Seismicity of egypt pdf

The sinai peninsula has a triangular shape between the african and arabian plates and is bounded from the western and eastern borders by the gulf of suez. Role of fluids in the earthquake occurrence around aswan reservoir, egypt kalpna gahalaut1 and awad hassoup2 received 18 august 2011. Egypt, arabia, the red sea region and the surrounding areas of libya, sudan and ethiopia are studied from the earliest times to the present day. Although egypt is an area of relatively low to moderate seismicity, it has experienced some damaging local shocks throughout its history, as well as the effects of larger earthquakes in the. Seismicity % gulf of suez % northern red sea % gulf of aqaba. Drift results of the equivalent static load analysis method are compared to those of nonlinear timehistory analysis using a suite of seven ground motions for each scenario. Aswan regional earthquake research center, 152, aswan, egypt. Analysis of the crosscorrelation between seismicity and. Seismicity of sinai peninsula, egypt article pdf available in arabian journal of geosciences 22. We can see that the faiyum area as well as the gulf of suez.

A joint analysis of the new satelliteterrestrial gravity field model with recent data on the crustal structure and seismic tomography was conducted to create an integrative model of the crust and upper mantle and to investigate the relation of the density structure and the isostatic state of the lithosphere to the seismicity of egypt. Tectonic boundaries of the eastern mediterranean region. In this study we investigate presentday seismicity and crustal deformation of egypt based on a comprehensive earthquake catalog from 1900 to 2004 by focal mechanism stress inversion and by recent. Abdelmotaal 1 1 aswan earthquake research center, p. What the pharaoh wore egyptian pharaohs wore ceremonial clothes. The regional seismic hazard in egypt is assessed using a deterministic approach based on the computation of. Elgabry3 1consiglio nazionale delle ricerche, istituto di metodologie per lanalisi ambientale, tito, italy 2aswan earthquake regional research center, aswan, egypt. The material presented in this web application should not be used or relied upon for any specific application without competent examination and verification of its accuracy, suitability and applicability by. The territory of egypt is characterized by a moderate. Seismicity of sinai peninsula and its surroundings from 1900 to 2008.

Although egypt is affected by moderate seismic activity compared to other countries, it is exposed. For studying the crustal deformation along the red sea region and gulf of aden, 12 geodetic stations were established to cover some areas in egypt and yemen. The area around sinai peninsula including gulf of aqaba, gulf of suez, and northern red sea is considered as the most active seismic region due to its complicated geologic structures. An updated seismic source model for egypt intechopen. In general, buildings in egypt are not designed to resist earthquakes, therefore relatively small events can be. There is a clear correlation between the principal areas of current geothermal development 26,27 and the seismically ac tive boundaries of the moving segments of lithosphere. Pdf integrated geologic and geophysical studies of north.

Earthquakes today earthquake today earthquake earthquakes. The 1998 egyptian costal zone earthquake is a moderate. Pdf the historical earthquakes that have been felt in egypt were compiled from arabic documents and earlier earthquake catalogues. The published seismic databases covering egypt until now are inadequate to study the longterm seismicity and recurrence interval for large earthquakes in. Egypt has been a leading player in the history of islam, at times as its political leader, usually as a trading entrepot, and almost always as a religious and cultural center. They will serve for further risk studies, construction codes, and also for landuse planning. The seismicity of egypt, arabia and the red sea deepdyve. These two zones behave differently over time, as mapped by seismicity rate, depth migration, bvalue, and spatial clustering. Many of the things that they wore or carried were symbols of their power and position in egyptian society. The models are such that the results could be updated at regular intervals of time, as more and more knowledge about the seismicity of egypt is made available. Seismicity is the distribution of earthquakes in a given area and their characteristics within a particular region. The 1955 alexandria earthquake occurred on september 12 at 06.

