Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jafrearsci.2013.04.007 |
Three-dimensional structure of Conrad and Moho discontinuities in Egypt | |
Abdelwahed, Mohamed F.1,3; El-Khrepy, Sami2,3; Qaddah, Atef1 | |
通讯作者 | Abdelwahed, Mohamed F. |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES
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ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2013 |
卷号 | 85页码:87-102 |
英文摘要 | The three-dimensional structures of Conrad and Moho discontinuities beneath Egypt are investigated by local earthquake travel time inversion. A number of 2513 events with 24,696 arrival time data recorded by the Egyptian National Seismic Network (ENSN) are used. The station corrections of P- and S-waves and the hypocentral parameters are simultaneously estimated with the Conrad and Moho depths. The results of this study show that the discontinuities form patterns of shallow and deep structures getting shallow toward the northern and eastern coast, and deeper toward western Desert and northeastern Sinai. The Conrad and Moho discontinuities are located within the depth range 9-17 km and 27-41 km, respectively. The depth ranges of Conrad and Moho discontinuities are respectively: 15-16 km and 31-33 km in greater Cairo and Dahshour; 15-18 km and 32-35 km in Sinai; 16-17 and 33-35 km along the Nile River; 9 and 30 km near the Red Sea coast; 15 and 39 km toward the western desert. The comprehensive comparison with previous crustal studies suggests that the main patterns of Moho undulations and the range of Moho depths are in good agreement with the previous crustal models in Egypt, as well as with the Bouguer gravity anomalies that well explain the Nile River sediments, Red Sea mountain belts and Western Desert depression and Oasis. The model of the Moho and Conrad discontinuities improves knowledge of the three dimensional structure of the crust beneath Egypt in wide areas where geophysical data is sparse. (C) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | Crustal structure Conrad discontinuity Moho discontinuity Travel time inversion Egypt |
类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia ; Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000322556700008 |
WOS关键词 | NORTHERN RED-SEA ; 2-DIMENSIONAL DEPTH STRUCTURE ; WAVE VELOCITY STRUCTURE ; NORTHEASTERN JAPAN ARC ; CRUSTAL STRUCTURE ; P-WAVE ; UPPERMOST MANTLE ; TOHOKU DISTRICT ; GRAVITY-FIELD ; BENEATH |
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/2XILL650/177890 |
作者单位 | 1.King Abdulaziz Univ, Geol Hazards Res Unit, Jeddah 21589, Saudi Arabia; 2.King Saud Univ, Riyadh 11451, Saudi Arabia; 3.NRIAG, Natl Res Inst Astron & Geophys, Cairo 11421, Egypt |
推荐引用方式 GB/T 7714 | Abdelwahed, Mohamed F.,El-Khrepy, Sami,Qaddah, Atef. Three-dimensional structure of Conrad and Moho discontinuities in Egypt[J]. King Saud University,2013,85:87-102. |
APA | Abdelwahed, Mohamed F.,El-Khrepy, Sami,&Qaddah, Atef.(2013).Three-dimensional structure of Conrad and Moho discontinuities in Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,85,87-102. |
MLA | Abdelwahed, Mohamed F.,et al."Three-dimensional structure of Conrad and Moho discontinuities in Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 85(2013):87-102. |
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