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Associate Professor Bogdan Enescu of Kyoto University, Japan, came to the Institute of Geology for academic exchange

2018/5/30 5:50:07

At the invitation of associate research fellow Wang Lifeng, Associate Professor Bogdan Enescu of Kyoto University, Japan, visited our institute and gave an academic presentation titled "Remote triggering of earthquakes as a potential stress-meter: the case of the 2016 M7.3 Kumamoto (Kyushu) of the mainshock" on May 17, 2018. Bogdan Enescu holds a dual doctorate in physics from Bucharest University in Romania and geophysics from Kyoto University in Japan, and he is an expert in earthquake triggering, micro-earthquake identification and precise earthquake positioning.
  The mechanism of earthquake triggering by remote stress is different in different regions. For example, before the 2011 East China Sea Earthquake, earthquakes triggered by remote stress on the Japanese islands were not often observed. However, Professor Enescu's team found that the 7.3-magnitude Kumamoto Earthquake in 2016 caused a widespread remote-triggered earthquake on the Japanese islands. These areas also experienced remote stress-triggered earthquakes during the 2011 Tokai Earthquake in Japan. Therefore, Professor Enescu believes that the 2011 earthquake may have had a mechanical weakening effect on these regions, making them more vulnerable to earthquakes triggered by remote stresses. This finding also means that the occurrence of remote-stress-triggered earthquakes can reflect the regional stress level to some extent, which has certain indicating significance in earthquake risk assessment.