Volume 47 Issue 6
Jun.  2022
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JIANG Zaisen, SHAO Zhigang, LIU Xiaoxia, ZOU Zhenyu, WU Yanqiang. Crustal Deformation Associated with Seismogenic Process of Chinese Mainland Strong Earthquakes and Identification of Approximation to Seismogenic Process in the Late Seismogenic Stage[J]. Geomatics and Information Science of Wuhan University, 2022, 47(6): 807-819. DOI: 10.13203/j.whugis20220204
Citation: JIANG Zaisen, SHAO Zhigang, LIU Xiaoxia, ZOU Zhenyu, WU Yanqiang. Crustal Deformation Associated with Seismogenic Process of Chinese Mainland Strong Earthquakes and Identification of Approximation to Seismogenic Process in the Late Seismogenic Stage[J]. Geomatics and Information Science of Wuhan University, 2022, 47(6): 807-819. DOI: 10.13203/j.whugis20220204
shu

Crustal Deformation Associated with Seismogenic Process of Chinese Mainland Strong Earthquakes and Identification of Approximation to Seismogenic Process in the Late Seismogenic Stage

  • 1.

    Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China

  • 2.

    China Earthquake Networks Center, Beijing 100045, China

  • 3.

    The First Crust Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China

Funds: 

The National Natural Science Foundation of China 41904092

The National Natural Science Foundation of China 41974011

the Special Fund for Basic Scientific Research of the Institute of Earthquake Forecasting 2020IEF0506

the Special Fund for Basic Scientific Research of the Institute of Earthquake Forecasting CEAIEF2022010101

the National Key Reareach and Development Program of China 2018YFE0109700

More Information
  • Author Bio:

    JIANG Zaisen, PhD, professor, specializes in large-scale current crustal deformation and earthquake forecasting. E-mail: jiangzaisen@126.com

  • Received Date: May 19, 2022
  • Available Online: May 29, 2022
  • Published Date: June 04, 2022
    Graphical Abstract
    • Abstract
  • This paper briefly reviews the temporal and spatial characteristics of crustal deformation and its relationship with strong earthquakes in Chinese mainland based on geodetic observations. It also introduces the progress and understanding of extracting multi-scale crustal deformation characteristics associated with seismogenic process and various deformation anomalies before earthquakes in Chinese mainland. However, it is still insufficient that the effective basis for the crustal deformation can give the prediction of strong earthquakes in a clear time scale of 10 years and shorter. In order to promote the progress of continental strong earthquake prediction in a short time scale, it is necessary to effectively identify the process of strong source approaching earthquake in late seismogenic stage. Based on the analysis that the crustal deformation information observed by global navigation satellite system(GNSS) before several strong earthquakes, the crustal deformation state in the focal region of the late pregnancy earthquake could be transferred to the inelastic deformation state. Considering the factors such as the progress of observation technology, the possibility and related problems of the effective identification of the late pregnancy earthquake approaching to the strong source are discussed.
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    • References (65)
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