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Sun Shaobo, Chen Shi, Gong Lizhuo, Xu Weimin. 2018: Crustal isostasy model and strong earthquakes in the Tibetan Plateau and its surroundings. Acta Seismologica Sinica, 40(3): 341-350. DOI: 10.11939/jass.20170225
Citation: Sun Shaobo, Chen Shi, Gong Lizhuo, Xu Weimin. 2018: Crustal isostasy model and strong earthquakes in the Tibetan Plateau and its surroundings. Acta Seismologica Sinica, 40(3): 341-350. DOI: 10.11939/jass.20170225
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Crustal isostasy model and strong earthquakes in the Tibetan Plateau and its surroundings

  • 1.

    School of Earth Science and Resources，Chang’an University，Xi’an 710064，China

  • 2.

    School of Information Engineering，Xi’an University，Xi’an 710065，China

  • 3.

    Institute of Geophysics，China Earthquake Administration，Beijing 100081，China

More Information
  • Received Date: December 11, 2017
  • Revised Date: March 04, 2018
  • Available Online: April 03, 2018
  • Published Date: April 30, 2018
    Graphical Abstract
    • Abstract
  • The majority of earthquakes in Chinese mainland focused on the Tibetan Plateau and its surroundings, where not only associated with the complex tectonic deformation history, but also have a significant gravity anomaly characteristic. In this paper, we employed the EGM2008 gravity model, and computed the regional Bouguer and Airy isostasy gravity anomaly in the Tibetan Plateau and its surroundings. On the theory of combined isostasy model, we refer to the Moho depth from the Crust1.0 model, and inverse the crustal residual density distribution, which can be used to study the lateral density difference. At last, we compared with the lithospheric effective elastic thickness derived from the elastic plate model. The results show that the mechanical property and average density have a significant difference between the crust blocks of the Tibetan Plateau and surroundings, which provided a geodynamic background for the great earthquake preparation. The results could also provide a reference for estimating potential earthquake hazard locations.
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    • References (36)
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