Arid
DOI10.5047/eps.2012.12.005
Fault orientations in the upper crust beneath an intraplate active zone in northern Egypt
Abdel-Fattah, A. K.1; Fnais, M.1; Abdelwahed, M. F.2,3; El-Nekhely, A.4; Farid, W.3
通讯作者Abdel-Fattah, A. K.
来源期刊EARTH PLANETS AND SPACE
ISSN1880-5981
出版年2013
卷号65期号:7页码:739-748
英文摘要

The present study aims to demarcate the active fault orientation in the upper crust of Dahshour Seismic Zone (DSZ) in Northern Egypt, and its relation to the regional tectonics. High-resolution earthquake relocations and focal mechanism solutions were determined using the double-difference location method and the forward modelling of the amplitude spectrum constrained with P-wave polarities, respectively. Up to 244 earthquakes were relocated by measuring differential travel times between events, as obtained from cross-correlation waveform analysis. The relocated hypocenters exhibited a seismogenic crust of 6-km thickness (most hypocenters have a focal depth of 18 to 24 km). Incorporation of hypocentral distributions and focal mechanisms depicts distinct fault planes trending to the NW and ENE to EW, randomly distributed in the whole dislocation zone. The reactivation of these pre-existing faults is attributed to the northern Red Sea-Gulf of Suez rifts and the closure of the Neotethys, respectively; implying a potential impact of the regional tectonic process on the deformation acting in the upper crust of the local seismogenic zones of northern Egypt.


英文关键词Earthquake relocation double-difference technique focal mechanism North Egypt seismotectonics
类型Article
语种英语
国家Saudi Arabia ; Egypt
收录类别SCI-E
WOS记录号WOS:000324049700006
WOS关键词FORM CROSS-CORRELATION ; EARTHQUAKE LOCATIONS ; SOURCE PARAMETERS ; EASTERN DESERT ; BENI-SUEF ; CONSTRAINTS ; RELOCATION ; GEOMETRY ; SYSTEM ; MOTION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构King Saud University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176627
作者单位1.King Saud Univ, Fac Sci, Dept Geol & Geophys, Riyadh 11451, Saudi Arabia;
2.King Abdulaziz Univ, Geol Hazards Res Unit, Jeddah 21589, Saudi Arabia;
3.NRIAG, Helwan 11421, Egypt;
4.Univ Alexandria, Fac Sci, Dept Phys, Alexandria, Egypt
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GB/T 7714
Abdel-Fattah, A. K.,Fnais, M.,Abdelwahed, M. F.,et al. Fault orientations in the upper crust beneath an intraplate active zone in northern Egypt[J]. King Saud University,2013,65(7):739-748.
APA Abdel-Fattah, A. K.,Fnais, M.,Abdelwahed, M. F.,El-Nekhely, A.,&Farid, W..(2013).Fault orientations in the upper crust beneath an intraplate active zone in northern Egypt.EARTH PLANETS AND SPACE,65(7),739-748.
MLA Abdel-Fattah, A. K.,et al."Fault orientations in the upper crust beneath an intraplate active zone in northern Egypt".EARTH PLANETS AND SPACE 65.7(2013):739-748.
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