Seismic Hazard Estimate Using Spatially Smoothed Seismicity Model as Spatial Distribution Function
详细信息
- 责任者：Xu Weijin (Institute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China) ; Gao Mengtan
- 刊名：Acta Seismologica Sinica
- 出版年：2012
- 卷期：34(4)
- 关键词：地震活动性 ; seismicity ; 地震危险性 ; seismic risk ; 华北平原 ; North China Plain
- 页码：p.526-536
- 图表：5 illus., 1 table, 27 refs.
- 分类号：0500
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
摘要
In this paper, the authors established four spatially smoothed seismicity models based on the earthquake catalog of North China. Taking these models as the spatial distribution function, the authors distributed the seismic annual rates into grid cells of every seismic belt in North China seismic area,and calculated the seismic hazard in this region. The PGA distribution in North China region is the average with an equal weight of four PGA values obtained from four seismicity models for 10% P.E. in 50 a. Comparing this PGA distribution with another PGA distribution for 10% P.E.in 50 a, which is calculated by combined potential seismic sources according to “National Seismic Zoning Map”, the auhtors find that there is no essential difference between them, and both of them can reflect the seismic hazard level of North China seismic region.
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