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Professor Chen Xiaofei from Southern University of Science and Technology visited the Institute of Geology

2019/8/21 14:08:16

At the invitation of Director Ma Shengli, Academician Chen Xiaofei from Southern University of Science and Technology visited the Institute of Geology and gave an academic presentation on “A map of earthquake fracture facies and its physical significance” and “Extraction of the dispersion curve of high-order earthquake surface waves and its application in crustal structural imaging”. More than 100 scientific research personnel and graduate students from the Institute of Geology and Geophysics of the Chinese Academy of Sciences, the Sichuan Earthquake Administration, the China Earthquake Networks Center and other institutions attended the presentation. The academic exchange was presided over by Researcher Shan Xinjian, Deputy Director of the Institute of Geology.

Professor Chen Xiaofei is a chair professor at Southern University of Science and Technology. He has long been engaged in research on the theory of earthquake wave propagation and source fracture dynamics and in studies of numerical simulation. In the presentation, Professor Chen Xiaofei described the earthquake dynamic fracture phase diagram. He also introduced the third form of earthquake fault dynamic fracture expansion in a simple way: self-stopping rupture, which provides a theoretical basis to understand the law of earthquake activity. He introduced the method for extracting the dispersion curve of high-order earthquake surface waves and the role of this curve in the imaging of crustal structure. He also emphasized the importance of the dispersion signal of high-order earthquake surface waves in the inversion of the details of underground structure. The presentation was both informative and detailed. The scientific research personnel and postgraduates listened carefully, actively asked questions and interacted with each other. The atmosphere of the discussion was warm and lively. From this presentation, the participants gained a deeper understanding of the fracture phase diagram of earthquakes and the dispersion signal of high-order earthquake surface waves. The information from the presentation will be useful for future theoretical research and practical work.