Re-evaluations of seismic hazard of Iraq
Re-evaluations of seismic hazard of Iraq
复制标题
伊拉克地震危险性重新评估
DOI：
10.1007/s12517-018-3558-7
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发表时间：
2018
影响因子：
--
通讯作者：
M. Farman
中科院分区：
文献类型：
--
作者：
A. Said;M. Farman
近年来，伊拉克的地震活动有所增加，特别是在与伊朗东部边界附近。之前的研究以 PGA 形式呈现其结果，重现期为 500 年或更短，其他研究没有继续包括整个 PSHA 过程，而最近的一些研究继续包括使用 2009 年之前的地震数据（包括相关事件）的整个 PSHA 过程。本研究包括两个主要阶段，第一个阶段是收集截至2016年3月为止的近期事件的地震记录，并应用数据处理得到独立事件的网络目录。第二阶段是应用PSHA方法的步骤。 Matlab 程序已构建用于执行这两个阶段，并将 PSHA 计算结果转换为 5% 阻尼 PGA 的等值线以及 0.2 和 1.0 秒的谱加速度，重现期为 2475 年，适用于岩石场地。此外，还提供了主要城市相对于周期的频谱加速。此外，还绘制了 475 年重现期的 PGA 地图，然后与邻国的类似地图一起制作在一张地图中进行比较。总的来说，这种比较表明行为上的相似性，但价值观显示出相对一致，并且它们是土耳其和伊朗价值观之间的。
In recent years, Iraq has experienced an increase in seismic activity, especially, near the east boundary with Iran. Previous studies present their results in terms of PGA and for return periods of 500 years and less, and other studies not continued to include the whole PSHA process whereas some recent studies continued to include the whole PSHA process using earthquakes data till 2009 including dependent events. This study includes two main stages, the first is collecting the earthquakes records including the recent events till the end of March 2016 and applying data processing to get the net catalog to independent events. The second stage is applying the steps of PSHA method. Matlab programs have been built to execute these two stages and to convert the results of PSHA computations into contours of 5% damping PGA and spectral accelerations at 0.2 and 1.0 s for a return period of 2475 years, and for rock sites. Also, spectral acceleration against period has been presented for main cities. Also, the PGA map, for a return period of 475 years, has been plotted and then prepared together with similar maps of neighbor countries in one map for comparison. In general, this comparison indicates the similarity in behavior but, the values reveal a relative agreement and they are between Turkish and Iranian values.