Probabilistic estimates of the seismic ground motion hazard in western Saudi Arabia, Kingdom of Saudi Arabia

Thenhaus, P.C.; Algermissen, S.T.; Perkins, David M.; Hanson, Stanley L.; Diment, W.H.

doi:10.3133/ofr87173

Cited by 13 publications

(11 citation statements)

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“…The Gulf of Aqaba is characterized by the Neogene structural development of en-echelon rhomb-grabens and pull-apart basins which prove, in this transform plate boundaries condition, the deviation of the strike of the transform from the regional slip direction (Thenhaus et al, 1989).…”

Section: The Gulf Of Aqaba and Wadi Araba Provincementioning

confidence: 98%

“…The uncoupling of the two rifts has been determined since Middle Miocene times by the displacement of the left-lateral transform fault of the Gulf of Aqaba, Wadi Araba, and Dead Sea system (Colletta et al, 1988), characterized by the structural development of en-enchelon rhomb-grabens pull-apart basins (Thenhaus et al, 1989). The two northern branches of the Red Sea (the 60-80 km wide Gulf of Suez rift and the 30-40 km Gulf of Aqaba graben) separate the Sinai subplate from the African and Arabian shields.…”

Section: S T R U C T U R a L A N D T E C T O N I C S E T T I N Gmentioning

confidence: 99%

“…The wide deltaic deposits of the Nile river, moreover, cover the northern structures of the Gulf of Suez rift, even if a continuous physiographic depression persists along the northwestern projection of the Gulf of Suez central trough (Thenhaus et al, 1989).…”

Section: S T R U C T U R a L A N D T E C T O N I C S E T T I N Gmentioning

confidence: 99%

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Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

1992

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A seismological evaluation of the Red Sea margin is presented in this contribution based on the concept of seismotectonic regionalization. The geology and the tectonic structure are critically reviewed to define regions of homogeneous seismicity in the study area, and available seismicity data are implemented to estimate the seismic parameters of the region. The results of the study are applied to evaluate the seismic hazard of an offshore platform site.

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Section: The Gulf Of Aqaba and Wadi Araba Provincementioning

confidence: 98%

Section: S T R U C T U R a L A N D T E C T O N I C S E T T I N Gmentioning

confidence: 99%

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Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

1992

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“…Depending on the nature and depth of local soil deposits, the intensity of the seismic ground motions may be amplified and the frequency characteristics of the motions significantly (Thenhaus et al 1986;Al-Haddad et al 1994) indicated that the average value of PGA is about 100 cm/s 2 through area of study, but this value did not take the local site amplification factor into account. Recently and through the first microzoning study of the Yanbu metropolitan area Alyousef et al 2014), it is illustrated that the presence of very soft to soft sediments may amplify the ground motion more than six times that of bedrocks.…”

Section: Frequency-magnitude Relationshipmentioning

confidence: 99%

Seismic hazard assessment for Yanbu metropolitan area, western Saudi Arabia

et al. 2015

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The stochastic method is used to predict ground motions for Yanbu metropolitan area which has been affected by several earthquakes with the maximum magnitude of 6.8 in 1121 AD. The stochastic method has been used for simulating the time domain history for the peak ground acceleration (PGA), peak ground velocity (PGV), and peak ground displacement (PGD) at Yanbu metropolitan area. In addition, the response spectra at 3, 5, and 10 % of the damped pseudo-spectral acceleration (PSA) have been calculated at Al-Majd Sporting Club, Al-Maktabah, and Al-Shate Secondary School sites within the Yanbu metropolitan area. The results show that the values of PGA range from 137 to 388 cm/s 2 , PGV values vary from 8.96 to 25.5 cm/s, and PGD values range from 6.7 to 20.9 cm. The values of pseudospectral acceleration and predominant period are 974.53 cm/ s 2 (with 5 % damping) at 0.14 s for Al-Majd Sporting Club, 487.06 cm/s 2 at 0.19 s for Al-Maktabah site, and 700.83 cm/s 2 at 0.14 s for Al-Shate Secondary School. It is cleared that the values of ground motion parameters are amplified due to the presence of thick sections of very soft to soft sediments to more than six times those of the hard rocks. Furthermore, the estimated predominant periods from this study are correlated well with that of multichannel analysis of surface wave (MASW) approach. These results should be taken into account during design and construction of civil engineering structures within the Yanbu metropolitan area.

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“…McKenzi et al (1970) proposed a kinematic model for the evolution of a Red Sea rift, Aden Gulf, and the East African Rift system. Seismic hazards assessment of the Arabian Peninsula, Saudi Arabia and southern Red Sea have been estimated (e.g., Bararzangi 1981;Thenhaus et al 1986;Al-Haddad et al 1994, Al-Amri 1995bAl-Amri et al 2004a). According to this study, the Red Sea rift can be divided into three distinct tectonic parts: the northern, southern, and central parts (Izzeldin 1987, Martinez andCochran 1988).…”

Section: Introductionmentioning

confidence: 99%

Seismic characteristics and kinematic models of Makkah and central Red Sea regions

Al-Saud

2008

Arab J Geosci

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Makkah and central Red Sea regions have been re-evaluated from recent earthquake data analysis. Epicenters of recent seismic activity are concentrated in three local seismic zones. These are Ad Damm fault (NE), Nu'man-Makkah-Fatima (NW), and Jeddah-Red Sea (NW) seismic zones. Moreover, an extended seismic zone along the central part of Red Sea is observed. Most of these epicenters are distributed along tectonic faults, as indicated from the subsurface structure analysis of the aeromagnetic anomaly map. Some epicenters of small magnitudes are inaccurately located. The study indicates the existence of large active structural basin south of Makkah region, which traverse Ad Damm fault zone with the Red Sea transform faults. Slip vector analyses were carried out for 50 available earthquake focal mechanisms around Makkah region. In Nu'man, Makkah, and Fatima structural zones, the slip vectors generally trend NW and NNW. However, in the southern part at the Ad Dam structure zone, the slip vector trends NE-SW. These may result from the current complicated drifting motion of Arabian plate away from African plate combined with the opening of the Red Sea rift.

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Probabilistic estimates of the seismic ground motion hazard in western Saudi Arabia, Kingdom of Saudi Arabia

Cited by 13 publications

References 0 publications

Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

Seismic hazard assessment for Yanbu metropolitan area, western Saudi Arabia

Seismic characteristics and kinematic models of Makkah and central Red Sea regions

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