolution and stability in process of DC resistivity sounding inversion of two-dimension.In this paper,we present an inversion scheme for DC resistivity data u-sing self-adaptive regularization parameter with Active Constrained Balancing (ACB)approach.The regularization parameter varies spatially according to the spread function and is related to both the model parameters resolution matrix and the iteration number.The ACB approach assigns a higher value of regularization to low resolution.The varying regularization parameter ob-tained with the ACB approach is used to balance between the norm of data misfit and the norm of the model.The synthetic tests show that the inversion scheme with the ACB approach performs stable and convergence,and the inversion results can reflect accurately the subsurface geology structure.关键词
直流电阻率反演/自适应/主动约束平衡/正则化因子/模型分辨矩阵/展布函数Key words
inversion of direct current resistivity/self-adaptive/active constraint balancing/regularization parameter/model parameter resolution matrix/spread function分类
天文与地球科学引用本文复制引用
柳建新,彭艳华,刘海飞,孙丽影..直流电阻率测深二维自适应正则化反演[J].物探化探计算技术,2014,(4):385-388,4.
