Strong Ground Motion Attenuation Relations for Chilean Subduction Zone Interface Earthquakes

Strong Ground Motion Attenuation Relations for Chilean Subduction Zone Interface Earthquakes
复制标题

智利俯冲带界面地震的强地震动衰减关系

DOI:
--
复制
发表时间:
2012
期刊:
影响因子:
--
通讯作者:
R. Boroschek
R. Boroschek
中科院分区:
--
文献类型:
--
作者:
V. Contreras;R. Boroschek

文献摘要

被引文献

相似文献

利用智利地震记录数据库,建立了水平峰值加速度(PGA)和水平谱加速度(SA)的衰减公式。这是智利的第一项研究,其中包括频谱加速度衰减模型的发展。所使用的数据库对应于1985年至2010年期间发生的纳斯卡板块和南美洲板块界面(逆冲断层)的地震记录。我们包括了2010年智利马乌莱8.8级地震的加速度图,这是世界上最大的强震记录之一。地震数据库分析,使智利界面地震的频谱加速度衰减关系的第一次估计。建议的公式考虑到不同的土壤类型(岩石或土壤),根据智利代码土壤分类。这些地面运动预测方程可能是有用的,以改善在智利和其他类似的俯冲带的地震危险性评估。
Attenuation formulas are established for horizontal Peak Ground Accelerations (PGA) and horizontal Spectral Accelerations (SA) using a database of Chilean seismic records. This is the first Chilean study that includes the development of a spectral acceleration attenuation model. The database used corresponds to records of earthquakes from the Nazca plate and the South American plate interface (thrust-faulting) that occurred between 1985 and 2010. We have included accelerograms from the 2010 Mw 8.8 Maule Chile earthquake, one of the largest strong motion recordings world-wide. The earthquake database analyzed enabled a first estimation of spectral acceleration attenuation relations for Chilean interface earthquakes. The proposed formulas take into account differences in the soil type (rock or soil) according to the Chilean code soil classification. These ground motion prediction equations could be useful to improve the seismic hazard assessment in Chile and others similar subduction zones.