Simulating time-histories and pseudo-spectral accelerations from the 1992 Cairo earthquake at the proposed El-Fayoum New City Site,Egypt |
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Authors: | Abd El-Aziz Khairy Abd El-Aal |
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Institution: | (1) Seismology Department, National Research Institute of Astronomy and Geophysics, Helwan, Egypt;(2) North Africa Seismological Group NASG Net40/OEA/ICTP, Trieste, Itlay |
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Abstract: | El-Fayoum New City represents one of the new urban settlements that are recently erected all over Egypt. Because seismic recordings
are not available, I used the stochastic method to simulate the largest damaging earthquake from the closest seismic source
to the proposed area of the city. To verify the method and its computed results in Egypt, a study termed “method verification”
was performed. I found that the October 12, 1992, earthquake (M
b
= 5.8) that occurred southwest of Cairo in the vicinity of the Dahshour region, at the coordinates 29.77°N, 31.07°E, is a
significant earthquake to the city. The parameters of the path from the hypocenter of the event to the city were taken into
consideration. To determine the site parameters, a shallow seismic refraction survey was carried out in the studied area.
Accordingly, I simulated time-histories and pseudo-spectral accelerations from the October 12, 1992, earthquake at the location
of seismic profiles. Finally, it is demonstrated that the site is characterized by high ground motion amplification factors,
producing a high ground motion acceleration value. |
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Keywords: | |
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