globalchange  > 气候变化与战略
DOI: 10.1007/s11069-020-03943-8
论文题名:
Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina
作者: Alvarado P.; Christiansen R.; Gregori S.D.; Saez M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 102, 期:3
起始页码: 1011
结束页码: 1031
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168377
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Natural Hazards,2020-01-01,102(3)
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