While the information presented on this website is believed to be correct, seaoc oshpd and its sponsors and contributors assume no responsibility or liability for its accuracy. Seismicity and geologic structures indubitable in wadi. Shallowdepth seismicity figure 3 is concentrated mainly in the surrounding plate boundaries and on some active seismic zones like aswan, abu dabbab, and. The seismicity of egypt was also studied by many authors e. Abou elenean a,b a national research institute of astronomy and geophysics, egypt b north africa group for earthquake and tsunami studies, ictpoea net40, italy c earthquake monitoring center, sultan qaboos university, oman received 22 may 2012.

Seismic hazard evaluation using strain energy release in egypt pdf. Analysis of the crosscorrelation between seismicity and water level in the aswan area egypt from 1982 to 2010 l. The seismotectonic sitting of egypt suggests that large earthquakes are. Cambridge university press, cambridge, 1994, 181 pp.

Seismic hazard analysis for archaeological structures a case. In 2017, the united nations environment programme stated in a report that 40,000 people in different parts of egypt all died continued. Pdf a study of seismicity and earthquake hazard at the. Black dots, red triangles, and stars show the seismicity of egypt egyptian national seismological catalogue, ensn, 19982011. Figure 1 shows the most important historical events affecting elsakakini palace. The earthquake activity and the state of stress in and around egypt will provide an opportunity to evaluate the seismic hazard. The epicenter was located in the eastern mediterranean, offshore of alexandria, egypt. Historical seismicity of egypt article pdf available in acta geodaetica et geophysica hungarica 341.

Ground motion prediction from nearest seismogenic zones, egypt fig. Some earthquakes are reported almost 4000 years ago. Moreover, detailed and reliable information is available for several destructive earthquakes in. The seismicity data were compiled from the egyptian national seismological network database during the period from 2004 to 2011 in. Mb seismicity of egypt was also studied by many authors e. Schnegg abstract the aswan reservoir seismicity is accepted as an example of reservoirinduced seismicity with the m 5. A longlasting relaxation of seismicity at aswan reservoir, egypt, 19822001 by m. About 83 earthquakes were found during the period from 2200bc to 1899ad. The book stems from the work carried out by the civil engineering department at imperial. Evaluation of the egyptian seismic code approach to estimation of lateral drift s. Emsc european mediterranean seismological centre provides real time earthquake information for seismic events with magnitude larger than 5 in the european mediterranean area and larger.

The seismicity of egypt, arabia and the red sea the seismicity of egypt, arabia and the red sea owen, lewis 19950101 00. Seismicity data sets in order to evaluate the seismic activity in study area and its surroundings, it was necessary to extend knowledge of earthquakes and time of their occurrence. Online the seismicity of egypt, arabia and the red sea. Seismicity of egypt based on the compiled earthquake catalog. Evaluation of the egyptian seismic code approach to. Seismicity and seismic hazard analysis in and around the proposed tushka new city site, south egypt raafat e. In conclusion, the seismic ground shaking hazard information in the form of isoacceleration maps and the seismic hazard curve developed in this study represents one of the most used. The number of annually expected earthquakes with magnitude. Electrical structure of the tectonically active kalabsha. Seismicity and 10years recent crustal deformation studies at aswan region, egypt mohamed s. Ground motion prediction from nearest seismogenic zones in.

Seismicity and geologic structures indubitable in wadi hagul. Although egypt is an area of relatively low to moderate seismicity, it has experienced some damaging local shocks throughout its history, as well as the effects of larger earthquakes in the hellenic arc and the eastern mediterranean area. The egyptian coastal zone has the lowest seismicity, and therefore, its tectonic setting is not well known. Deterministic seismic hazard in egypt geophysical journal. Cambridge university press 0521020255 the seismicity of egypt, arabia and the red sea. Abou elenean a,b a national research institute of astronomy and geophysics, egypt b north africa group for earthquake and tsunami studies, ictpoea net40, italy. Seismicity of egypt the seismicity of egypt is characterized by small to moderate earthquake activities due to the relative motions between the african, arabian and eurasian plates. Seismicity and seismic hazard analysis in and around the.

