气候变化领域集成服务门户(CCPortal): Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina

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DOI	10.1007/s11069-020-03943-8
	Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina
	Alvarado P.; Christiansen R.; Gregori S.D.; Saez M.
发表日期	2020
ISSN	0921030X
起始页码	1011
结束页码	1031
卷号	102 期号:3
英文摘要	The present study has investigated site amplification effects from the analysis of peak ground accelerations (PGA) and spectral accelerations (SA) of the last two major crustal earthquakes in central-western Argentina. These data were obtained from 15 accelerometers and 57 seismoscopes, which recorded ground motions during the 1977 (Mw 7.5) San Juan earthquake, and the 1985 (Mw 5.9) Mendoza earthquake. PGA and SA measurements were compared with average values predicted by global attenuation empirical relationships for the same type of crustal earthquakes. The amplifications in ground accelerations were analyzed according to their distribution and compared with the average shear wave velocities at 30 m depth (Vs30) where the stations are located. Our results definitively show that site effects and direction of maximum surface wave radiation strongly amplify the ground acceleration during moderate to large earthquakes near San Juan and Mendoza (Argentina); this is of importance in seismic hazard analyses. © 2020, Springer Nature B.V.
关键词	Peak ground acceleration Seismic hazard Spectral acceleration Surface wave radiation pattern
英文关键词	amplification; crustal movement; earthquake event; earthquake magnitude; ground motion; S-wave; seismic attenuation; seismic hazard; seismicity; wave velocity; Argentina
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205578
作者单位	Centro de Investigaciones de la Geósfera y Biósfera CIGEOBIO (CONICET-Universidad Nacional de San Juan UNSJ), Av. Ignacio de la Roza 590, Rivadavia, San Juan CP: J5402DCS, Argentina; Departamento de Geofísica y Astronomía - FCEFyN, Universidad Nacional de San Juan, San Juan, Argentina; Instituto Geofísico Sismológico Volponi (IGSV) - FCEFyN, Universidad Nacional de San Juan, Rivadavia, San Juan 5407, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT San Juan, Argentina
推荐引用方式 GB/T 7714	Alvarado P.,Christiansen R.,Gregori S.D.,et al. Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina[J],2020,102(3).
APA	Alvarado P.,Christiansen R.,Gregori S.D.,&Saez M..(2020).Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina.Natural Hazards,102(3).
MLA	Alvarado P.,et al."Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina".Natural Hazards 102.3(2020).