Magnetotelluric responses of a vertical inhomogeneous and anisotropic resistivity structure with a transitional layer

Magnetotelluric responses of a vertical inhomogeneous and anisotropic resistivity structure with a transitional layer
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具有过渡层的垂直非均匀各向异性电阻率结构的大地电磁响应

DOI:
10.1007/s40328-022-00373-9
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发表时间:
2022-01
影响因子:
1.4
通讯作者:
Weifen Ding
Weifen Ding
中科院分区:
地球科学4区
文献类型:
--
作者:
Linjiang QIN;Changfu YANG;Weifen Ding

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研究了具有过渡层的垂直非均匀各向异性电阻率结构的理论大地电磁响应,其中电阻率是深度的线性函数。计算了地球模型表面切向电场和磁场的表达式以及相应的阻抗。详细讨论了各向异性倾角、各向异性系数、电阻率对比以及过渡层厚度等模型参数对视电阻率和阻抗相位的影响。结果以视电阻率和阻抗相位曲线的形式以图形方式示出,它们可用于解释某些特定地质情况下的大地电磁测深数据。
The theoretical magnetotelluric responses of a vertical inhomogeneous and anisotropic resistivity structure with a transitional layer in which the resistivity is a linear function of depth are investigated. The expressions of the tangential electric and magnetic fields at the surface of the Earth model and the corresponding impedance have been evaluated. The influence of some model parameters such as the anisotropic dipping angles, the anisotropic coefficients and the resistivity contrast as well as the thickness of the transitional layer on the apparent resistivity and impedance phase are treated in detail. The results are graphically illustrated in the form of apparent resistivity and impedance phase curves, and they may be used in the interpretation of magnetotelluric sounding data in some specified geologic situations.
DOI: 10.1016/0016-7142(69)90013-1
发表时间: 1969-03
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