MODE OF THE FAULT FOR Ms9.0 EARTHQUAKE IN HONSHU,JAPAN
Yin Jiyao1,2) ; and Zhu Yuanqing2,1)
1)School of Ocean and Earth Science, Tongji University, Shanghai 200092 2)Earthquake Administration of Shanghai Municipality, Shanghai 200062
Abstract The dynamic environment of the Ms9.0 earthquake off the east coast of Honshu,Japan preliminarily discussed by using Japanese lacal geological structure,plate tectonics,post and cosmemic displacement at GPS stations in Japan area,focal mechanisms and so on.It can be compresses judged that the earthquake might happen in this way that the Pacific plate dives and compresses to below Eurasian plate, the stress between Pacific plate and Eurasian plate accumulates along with time, when the stress/strain intensity exceeds friction intensity or stress intensity of rock,thus the fault which at the depth of 10-20 km in the Eurasian plate became a thrust fault whose dip angle less than WadatiBenioff belt’s, and the earthquake occared.This earthquake makes a fault zone with about 600 km length and nearly the same strike as WadatiBenioff’s.The fault zone located at the boundary between Pacific plate and Eurasian plate close to southnorth strike.
Key words :
Ms9.0 earthquake off the east coast of Honshu in Japan
GPS
focal mechanisms
fault distribution
slip about fault
Received: 01 January 1900
Corresponding Authors:
Yin Jiyao
Cite this article:
Yin Jiyao,,and Zhu Yuanqing. MODE OF THE FAULT FOR Ms9.0 EARTHQUAKE IN HONSHU,JAPAN[J]. , 2011, 31(2): 12-16.
Yin Jiyao,,and Zhu Yuanqing. MODE OF THE FAULT FOR Ms9.0 EARTHQUAKE IN HONSHU,JAPAN[J]. jgg, 2011, 31(2): 12-16.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2011/V31/I2/12
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