Analysis of the similar epicenter earthquakes on 22 January 2013 and 01 June 2013, Central Gulf of Suez, Egypt

Toni, Mostafa; Barth, Andreas; Ali, Sherif M.; Wenzel, Friedemann

doi:10.1016/j.jafrearsci.2016.06.013

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…On the first of June 2013, a moderate earthquake with local magnitude (M L 5.1) struck the middle part of the Gulf of Suez at latitude 28.433°N, longitude 33.153°E, and depth of 21 km. According to Toni et al (2016b) this earthquake originated from oblique fault (normal fault with strike-slip components). The quake was felt in various locations around the epicenter.…”

Section: Discussionmentioning

confidence: 99%

“…This technique requires information about earthquake's source, propagation path, and site response. In the current study, parameters of the earthquake source in terms of moment magnitude, stress drop, seismic moment, density and shear velocity of the source region were taken from Toni et al (2016b) and Marzouk (1987). The path effect (path attenuation) was taken as Q(f) = 320 f 0.49 (Girgis, 2010).…”

Section: Fig 5 H/v Spectral Ratio Curves Obtained At Zone a In Rasmentioning

confidence: 99%

“…No casualties were caused by the 1 June 2013 earthquake; however, minor damage to prop-erty was observed near the epicenter. Toni et al (2016b) studied the source mechanisms and parameters of the 1 June 2013 earthquake by using the moment tensor inversion and the first motion polarities of P-and S-waves methods. They concluded that this event had a normal faulting mechanism with strikeslip components.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of strong ground motion parameters of the 1 June 2013 Gulf of Suez earthquake, Egypt

Toni

2017

NRIAG Journal of Astronomy and Geophysics

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This article aims to simulate the ground motion parameters of the moderate magnitude (M L 5.1) June 1, 2013 Gulf of Suez earthquake, which represents the largest instrumental earthquake to be recorded in the middle part of the Gulf of Suez up to now. This event was felt in all cities located on both sides of the Gulf of Suez, with minor damage to property near the epicenter; however, no casualties were observed. The stochastic technique with the site-dependent spectral model is used to simulate the strong ground motion parameters of this earthquake in the cities located at the western side of the Gulf of Suez and north Red Sea namely: Suez, Ain Sokhna, Zafarana, Ras Gharib, and Hurghada. The presence of many tourist resorts and the increase in land use planning in the considered cities represent the motivation of the current study. The simulated parameters comprise the Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), and Peak Ground Displacement (PGD), in addition to Pseudo Spectral Acceleration (PSA). The model developed for ground motion simulation is validated by using the recordings of three accelerographs installed around the epicenter of the investigated earthquake. Depending on the site effect that has been determined in the investigated areas by using geotechnical data (e.g., shear wave velocities and microtremor recordings), the investigated areas are classified into two zones (A and B). Zone A is characterized by higher site amplification than Zone B. The ground motion parameters are simulated at each zone in the considered areas. The results reveal that the highest values of PGA, PGV, and PGD are observed at Ras Gharib city (epicentral distance $ 11 km) as 67 cm/s 2 , 2.53 cm/s, and 0.45 cm respectively for Zone A, and as 26.5 cm/s 2 , 1.0 cm/s, and 0.2 cm respectively for Zone B, while the lowest values of PGA, PGV, and PGD are observed at Suez city (epicentral distance $ 190 km) as 3.0 cm/s 2 , 0.2 cm/s, and 0.05 cm/s respectively for Zone A, and as 1.3 cm/s 2 , 0.1 cm/s, and 0.024 cm respectively for Zone B. Also the highest PSA values are observed in Ras Gharib city as 200 cm/s 2 and 78 cm/s 2 for Zone A and Zone B respectively, while the lowest PSA values are observed in Suez city as 7 cm/s 2 and

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Section: Discussionmentioning

confidence: 99%

Section: Fig 5 H/v Spectral Ratio Curves Obtained At Zone a In Rasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of strong ground motion parameters of the 1 June 2013 Gulf of Suez earthquake, Egypt

Toni

2017

NRIAG Journal of Astronomy and Geophysics

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Seismicity and Seismotectonic of North Africa: An Updated Review

Toni,

Badreldin,

El Fellah

2024

Regional Geology Reviews

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Crustal thickness and structural pattern evaluation of Sinai Peninsula using three-dimensional density modeling with aeromagnetic and earthquake data

2022

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The Sinai Peninsula is a subplate located between the African and Arabian plates. It is an important subplate in the world; however, this region is poorly understood because of the shortage of geophysical data. Thus, this study focuses on built a three-dimensional (3D) high-resolution forward model of the crustal thickness with a new tectonic model and structural evaluation of the Sinai Peninsula to understand this area tectonically and determine its lithospheric and crustal thicknesses. Qualitative and quantitative interpretations of Bouguer gravity, reduced-to-the-pole (RTP) aeromagnetic, and earthquake data are explained to achieve the goals of this study. Two-dimensional (2D) interactive sequential modeling of gravity data is performed along with some well-selected profiles with existing crustal layer depth points from previous works in the studied region. Seventeen 2D models are constructed and used to determine the basement, Conrad (lower crust boundary), and Moho (upper mantle boundary) depths and to build a 3D model. Accuracy of the 3D built model is evaluated by extracting observed, calculated, and residual gravity anomaly maps. The results show that the basement rocks appear on the surface in the South of Sinai and deepen (down to 4.5 km) toward the North. The Conrad surface varies approximately from 16 km (in the northeast and southwest of Sinai) to 22.8 km (in the southeast). The Moho surface depth (i.e., crustal thickness) varies approximately from 28.8 to 34.2 km, and it deepens toward the northeastern and southwestern parts of Sinai. A tentative basement structure map is constructed from the horizontal gradient (H-gradient) filter and the 3D Euler deconvolution of the Bouguer gravity and RTP aeromagnetic data. Correlation between the geological background of the study area and the obtained results suggests that the Sinai Peninsula is tectonically active, mainly in its southern portion due to the tectonic movements along the Gulf of Suez and the Gulf of Aqaba. The crustal thickness increases southward and thins northward.

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Analysis of the similar epicenter earthquakes on 22 January 2013 and 01 June 2013, Central Gulf of Suez, Egypt

Cited by 10 publications

References 26 publications

Simulation of strong ground motion parameters of the 1 June 2013 Gulf of Suez earthquake, Egypt

Simulation of strong ground motion parameters of the 1 June 2013 Gulf of Suez earthquake, Egypt

Seismicity and Seismotectonic of North Africa: An Updated Review

Crustal thickness and structural pattern evaluation of Sinai Peninsula using three-dimensional density modeling with aeromagnetic and earthquake data

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