Seismic hazard assessment for greater North China from historical intensity observations

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• 作者：Jingwei Liu ; Zhenming Wang ; Furen Xie ; Yuejun Lv
• 关键词：Chinese intensity ; Seismic hazard ; Seismic risk ; Deterministic seismic hazard analysis (DSHA) ; Probabilistic seismic hazard analysis (PSHA) ; Seismic design
• 刊名：Engineering Geology
• 出版年：2013
• 出版时间：17 September, 2013
• 年：2013
• 卷：164
• 期：Complete
• 页码：117-130
• 全文大小：4052 K

文摘

Seismic hazards in greater North China were estimated from 500 years of intensity observations. Historical intensity observations were collected, the completeness of the earthquake catalog was tested, and aftershocks were deleted. The intensity data were digitized and placed in a geographic information system (GIS). Finally, the digitized intensity data were analyzed to determine the frequency-intensity relationship (i.e., seismic hazard curve). Seismic risks were also estimated, assuming a Poisson distribution for earthquake occurrence in time. The results show that greater North China faces significant seismic hazards and risks. The results also show that the current design peak ground acceleration (PGA) for greater North China might not be adequate, particularly for the Beijing, Tianjin, and Tangshan areas.