Flood hazard assessment and mapping in semi-arid piedmont areas: a case study in Beni Mellal, Morocco

被引：21
|
作者：
Werren, Gabriela [1 ]
Reynard, Emmanuel [1 ]
Lane, Stuart N. [1 ]
Balin, Daniela [1 ]
机构：
[1] Univ Lausanne, Lausanne, Switzerland
来源：
NATURAL HAZARDS | 2016年 / 81卷 / 01期
关键词：
Semi-arid catchments; Hydro-geomorphic mapping; Post-flood investigations; Hydrological-hydraulic modelling; Flood hazard assessment; Flood hazard mapping; FLASH-FLOODS; ALLUVIAL FANS; INUNDATION; PREDICTION; EVENTS; WATER; TIME;
D O I：
10.1007/s11069-015-2092-0
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Flood hazard assessment and mapping is challenging in semi-arid ungauged basins because of the lack of data, the rapid runoff response, climatic variability, and the difficulties of modelling hydraulic processes, such as on piedmont alluvial fans. This study combines hydrological and hydraulic modelling with hydro-geomorphic knowledge gathered during post-flood campaigns in order to determine realistic flood hazard scenarios for a piedmont urban area in Morocco. Partial calibration of the hydrological and hydraulic models is performed using field-estimated peak discharge values and mapped flood extents for known flood events. The calibrated models are then applied to lower frequency-higher magnitude flood scenarios. Finally, a flood hazard map is designed using the Swiss hazard assessment and mapping procedures.
引用
收藏
页码：481 / 511
页数：31
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