Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2166/nh.2012.172 |
Eolian and fluvial sedimentation in the southwestern Sinai Mountains, Egypt: a record of flash floods during the late Pleistocene | |
Voelkel, Joerg1; Grunert, Joerg2; Leopold, Matthias1; Huerkamp, Kerstin3; Huber, Juliane1; Murray, Andrew4 | |
通讯作者 | Voelkel, Joerg |
来源期刊 | HYDROLOGY RESEARCH
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ISSN | 0029-1277 |
EISSN | 2224-7955 |
出版年 | 2013 |
卷号 | 44期号:2页码:281-299 |
英文摘要 | Wadis emerging from the southwestern Sinai Mountains (Egypt) westwards to the Gulf of Suez are filled by >40 m thick late Pleistocene sediments, which have been subsequently incised to bedrock after the Last Glacial Maximum (LGM). Sedimentation and erosion resulted from changes in the basin’s hydrological conditions caused by climate variations. Sediment characteristics indicate distinct processes ranging from high to low energy flow regimes. Airborne material is important as a sediment source. The fills are associated with alluvial fans at wadi mouths at the mountain fronts. Each alluvial fan is associated and physically correlated with the respective sediment fill in its contributing wadi. The alluvial fans have steep gradients and are only a few kilometers long or wide. The alluvial fans converge as they emerge from the adjacent valleys. According to optically stimulated luminescence dating, the initial sediment has an age of similar to 45 ka and the sedimentation ends similar to 19 ka, i.e., happened mainly during marine isotope stage (MIS) 3 and early MIS 2 formation and initial incision sometime during LGM. As the delivery of sediments in such a hyper-arid environment is by extreme floods, this study indicates an interval of intense fluvial activity, probably related to increased frequency of extreme floods in Southern Sinai. This potentially indicates a paleoclimatic change in this hyper-arid environment. |
英文关键词 | alluvial fans flash floods late Pleistocene climate MIS 3 Sinai Mountains wadi fillings |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Denmark |
收录类别 | SCI-E |
WOS记录号 | WOS:000317708000007 |
WOS关键词 | STIMULATED LUMINESCENCE COMPONENTS ; NEGEV DESERT ; DOSE-RATES ; CATCHMENT ; LOESS |
WOS类目 | Water Resources |
WOS研究方向 | Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/177574 |
作者单位 | 1.Tech Univ Munich, Ctr Life & Food Sci Weihenstephan, Chair Geomorphol & Soil Sci, D-85350 Freising Weihenstephan, Germany; 2.Johannes Gutenberg Univ Mainz, Inst Geog, D-55099 Mainz, Germany; 3.Helmholtz Zentrum Munchen, Inst Radiat Protect, D-85764 Neuherberg, Germany; 4.Riso Natl Lab, Nord Lab Luminescence Dating, DK-4000 Roskilde, Denmark |
推荐引用方式 GB/T 7714 | Voelkel, Joerg,Grunert, Joerg,Leopold, Matthias,et al. Eolian and fluvial sedimentation in the southwestern Sinai Mountains, Egypt: a record of flash floods during the late Pleistocene[J],2013,44(2):281-299. |
APA | Voelkel, Joerg,Grunert, Joerg,Leopold, Matthias,Huerkamp, Kerstin,Huber, Juliane,&Murray, Andrew.(2013).Eolian and fluvial sedimentation in the southwestern Sinai Mountains, Egypt: a record of flash floods during the late Pleistocene.HYDROLOGY RESEARCH,44(2),281-299. |
MLA | Voelkel, Joerg,et al."Eolian and fluvial sedimentation in the southwestern Sinai Mountains, Egypt: a record of flash floods during the late Pleistocene".HYDROLOGY RESEARCH 44.2(2013):281-299. |
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