Arid
DOI10.1007/s11069-016-2723-0
Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco
Zkhiri, Wiam1; Tramblay, Yves2; Hanich, Lahoucine1; Berjamy, Brahim3
通讯作者Tramblay, Yves
来源期刊NATURAL HAZARDS
ISSN0921-030X
EISSN1573-0840
出版年2017
卷号86期号:2页码:953-967
英文摘要

In semi-arid catchments, the contribution of floods to annual runoff is important. The High Atlas Mountain catchments (N’Fis, Rheraya, Ourika, Zat and R’dat) located in the south of Morocco, upstream of the city of Marrakech, are an example of those basins where floods provide the main contribution to surface water resources. The goal of this study is to evaluate whether a regional flood frequency analysis could improve the estimation of the magnitude and the occurrence of floods in these mountainous catchments. The database considered is long-term measurement of daily discharge at the outlets with record length varying from 35 to 45 years. The index flood method is considered to build a regional model based on the generalized extreme values distribution. The results showed a contrasted seasonal behavior, with floods caused by either rainfall during the autumn season or a mix of rainfall and snowmelt for spring events. As a consequence, two distinct regional models have been computed, one for autumn and one for spring events. No significant trends have been found for seasonal maximum discharge in all the catchments. The results of the regional frequency analysis show that the regional model provides better flood quantiles estimates than a standard at-site model. However, there is a much greater uncertainty for both local and regional estimates of floods occurring during the autumn than during spring events, which are estimated with a good level of accuracy. This research provides insights into how to improve the estimation of flood return levels useful for water resources management in these semi-arid mountainous catchments.


英文关键词Floods Regional frequency analysis GEV Tensift Morocco Mountains
类型Article
语种英语
国家Morocco ; France
收录类别SCI-E
WOS记录号WOS:000394328400022
WOS关键词EXTREME EVENTS ; HYDROLOGY ; FRAMEWORK ; RAINFALL ; MAXIMUM ; CONTEXT ; SAMPLE ; AREAS
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201199
作者单位1.Univ Cadi Ayyad, Dept Sci Terre, Fac Sci & Tech, Lab Georessources,Unite Associee,CNRST URAC42, Ave A Khattabi,BP 549, Marrakech 40000, Morocco;
2.IRD Hydrosci Montpellier, UMR 5569, Montpellier, France;
3.Agence Bassin Hydraul Tensift, Marrakech 40000, Morocco
推荐引用方式
GB/T 7714
Zkhiri, Wiam,Tramblay, Yves,Hanich, Lahoucine,et al. Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco[J],2017,86(2):953-967.
APA Zkhiri, Wiam,Tramblay, Yves,Hanich, Lahoucine,&Berjamy, Brahim.(2017).Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco.NATURAL HAZARDS,86(2),953-967.
MLA Zkhiri, Wiam,et al."Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco".NATURAL HAZARDS 86.2(2017):953-967.
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