Arid
DOI10.2166/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
ISSN0029-1277
EISSN2224-7955
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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