Audio magnetotelluric referred to AMT, as an magnetotelluric method , it is applied to the shallow-depth geophysical exploration. The probing depth is generally within 2000m. And it is an effective means of geophysical exploration. But the static effects is a difficult issue of the magnetotelluric method, it cause more trouble for data processing. This paper describes the basic principles of magnetotelluric method and the mechanism of Static Effects. And we discuss the different techniques in the static calibration. The paper takes a geophysical exploration of a carlin-type gold deposit in the west of Guizhou province for instance to introduce the Static Calibration s use in the data processing of AMT.%音频大地电磁测深,简称AMT(Audio Magnetotelluric),作为大地电磁勘探方法的一种,适用于中浅层地球物理勘查,探测深度一般在2 000m之内,是一种有效的地球物理勘探方法.但静态效应是电磁方法中较为棘手的一个问题,为数据资料的处理带来了极大地不便.这里简要阐述大地电磁方法基本原理和静态效应产生的机理,并对不同的静态校正技术进行论述.同时还介绍了该技术在黔西南卡林型金矿的具体应用及应用效果,结果表明,该技术较好地克服了静态效应所带来的影响.
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