10th GRC International Frontier Seminar

"The diversity of the physics of earthquakes"

Dr. Hiroo KANAMORI
Professor, Seismological Laboratory, California Institute of Technology


5 Noｖember 2004　14:00-15:00
Meeting room, 6th floor, Advanced Research Building, Ehime University

　Earthquakes exhibit diverse characteristics. Most shallow earthquakes are "brittle" in the sense that they excite seismic waves efficiently. However, some earthquakes are slow, as characterized by tsunami earthquakes and even slower events without any obvious seismic radiation. Also, some earthquakes, like the 1994 Bolivian deep earthquake, involved a large amount of fracture and thermal energy and may be more appropriately called a thermal event, rather than an earthquake. Some earthquakes are caused by processes other than faulting, such as landslides. This diversity can be best understood in terms of the difference in the partition of the released potential energy to radiated, fracture, and thermal energies during an earthquake. This approach requires detailed studies on quantification of earthquakes and estimation of various kinds of energies involved in earthquake processes. I will review the progress in this field and discuss its implications for earthquake damage mitigation.

　

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主催：愛媛大学地球深部ダイナミクス研究センター