Insight on seismic hazard studies for Egypt

Hassan, Hany M.; Panza, G. F.; Romanelli, Fabio; Gabry, Mohamed El

doi:10.1016/j.enggeo.2017.01.029

Cited by 13 publications

(5 citation statements)

References 52 publications

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“…Moreover, most of the maps of ground movement in Egypt have not been confirmed by recent observations or macroseismic data. Hassan et al (2017a) showed that the parameters of ground movement calculated by different researchers contradict the observed macroseismic intensity. This discrepancy is mainly due to the fact that the identification and parameterization of seismotectonic sources for Egypt are based only on seismological observations, while paleoseismic and MSZ studies or other data related to the delineation of potential seismotectonic sources that may have been active before the period of instrumental observations were ignored.…”

Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 95%

“…Most recent reviews of the seismic hazard research in Egypt presented by Sawires et al (2016a) and Hassan et al (2017a) were mainly initiated by the extending of earthquake records rather than by the developments of the methodology for seismic hazard assessment (SHA). Most of the existing SHA maps for Egypt are designed using the traditional approaches [deterministic seismic hazard analysis and probabilistic seismic hazard analysis (DSHA and PSHA)] and have not taken into account the recent improvements for computations of such maps.…”

Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 99%

“…This permits to design a set of seismic hazard maps using the NDSHA procedure at a national scale that may efficiently integrate any reliable new data to adequately compute the maps of the ground shaking parameters. Recently, some seismic hazard assessment studies (e.g., Sawires et al 2016a, b, c;Hassan et al 2017b;Gorshkov et al 2019) and reviews (e.g., Hassan et al 2017a) for Egypt have been released. The available seismological, MSZ (Gorshkov et al 2019), and seismotectonic data made it possible to competently construct synthetic seismograms from all potential seismic sources identified in Egypt.…”

Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 99%

“…Actually, the characterization of the first two sets of parameters is challenging due to lack of knowledge and uncertainty related with their estimations that varies with the particular tectonic setting. The situation is even more difficult in continental regions, where the seismogenesis is poorly understood and there is not a clear relationship between the documented seismicity and the tectonic structures or active faults like the case of Egypt (Hassan et al 2017a).…”

Section: Introductionmentioning

confidence: 99%

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Identifying Potential Earthquake Sources in Continental Environments

et al. 2022

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In this paper, we outline the overview of the problem of intraplate seismicity and summarize our studies aimed at identifying potential earthquake sources in three regions located in continental environments. We study the French Massif Central situated within the West-European platform, the Gujarat area located at the northwestern edge of the Indian shield, and northeast Egypt located in the northeastern part of the African continent. These regions exhibit different levels of seismic activity. The French Massif Central reveals the lowest rate of seismicity, northeast Egypt exposes a low-to-moderate seismicity, and Gujarat reveals moderate seismicity with rare occurrence of strong events. We use a phenomenological approach for identifying possible locations of earthquakes, which is based on the pattern recognition applied to morphostructural data. The approach hypothesizes the nucleation of strong earthquakes at morphostructural nodes forming at the intersections of morphostructural lineaments, which are delineated by morphostructural zoning. Nodes are characterized by the pertinent geophysical and geological parameters, on the basis of which pattern recognition algorithm pinpoints capable nodes, i.e., the nodes where events of a certain sizes may occur. Seismic hazard assessment of continental regions is impeded because their seismic history is normally very pure. In such a situation, information on capable nodes is a necessary input for seismic hazard assessment. The example of northeast Egypt shows the exploiting capable nodes to assess seismic hazard by the Neo-Deterministic Seismic Hazard Assessment Methodology.

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Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 95%

Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 99%

Section: Seismicity and Earthquake Hazard Research In Egyptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identifying Potential Earthquake Sources in Continental Environments

et al. 2022

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“…Gaspar-Escribano [6] conducted an uncertainty assessment of developed seismic hazard model for Spain. Hassan [7] comprehensively evaluated existing seismic hazard maps of Egypt, to identify short falls such as under-estimated hazard in the event of an earthquake. Usually, one is interested in an optimal mitigation level that minimized the total cost (the summation of the expected loss and mitigation cost), and this is highly dependent on the reliability of the hazard model adopted.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Based Seismic Hazard Model for Southern Ghana

et al. 2018

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Seismic hazard assessment involves quantifying the likely ground motion intensities to be expected at a particular site or region. It is a crucial aspect of any seismic hazard mitigation program. The conventional probabilistic seismic hazard assessment is highly reliant on the past seismic activities in a particular region. However, for regions with lower rates of seismicity, where seismological data is scanty, it would seem desirable to use a stochastic modelling (Monte Carlo based) approach. This study presents a Monte Carlo simulation hazard model for Southern Ghana. Six sites are selected in order to determine their expected ground motion intensities (peak ground acceleration and spectral acceleration). Results revealed that Accra and Tema as the highly seismic cities in Southern Ghana, with Ho and Cape Coast having relatively lower seismicities. The expected peak ground acceleration corresponding to a 10% probability of exceedance in 50 years for the proposed seismic hazard model was as high as 0.06 g for the cities considered. However, at the rather extreme 2% probability of exceedance in 50 years, a PGA of 0.5 g can be anticipated. Evidently, the 2% in 50 years uniform hazard spectrum for the highly seismic cities recorded high spectral accelerations, at a natural vibrational period within the ranges of about 0.1-0.3 sec. This indicates that low-rise structures in these cities may be exposed to high seismic risk.

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Updated Seismic Input for Next Generation of the Egyptian Building Code

Gabry

Hassan

2020

Sustainable Civil Infrastructures

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Insight on seismic hazard studies for Egypt

Cited by 13 publications

References 52 publications

Identifying Potential Earthquake Sources in Continental Environments

Identifying Potential Earthquake Sources in Continental Environments

Monte Carlo Based Seismic Hazard Model for Southern Ghana

Updated Seismic Input for Next Generation of the Egyptian Building Code

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