气候变化领域集成服务门户(CCPortal): Probabilistic Seismic Hazard Assessment for Himalayan-Tibetan Region from Historical and Instrumental Earthquake Catalogs

CCPortal

DOI	10.1007/s00024-017-1659-y
	Probabilistic Seismic Hazard Assessment for Himalayan-Tibetan Region from Historical and Instrumental Earthquake Catalogs
	Rahman, M. Moklesur; Bai, Ling; Khan, Nangyal Ghani; Li, Guohui
通讯作者	Bai, L (通讯作者)
发表日期	2018
ISSN	0033-4553
EISSN	1420-9136
起始页码	685
结束页码	705
卷号	175 期号:2
英文摘要	The Himalayan-Tibetan region has a long history of devastating earthquakes with wide-spread casualties and socio-economic damages. Here, we conduct the probabilistic seismic hazard analysis by incorporating the incomplete historical earthquake records along with the instrumental earthquake catalogs for the Himalayan-Tibetan region. Historical earthquake records back to more than 1000 years ago and an updated, homogenized and declustered instrumental earthquake catalog since 1906 are utilized. The essential seismicity parameters, namely, the mean seismicity rate gamma, the Gutenberg-Richter b value, and the maximum expected magnitude M (max) are estimated using the maximum likelihood algorithm assuming the incompleteness of the catalog. To compute the hazard value, three seismogenic source models (smoothed gridded, linear, and areal sources) and two sets of ground motion prediction equations are combined by means of a logic tree on accounting the epistemic uncertainties. The peak ground acceleration (PGA) and spectral acceleration (SA) at 0.2 and 1.0 s are predicted for 2 and 10% probabilities of exceedance over 50 years assuming bedrock condition. The resulting PGA and SA maps show a significant spatio-temporal variation in the hazard values. In general, hazard value is found to be much higher than the previous studies for regions, where great earthquakes have actually occurred. The use of the historical and instrumental earthquake catalogs in combination of multiple seismogenic source models provides better seismic hazard constraints for the Himalayan-Tibetan region.
关键词	GROUND-MOTION LITHOSPHERIC STRUCTURE MAGNITUDE EUROPE INDIA RISK DEFORMATION ATTENUATION AFTERSHOCKS INTENSITY
英文关键词	Himalayan-Tibetan region; probabilistic seismic hazard; peak ground acceleration; Gutenberg-Richter b value; logic tree
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000426100500013
来源期刊	PURE AND APPLIED GEOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259153
推荐引用方式 GB/T 7714	Rahman, M. Moklesur,Bai, Ling,Khan, Nangyal Ghani,et al. Probabilistic Seismic Hazard Assessment for Himalayan-Tibetan Region from Historical and Instrumental Earthquake Catalogs[J]. 中国科学院青藏高原研究所,2018,175(2).
APA	Rahman, M. Moklesur,Bai, Ling,Khan, Nangyal Ghani,&Li, Guohui.(2018).Probabilistic Seismic Hazard Assessment for Himalayan-Tibetan Region from Historical and Instrumental Earthquake Catalogs.PURE AND APPLIED GEOPHYSICS,175(2).
MLA	Rahman, M. Moklesur,et al."Probabilistic Seismic Hazard Assessment for Himalayan-Tibetan Region from Historical and Instrumental Earthquake Catalogs".PURE AND APPLIED GEOPHYSICS 175.2(2018).