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A Ground‐Motion Database for Israel with Its Corresponding Point‐Source Parameters, for Engineering Seismology Applications
Seismological Research Letters ( IF 3.3 ) Pub Date : 2021-07-01 , DOI: 10.1785/0220200477
Gony Yagoda-Biran 1 , Soumya K. Maiti 2 , Nadav Wetzler 1 , Ran N. Nof 1 , Yona Pashcur 3 , Ronnie Kamai 2
Affiliation  

The seismic activity in Israel and its surrounding neighbors originates mainly from the active Dead Sea fault system. The historical and archeological records suggest a recurrence interval of approximately 102 and 103 yr for earthquakes of M 6 and 7, respectively. Despite the existing hazard, local advancements on this topic have been slow and incremental, partly due to inherent challenges, such as the limited number of significant recorded earthquakes and a limited azimuthal coverage resulting from geopolitical constraints. Annual earthquake bulletins and an earthquake catalog have been published over the years by the Geophysical Institute of Israel, which operated the network until January 2020. In this article, we summarize a joint effort aimed at standardizing the catalog and creating the first of its kind, publicly available ground‐motion database for Israel, which is open to the scientific and engineering communities. The database is composed of three main components: event database, ground‐motion recording database, and site database. Once compiled, we use this database to derive and calibrate the source, path, and site parameters required to execute ground‐motion simulations, namely, the regional stress drop, anelastic attenuation factor Q, geometrical spreading, and the near‐surface high‐frequency attenuation, kappa. The parameters are optimized to fit the measurement database, and once they do, a synthetic dataset can be simulated, which will compensate for the lack of measurements in the large‐magnitude range.

中文翻译:

用于工程地震学应用的以色列地面运动数据库及其相应的点源参数

以色列及其周边邻国的地震活动主要源自活跃的死海断层系统。历史和考古记录表明,6 级和 7 级地震的复发间隔分别约为 102 年和 103 年。尽管存在危险,但当地在该主题上的进展缓慢且渐进,部分原因是固有的挑战,例如记录的重大地震数量有限以及地缘政治限制导致的方位角覆盖范围有限。多年来,以色列地球物理研究所一直在发布年度地震公报和地震目录,该网络一直运营到 2020 年 1 月。在本文中,我们总结了旨在标准化目录并创建同类首个目录的共同努力,以色列公开可用的地面运动数据库,对科学和工程界开放。该数据库由三个主要部分组成:事件数据库、地震动记录数据库和站点数据库。编译后,我们使用该数据库导出和校准执行地震动模拟所需的源、路径和站点参数,即区域应力降、非弹性衰减因子 Q、几何扩展和近地表高频衰减,kappa。参数被优化以适应测量数据库,一旦它们完成,就可以模拟合成数据集,这将弥补大幅度范围内测量的不足。事件数据库、地面运动记录数据库和站点数据库。编译后,我们使用该数据库导出和校准执行地震动模拟所需的源、路径和站点参数,即区域应力降、非弹性衰减因子 Q、几何扩展和近地表高频衰减,kappa。参数被优化以适应测量数据库,一旦它们完成,就可以模拟合成数据集,这将弥补大幅度范围内测量的不足。事件数据库、地面运动记录数据库和站点数据库。编译后,我们使用该数据库导出和校准执行地震动模拟所需的源、路径和站点参数,即区域应力降、非弹性衰减因子 Q、几何扩展和近地表高频衰减,kappa。参数被优化以适应测量数据库,一旦它们完成,就可以模拟合成数据集,这将弥补大幅度范围内测量的不足。和近地表高频衰减 kappa。参数被优化以适应测量数据库,一旦它们完成,就可以模拟合成数据集,这将弥补大幅度范围内测量的不足。和近地表高频衰减 kappa。参数被优化以适应测量数据库,一旦它们完成,就可以模拟合成数据集,这将弥补大幅度范围内测量的不足。
更新日期:2021-06-28
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