二维MT多尺度反演中的自适应网格算法  

An adaptive-grid algorithm in 2-D magnetotelluric multiresolution inversion

作　　者：徐义贤[1] 王家映[1] 

机构地区：[1]中国地质大学,武汉430074

出　　处：《石油物探》1998年第4期112-121,共10页Geophysical Prospecting For Petroleum

摘　　要：针对MT二维反演中采用规则网格剖分时，网格过粗，分辨率低；网格过细，反演不稳定，反演结果易产生假象等问题，本文提出一种自适应网格方法以克服传统的规则剖分方法之不足。数值例子表明该算法精度高，稳定性好，值得做进一步的研究。When using regular grids in 2-D rnagnetotelluric (MT) inversion, the coarser the grid, the lower the resolution, and the finer the grid, the worse the inversion stability. In the paper we present an adaptive-grid algorithm to overcome the drawback of the traditional regular gridding method. The numerical examples show that the algorithm has high precision and good stability and is worthy of further research.

关 键 词：自适应网格 大地电磁 反演 算法 电磁法勘探 

分 类 号：P631.34[天文地球—地质矿产勘探]