A strong-motion database from the Peru–Chile subduction zone
A strong-motion database from the Peru–Chile subduction zone
复制标题
秘鲁-智利俯冲带的强运动数据库
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Tavera
中科院分区：
文献类型：
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作者：
M. Arango;F. Strasser;J. Bommer;R. Boroschek;D. Comte;H. Tavera
秘鲁-智利俯冲带的地震风险是世界上最高的之一。因此，建立俯冲带强震记录数据库对该地区的地震预报具有重要意义。对秘鲁和智利不同网络运营商记录的加速图进行了统一的汇编和处理，并收集和审查了关于记录站的发震震源参数、断层面几何形状和当地场地条件的信息，以获得高质量的元数据。汇编的数据库包括1966至2007年间秘鲁和智利59个不同地点记录的15个俯冲型事件的98个三轴地面运动记录，这些事件的矩大小从6.3到8.4不等。虽然本研究提供的数据库不足以从秘鲁-智利地区的俯冲事件中推导出新的地面运动预测方程，但它大大扩展了可用于推导俯冲环境预测方程的强震数据和相关元数据的全球数据库。此外，汇编后的数据库将能够评估现有的俯冲型事件预测模型是否适用于秘鲁-智利地区，这将直接影响该地区的地震危险性评估。
Earthquake hazard along the Peru–Chile subduction zone is amongst the highest in the world. The development of a database of subduction-zone strong-motion recordings is, therefore, of great importance for ground-motion prediction in this region. Accelerograms recorded by the different networks operators in Peru and Chile have been compiled and processed in a uniform manner, and information on the source parameters of the causative earthquakes, fault-plane geometries and local site conditions at the recording stations has been collected and reviewed to obtain high-quality metadata. The compiled database consists of 98 triaxial ground-motion recordings from 15 subduction-type events with moment magnitudes ranging from 6.3 to 8.4, recorded at 59 different sites in Peru and Chile, between 1966 and 2007. While the database presented in this study is not sufficient for the derivation of a new predictive equation for ground motions from subduction events in the Peru–Chile region, it significantly expands the global database of strong-motion data and associated metadata that can be used in the derivation of predictive equations for subduction environments. Additionally, the compiled database will allow the assessment of existing predictive models for subduction-type events in terms of their suitability for the Peru–Chile region, which directly influences seismic hazard assessment in this region.