We present some simple practical 1-d inversion methods, including Bostick inversion method and the method which approximates magnetotelluricfield by direct current field.
As to forward, emphasis is on analyzing basic equations, boundary conditions and finite-element solutions for magnetotelluricfield in two dimension of finite-element forward method.
在正演方面，着重分析了有限元正演方法的基本方程序，边界条件以及二维大地电磁场的有限元解法。
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Magnetotelluric (MT) sounding is an important geophysical means to study the Earth electrical structure using the natural EM field as its source.