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Ground motion prediction from nearest seismogenic zones in and around Greater Cairo Area, Egypt

机译：埃及大开罗地区及其周围地区最近地震发生带的地震动预测

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摘要

This paper reviews the likely source characteristics, focal source mechanism and fault patterns of the nearest effective seismogenic zones to Greater Cairo Area. Furthermore, M_(max) and ground accelerations related to the effective seismic events expected in future from those seismogenic zones are well evaluated. For this purpose, the digital waveform of earthquakes than M_LCombining double low line3 that occurred in and around Greater Cairo Area from 1997 to 2008 which have been recorded by the Egyptian National Seismological Network, are used to study source characterization, focal mechanism and fault pattern of the seismogenic zones around Greater Cairo Area. The ground motions are predicted from seismogenic zones to assess seismic hazard in the northeastern part of Greater Cairo, where three effective seismogenic zones, namely Abou Zabul, southeast Cairo trend and Dahshour area, have the largest effect to the Greater Cairo Area. The M _(max) was determined, based upon an empirical relationship between the seismic moment and the rupture length of the fault during the earthquake. The estimated M_(max) expected from Abou Zabul, southeast Cairo trend, Dahshour seismic sources are of M_w magnitudes equal to 5.4, 5.1, and 6.5, respectively. The predominant fundamental frequency and soil amplification characteristics at the area were obtained using boreholes data and in-situ ambient noise measurement.
机译：本文回顾了距大开罗地区最近的有效地震发生带的可能震源特征，震源机制和断层模式。此外，对与未来预期的有效地震事件有关的M_（max）和地面加速度进行了很好的评估。为此，埃及国家地震台网记录了1997年至2008年在大开罗地区及其周围发生的M_LCombining双低线3地震的数字波形，用于研究震源特征，震源机制和断层模式。大开罗地区周围的地震带。预测地震发生带的地震动，以评估大开罗东北部的地震危险，其中三个有效的地震发生带，即阿布扎布尔，开罗东南趋势和达斯豪尔地区，对大开罗地区的影响最大。 M _（max）是根据地震矩与地震过程中断层破裂长度之间的经验关系确定的。 Dahshour地震在开罗东南部的阿布扎布尔（Abou Zabul）地震源的估计M_max分别等于5.4、5.1和6.5。利用钻孔数据和现场环境噪声测量获得该地区的主要基频和土壤放大特征。

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