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。

As to forward, emphasis is on analyzing basic equations, boundary conditions and finite-element solutions for magnetotelluric field in two dimension of finite-element forward method.

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由于大地电磁场存在区域噪声，因而，为压制干扰并获得高质量的场源数据，就需进行带远参考方式的数据采集。

The data acquisition of remote reference is used to suppress interference and acquire the high quality data due to the magnetotelluric regional noise.

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大地电磁测深法(MT)是以天然电磁场为场源研究地球内部电性结构的一种重要的地球物理手段。

Magnetotelluric (MT) sounding is an important geophysical means to study the Earth electrical structure using the natural EM field as its source.

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