航空大地电磁法在辽宁省丹东地区的应用

doi:10.11720/wtyht.2020.1493

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Abstract

This paper briefly introduces the principle of aeromagnetotelluric method, the measurement system, the calculation of tiltepper parameters and the two-imensional and three-dimensional inversion. By using the forward program, the tipplter parameters of the geoelectric model of the transverse electrical interface were calculated. The results show that the tilter data obviously reflect the transverse electrical interface. Finally, combined with the actual geological situation, the distribution characteristics of rock mass and ore-control structure in the area were found by using the measured tilter and inversion resistivity data, and some results were obtained, which verify the feasibility of the method.

Key words： aeromagnetotelluric total divergence total phase rotation tilter inversion

Received: 21 October 2019 Published: 28 August 2020

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	Zhi-Hong WANG
	Min-Zhong JIANG
	Li-Hong PENG
	Sha-Sha CHENG

Cite this article:

Zhi-Hong WANG,Min-Zhong JIANG,Li-Hong PENG, et al. The application of aeromagnetotelluric survey technology to Dandong area, Liaoning Province[J]. Geophysical and Geochemical Exploration, 2020, 44(4): 734-741.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1493 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I4/734

Geoelectric model

Model tipper response section

Simple geology over survey of working area
1—Quaternary;2—Jurassic-Certaceous Xiaoling Group;3—Daixian Group;4—Dashiqiao Group;5—Gaojiayu Group;6—Lieryu Group;7—Cretaceous monzogranite;8—Jurassic monzogranite;9—Triassic monzogranite;10—Paleoproterozoic granite;11—granite porphyry;12—measured normal fault;13—measured reverse fault;14—unknown fault measured;15—lead zinc ore;16—gold mine;17—aeromagnetotelluric line

ZTEM H_z reciver coil

ZTEM H_x-H_y reference coil

Aeromagnetic ΔT and 150 Hz in-phase TD contour
a—ΔT;b—150 Hz TD;1—fracture; 2—rock mass distribution range; 3—aeronautical magnetotelluric survey line

Fig. 6
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Tipper in-phase TD contour
a—300 Hz;b—75 Hz;The legend is the same as that in Fig. 6

Fig. 6
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Tipper in-phase TPR contour
a—300 Hz;b—75 Hz;the legend is the same as that in Fig. 6

Fig. 6
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Resistivity depth slice contour
a—200 m depth;b—1 000 m depth;the legend is the same as that in Fig. 6

Resistivity sections of survey along line L6480

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