关键词: 重磁法, 线性反演, 塔里木, 对应分析, 约束

Abstract: Gravimetric and magnetic data are useful to study the deep geologic structures,but interpretation is usually difficult because of the multi-solutions of inversion and complex field geology.We have developed an enhanced technique of constrained simultaneous inversion based on the classical inversion and internal correspondence analysis (ICA) ,which is to weight the object function of simultaneous inversion with relation coefficients of the gravimetric and magnetic data.The theoretical modeling results show that the new technique is helpful to the convergence of iteration.Appliation of this method to the Kuerle-Ruoqiang profile of the Tarimu basin shows that a reasonable initiative model for further optimistic iteration can be established with the help of the information from the ICA.

Key words: Gravimety-magnetic method, Linear inversion, Tarim, Internal correspon-dence analysis, Constraint