Historical seismicity egypt possesses a rich earthquake catalogue that goes back to the ancient egyptian times. May 15, 2018 cairo has been ranked as the second most polluted large city in the world, according to a report issued by the world health organization who, which studied air pollution globally from 2011 until 2015. In this area, the recent seismic activity for a period from 1997. Egyptian national seismological network ensn and its. The hazard parameter determination is performed for two study areas. Up to the end of the ninth century the secular number of. Egypt on the ancient hebrews, mesopotamians, and syrians, and on classical greece and rome. A study on seismicity and tectonic setting in the northeastern part of egypt. A zoomed image of the northeastern part of the study area, which is seismically most active, is shown in the right.

This is essentially a catalogue of the historical and recent earthquakes in egypt, arabia and the red sea. Seismicity and focal mechanisms of earthquakes in egypt from. Density structure and isostasy of the lithosphere in egypt. Seismicity and focal mechanisms of earthquakes in egypt from 2004.

Analyses of these data suggest that the aswan seismicity. High and aswan dams authority hada proposed a plan aiming at constructing a rockfill dam in the kalabsha area, about 60 km south of aswan high dam. The highest seismicity rates are found at the eastern boundaries of egypt, viz. Each earthquake is described as fully as possible from the available data, and is analysed in a geographical and historical context. Pdf earthquakes represent a major natural hazard, potentially resulting in loss of life and economic loss. Up to the end of the ninth century the secular number of reported. Seismic hazard in egypt is highest at the southern end of the gulf of suez, the northern red sea and around the gulf of aqaba, the location of the active plate boundaries. The aswan seismicity may be subdivided into shallow 0. Seismic hazard analysis for archaeological structures a. The historical earthquakes that have been felt in egypt were compiled from arabic documents and earlier earthquake catalogues.

This is a list of earthquakes in egypt, including earthquakes that either had their epicenter in egypt, or caused significant damage in egypt. A longlasting relaxation of seismicity at aswan reservoir. Thin black and red lines are the surface and quaternary faults dotted where concealed after the egyptian geological survey of egypt 1981. Seismicity and seismic hazard in alexandria egypt and its. Role of fluids in the earthquake occurrence around aswan. Seismicity and focal mechanisms of earthquakes in egypt. Probabilistic seismic hazard maps for sinai peninsula, egypt. It is well known that the northern section of egypt and study area has experienced numerous moderate earthquakes with. The first area, gulf of suez, has higher seismicity level than the second, all other active zones in egypt. Both epistemic and aleatory uncertainties were considered during the hazard calculation, two seismotectonic source models and six attenuation models were used and weighted to account for the epistemic uncertainties, aleatory variability were minimized by giving priorities to the high. The seismicity data were compiled from the egyptian national seismological network database during the period from 2004 to 2011 in an attempt to identify the different seismic source regions.

Look carefully at the pharaoh that is pictured above. Aug 22, 20 the historical earthquakes that have been felt in egypt were compiled from arabic documents and earlier earthquake catalogues. Haroun the american university in cairo, egypt abstract the use of the reducedforceamplifieddisplacement method in seismic design provisions, has served the practice well with the benefits of simplicity and smaller resulting crosssections. Monitoring of recent crustal deformation was carried out using gps observations to detect the presentday styles and rates of extension, as well as riftmargin deformation along the extent of the red sea rift. The aim of this dam is to restrain the overflow of water to the kalabsha valley for. Pdf seismicity of sinai peninsula, egypt kamal hassanein. List of earthquakes in 1955 list of earthquakes in egypt. Todays earthquakes in egypt map of earthquakes today.

We examine the correlation of north egypt unstable continental shelf earthquakes using five geologic and geophysical data sets. The seismicity of egypt, arabia and the red sea by n. The seismicity of egypt has been studied by many authors e. Mohamed, mohamed saleh and nadia aboualy national research institute of astronomy and geophysics, helwan corresponding authors email. The origin of the earthquakes within the continental intraplate has been the subject of debate over long time. Recent seismicity data clarify that, all inland seis mic activity in egypt lies conformable over the preex isting ew and wnwese or nwse faults. Threedimensional seismic attenuation tomography of egypt. Cairo has been ranked as the second most polluted large city in the world, according to a report issued by the world health organization who, which studied air pollution globally from 2011 until 2015.