Arid
DOI10.1016/j.gloplacha.2009.11.013
Extreme floods and short-term hydroclimatological fluctuations in the hyper-arid Dead Sea region, Israel
Greenbaum, Noam1,2; Schwartz, Uri; Bergman, Nathaniel3
通讯作者Greenbaum, Noam
来源期刊GLOBAL AND PLANETARY CHANGE
ISSN0921-8181
出版年2010
卷号70期号:1-4页码:125-137
英文摘要

The autumn Active Red Sea Trough (ARST) rainstorm in the southern Dead Sea region on 29 October 2004 was documented using calibrated radar images, some rainfall measurements, and slope-area and HEC-RAS peak discharge estimates in several tributaries. The extreme rainstorm had a maximum intensity of 175 mm h(-1), a duration of 2 h, and rainfall amounts of up to 74 mm. The resulting flood in Nahal Zin (1400 km(2)), which increased downstream up to 1280 m(3) (probability of < 1%), was effectively contributed from the lower tributaries that constitute only 250 km(2) or 18% of the total drainage basin area. Specific peak discharges in small drainage basins (1-5 km(2)) exceeded 50 m(3) s(-1) km(-2), and for basins of 50 km(2) were up to 18 m(3) s(-1) km(-2). Re-plotting of the flood envelope curve was necessary, as it was exceeded by several floods at all catchment sizes. A recent increase in the frequency of extreme floods has been recognized in flood studies in the Negev, northern Israel, and across the wider eastern Mediterranean basin. This increase is reflected in other palaeohydrological and palaeoclimatological evidence in the southern Levant such as the levels of the Dead Sea, but contradicts hydroclimatological trends in the western Mediterranean that are correlated to the NAO index, suggesting that these are quite different hydroclimatological environments. (C) 2009 Elsevier B.V. All rights reserved.


英文关键词Dead Sea extreme rainstorm ephemeral streams peak discharge specific discharge flood envelope curve flood frequency
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000276040100012
WOS关键词NORTH-ATLANTIC OSCILLATION ; MEDITERRANEAN RAINFALL VARIABILITY ; NEGEV DESERT ; NAHAL-ZIN ; TRANSMISSION LOSSES ; RUNOFF EVENTS ; MAJOR FLOODS ; CLIMATE ; PRECIPITATION ; MAGNITUDE
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/164381
作者单位1.Univ Haifa, Dept Geog & Environm Studies, IL-31905 Haifa, Israel;
2.Univ Haifa, Dept Nat Resources & Environm Management, IL-31905 Haifa, Israel;
3.Bldg & Infrastruct Lab Ltd, IL-32232 Haifa, Israel
推荐引用方式
GB/T 7714
Greenbaum, Noam,Schwartz, Uri,Bergman, Nathaniel. Extreme floods and short-term hydroclimatological fluctuations in the hyper-arid Dead Sea region, Israel[J],2010,70(1-4):125-137.
APA Greenbaum, Noam,Schwartz, Uri,&Bergman, Nathaniel.(2010).Extreme floods and short-term hydroclimatological fluctuations in the hyper-arid Dead Sea region, Israel.GLOBAL AND PLANETARY CHANGE,70(1-4),125-137.
MLA Greenbaum, Noam,et al."Extreme floods and short-term hydroclimatological fluctuations in the hyper-arid Dead Sea region, Israel".GLOBAL AND PLANETARY CHANGE 70.1-4(2010):125-137.
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