A Strong Ground Motion Catalogue of Selected Records for Shallow Crustal, Near Field Earthquakes in Iran

IF 1 Q4 GEOSCIENCES, MULTIDISCIPLINARY
M. Sedghi, A. Dorostian, M. Zare, M. Pourkermani
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Abstract

Understanding strong ground motions in the near-fault areas is important for seismic risk assessment in densely populated areas. In the past, lack of information on strong ground motion for large and moderate earthquakes led to the use of mainly far field large and moderate earthquake records in equations for calculation of the strong ground motion parameters. In this article, we collected and generated a seismic catalogue with a data set of corrected and processed 217 triaxial near source strong ground motion and accelerometric data recorded from 1976 to 2018 obtained from 30 shallow crustal earthquakes with a focal depth below 30 km from different regions including 24 in Iran, 5 in California and one in Italy (because of the lack of Iranian near-field accelerograms) in different stations. These data were recorded (129 Iranian records, 88 from California and Italy) with a source-to-site distance less than 80 km and earthquakes between Mw = 5 and 7.5. Receiver function method was used for site classification for these records. The percentage of processed data in this study was 18%, 43%, 33% and 6% for the different site classes of 1, 2, 3, and 4. In the final catalog, records in which their PGA≥ 100 cm /s2, were reported. This near source ground motion database also contains information about ground motion, source parameters and is fundamental for dynamic research in earthquake engineering for the estimation of strong ground motion parameters (PGA, PGV, PGD and frequency content of response spectra) of moderate-to-large earthquakes.
伊朗浅层地壳近场地震强地震动记录目录
了解断层附近地区的强烈地面运动对于人口稠密地区的地震风险评估非常重要。过去,由于缺乏大中型地震的强震信息,导致在计算强震参数的方程中主要使用远场大中型地震记录。在本文中,我们收集并生成了一个地震目录,该目录包含1976年至2018年记录的217个三轴近源强地震动和加速度数据,这些数据来自不同地区的30次震源深度在30km以下的浅层地壳地震,其中包括伊朗的24次,加利福尼亚州有5个,意大利有一个(因为缺乏伊朗近场加速度计)。这些数据被记录下来(129份伊朗记录,88份来自加利福尼亚州和意大利),震源到现场的距离小于80公里,地震震级在5至7.5级之间。采用接收函数法对这些记录进行现场分类。对于1、2、3和4的不同站点类别,本研究中处理的数据百分比分别为18%、43%、33%和6%。在最终目录中,报告了PGA≥100 cm/s2的记录。该近震源地震动数据库还包含有关地震动、震源参数的信息,是地震工程中估计中大型地震强地震动参数(PGA、PGV、PGD和反应谱频率含量)的动力学研究的基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Iranian Journal of Earth Sciences
Iranian Journal of Earth Sciences GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
1.40
自引率
12.50%
发文量
0
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