Application of Audio-frequency Magnetotelluric Method in Geothermal Exploration in Chongqing
The audio-frequency magnetotelluric method has the characteristics of lightweight equipment,large exploration depth,and strong terrain adaptability,and is suitable for geothermal exploration in mountainous areas.The geothermal resources of Fenghu Xianshan in Bishan,Chongqing are located on the eastern wing of the Libixia anticline structure and are controlled by the anticline structure,lithology,and topography.Based on this,audio-frequency magnetotelluric method was carried out in the research area,and the corresponding strata and hidden fault structures were explained using resistivity inversion profiles.The interpretation conclusion is highly consistent with the drilling data in the area,indicating that the audio-frequency magnetotelluric method has a significant effect on geothermal exploration of carbonate rocks in mountainous areas.
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