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| Forward modeling of MT tipper based on 3D complex anomalous body model |
TIAN Yu1,2( ), YUE Biao3() |
1. Guizhou Geological Survey, Guiyang 550000, China
2. Guizhou Engineering Research Center for Geological Development and Application, Guiyang 550000, China
3. Zhengye Engineering & Investment Incorporation Ltd., Guiyang 550000, China |
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Abstract Tipper is very sensitive to the lateral inhomogeneity of the geoelectric structure and can be used to characterize the complex structure. In this paper, based on the three-dimensional complex anomalous body model of magnetotelluric sounding, the formula for calculating the three-dimensional tipper is derived according to the definition of the dump, and three-dimensional anomalous volume models with different combinations are constructed for forward modeling. Forward modeling studies show that the tipper data better reflect the abnormal body boundary, and it is also more accurate to reflect the boundary of several abnormal bodies, whereas the low resistivity body sensitively reflects a high resistance abnormal body. The study of tipper data further explains the characteristics and laws of tipper data and provides a theoretical basis for the application of tipper data.
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Received: 25 September 2020
Published: 20 August 2021
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Corresponding Authors:
YUE Biao
E-mail: 873885918@qq.com;412479420@qq.com
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Different planes of three-dimension low resistivity abnormal body model
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Section diagram of low resistivity abnormal body model with tipper response in the XY plane at F=0.1 Hz
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Section diagram of low resistivity abnormal body model with tipper response in the XZ plane at F=0.1 Hz
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Section diagram of low resistivity abnormal body model with tipper response in the YZ plane at F=0.1 Hz
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Different planes of three-dimension left and right combination abnormal body model
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Section diagram of left and right combination abnormal body model with tipper response in the XY plane at F=0.1 Hz
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Section diagram of left and right combination abnormal body model with tipper response in the XZ plane at F=0.1 Hz
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Section diagram of left and right combination abnormal body model with tipper response in the YZ plane at F=0.1 Hz
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Different planes of three-dimension upper and lower combination abnormal body model
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Section diagram of upper and lower combination abnormal body model with tipper response in the XY plane at F=0.1 Hz
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Section diagram of upper and lower combination abnormal body model with tipper response in the XZ plane at F=0.1 Hz
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Section diagram of upper and lower combination abnormal body model with tipper response in the YZ plane at F=0.1 Hz
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