[1]MAO Xianjin,WEN Wen,YANG Lingying,et al.Analysis on Influence Coefficient of MT Apparent Resistivity at Several Sites in Western Yunnan[J].Journal of Seismological Research,2020,43(04):732-737.
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Analysis on Influence Coefficient of MT Apparent Resistivity at Several Sites in Western Yunnan
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 04
Page number:
732-737
Column:
Public date:
2020-09-17
- Title:
- Analysis on Influence Coefficient of MT Apparent Resistivity at Several Sites in Western Yunnan
- CLC:
- P315.721
- DOI:
- -
- Abstract:
- We studied the characteristics of MT apparent resistivity influence coefficients varying with frequency at three sites in Western Yunnan using the stratified homogeneous geo-resistivity structure.The result shows:①The apparent resistivity influence coefficients of each layer vary with the period,we could select the appropriate electromagnetic field frequency band through the influence coefficient value so as to obtain better information on the change of resistivity of the stratum in the earthquake-prone layers; ② In the short period within a certain period,the apparent resistivity mainly reflects the change of the first layer that is susceptible to interference.This period should be avoided for seismic observation,and the periodic value can be determined by influence coefficient analysis; ③ The sum of the influence coefficients of each layer is not a constant but varies with the period.The apparent resistivity observed in different frequency bands has different ability to reflect the variation of the formation resistivity.The influence coefficient analysis has certain guiding significance for the selection of electromagnetic field frequency band and observation site of MT seismic observation.
- References:
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- Similar References:
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Last Update:
2020-09-17