| Citation: |
LU Zhanwu, LI Wenhui, ZHANG Xinyan, LI Qiusheng, CAI Yuguo, REN Yanzong, CHENG Yongzhi, WANG Guangwen. A geophysical technology for thematic geological mapping: Short period dense array[J]. Geological Bulletin of China, 2021, 40(1): 1-12.
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A geophysical technology for thematic geological mapping: Short period dense array
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Abstract
Thematic geological mapping driven by the demands and problems emphasizes that for different geological environments such as a major geological body, sedimentary basin, important metallogenic belt and fault system, modern technical means can be adopted to carry out thematic geological investigation and mapping, so as to solve some major problems of above-mentioned geological environments.Geophysics, as one indispensable means in thematic mapping, its short-period dense array technology developed in recent 10 years has attracted much attention due to flexible layout, wide application, high precision and low cost.This paper mainly introduces the current situation of short period dense array, and its application to near surface structure investigation under different geological and geomorphic conditions such as cities, mines, earthquake and sedimentary basins, etc.The application prospect and technical scheme suggestions of its technology in thematic geological mapping is put forward to improve and perfect the method system of thematic geological mapping technology by means of constructing structure imaging method through the investigation of short period dense array.
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References
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LU Zhanwu, LI Wenhui, ZHANG Xinyan, LI Qiusheng, CAI Yuguo, REN Yanzong, CHENG Yongzhi, WANG Guangwen. A geophysical technology for thematic geological mapping: Short period dense array[J]. Geological Bulletin of China, 2021, 40(1): 1-12.
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Figure 1.
Location of the short period dense array in Tangshan fault area
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Figure 2.
The shallow structure observed with short period dense array in Tangshan fault and adjacent area
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Figure 3.
Quaternary sedimentary thickness and basement of Tangshan earthquake area
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Figure 4.
Location of the short period dense array in Chenghai Fault area and shear wave velocity model
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Figure 5.
Location of the short period dense array in Jinan City
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Figure 6.
Section of shear wave velocity model at different depths(100 m, 300 m, 600 m and 1000 m)in Jinan urban area
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Figure 7.
Distribution of seismic array stations and the velocity structure section in Hefei City
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Figure 8.
The Vs structure of Hefei City at depths of 30 m, 50 m, 100 m and 300 m
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Figure 9.
The location of the dense seismic array and shear wave structure in Xinfengjiang Reservoir
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Figure 10.
Location of the seismic array and shear wave velocity structure in Karatungk mine area
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Figure 11.
Joint result of the shallow velocity, topographic data and fault information of the San Jacinto fault area in west coast of the United States