Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5047/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
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ISSN | 1880-5981 |
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 |
推荐引用方式 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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