中文摘要：

在大地电磁数据一维反演方法中,用简单的层状模型来描述地下介质的电性分布是不符合实际情况的,模型空间对比法就是基于对模型的直接修改而不是参数的修改来做的反演。这种方法不仅避开了灵敏度矩阵和线性方程组的求解,进而提高了运算速度,并且能够更真实的逼近实际模型。本文阐述了模型空间对比法的基本原理,通过理论模型进行了验证,得到了较好的效果,对庐枞矿集区进行了连续介质的反演,得到了合理的解释。

英文摘要：

In the magnetotelluric inversion method,it is not appropriate to describe the distribution of the stratum medium with a simple layer model. The model space method is based on modifying the model directly instead of modifying the parameters for inversion. This method avoids the solution of the sensitivity matrix and the linear equations, which can improve the computing speed, and can clearly approach the actual model. The paper describes the model space method, constructs two typical theoretical models to testify the method. Then this method is applied to Lujiang--Zongyang ore and a good result is a- chieved.