Research on thermal structure and thermal stress of the crust in Bohai Sea and its surroundings |
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| Authors: | Hua Tian and Zhili Zhang |
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| Institution: | (1) Institute of Geophysics, State Seismological Bureau, 100081 Beijing, China |
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| Abstract: | In this paper, the three-dimensional thermal structure and the two-dimensional thermal stress caused by the horizontal inhomogeneity
of the thermal structure in the crust of the Bohai Sea and its surroundings were analyzed using the geothermal and the crust
structural data by means of the finite element method. As resulted, the horizontal distribution of the temperature in the
upper crust is obviously different from that in the lower crust in most part of the region. But the horizontal distribution
of the heat flow is constant in the crust. There is a belt where the thermal structure of the crust is intensely changed around
Tangshan. There are some different characteristics of the thermal stress of the crust around Tangshan, in the North-China
plain, in the Bohai Sea gulf, and in the middle part of the Bohai Sea. Utilizing those results, the distribution features
of the seismic activity in the region were explained in this paper.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,14, 29–35, 1992.
This project is supported by the Chinese Joint Seismological Science Foundation. |
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| Keywords: | thermal structure of crust horizontal inhomogeneity thermal stress finite elements method Bohai Sea and its surroundings |
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