Time:2017-12-15(Friday) 09:30-11:00
Speaker:Yuntai Chen, Prof., Academician
Institution:Institute of Geophysics, China Earthquake Administration
Venue:A3-206 Zhou Long Quan Building
Host:Minhan Dai, Prof., Academician
Contact:Lidan Chen, coestd@xmu.edu.cn
Yuntai Chen, Prof., Academician
Institute of Geophysics, China Earthquake Administration, Beijing, China.
Prof. Yuntai Chen mainly works on the theory and application of seismic waves and focus, with more than 300 scientific articles published. His research achievements on the theory (simulation of seismic focus and seismic sequences) and application (inversion of source rupture process and near-source observation of human-triggered earthquakes such as natural and subsurface nuclear explosions) of earthquake rupture dynamics have enhanced the understanding of the time-space complexity of earthquake rupture process, and have been successfully applied in the mitigation of seismic hazards.
In the 1970s, he began to use seismic wave, ground deformation and gravity to comprehensively study the focal processes of massive earthquakes that occurred in our country, which started the research on the physical processes of seismic source in China.
In the 1980s, he made important contributions to earthquake rupture mode and earthquake sequence simulation in the study of earthquake focal dynamics theory Since the 1980s, he has actively advocated and been engaged in digital seismology research, near-source observation and research of natural and human-triggered earthquakes and their applications in mitigation of seismic hazards. He utilized inversion of broadband digital seismic data, including inversion of focal rupture process of both small earthquakes and massive earthquakes and inversion of focal processes of human-triggered earthquakes (subsurface nuclear explosions, etc.), enhancing the understanding of the space-time complexity of focal rupture processes.
Since the 1980s, Prof. Yuntai Chen and his collaborators have actively advocated the study of rotational seismology, and have followed and supported the development and observation of rotational seismometers.
In the 21st century, he collaborated with Prof. L. Knopoff, an internationally renowned theoretical geophysicist, to continuously explore the most basic topics in seismology. For example, they have made improvement for the two basic far-reaching principles which have been used in modern quantitative seismology for more than 50 years proposed by Knopoff (1956). The research results were published on the special issue Rotational Seismology (Knopoff and Chen, 2009) in the international journal of seismology and geophysics Bull. Seismol. Soc. Amer. (SCI indexed). In six months upon publication (Apr. –Sep., 2009), it already ranked 41st of the 50 Most-Frequently Read Articles in the journal.
