【摘 要】
:
The inversion of TEM data, using the observed magnetic fields instead of that of apparent resistivities data in this paper, avoids the errors caused by the defi
【机 构】
:
Department of Earth Science,Lanzhou Institute of Seismology
【基金项目】
:
the previous Ministry of Coal Industry and Gansu Sciences Technology Committee
论文部分内容阅读
The inversion of TEM data, using the observed magnetic fields instead of that of apparent resistivities data in this paper, avoids the errors caused by the definition of the apparent resistivity. The inversed results by fitting the magnetic fields of the transmitter sources image with the observed magnetic fields are relalively less affected by the conductivity inhomogeneity. The MT apparent curve is calculated on the basis of the conductivity model constructed from the TEM inversion results. This curve is used as a reference curve for the correction of MT static shift, which makes the correction more reliable.Meanwhile, the domain transformation is also achieved from time to frequency between the two kinds of electromaguetic data. Therefore, the correction of the MT static shift is actualized using TEM inversion method, The corresponding application research shows that this method is very effective for the identification and correction of the MT static shift.``
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