DOI: 10.5194/hess-20-1355-2016
Scopus记录号: 2-s2.0-84966440567
论文题名: Recent changes in climate, hydrology and sediment load in the Wadi Abd, Algeria (1970–2010)
作者: Achite M ; , Ouillon S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期: 4 起始页码: 1355
结束页码: 1372
语种: 英语
Scopus关键词: Hydrology
; Precipitation (meteorology)
; Rain
; Sediment transport
; Sedimentation
; Sediments
; Cascading effects
; Hydrologic regime
; Hydrological regime
; Hydrological years
; Hysteresis phenomenon
; Sediment regimes
; Suspended particulates
; Suspended sediment concentrations
; Suspended sediments
; amplification
; climate change
; concentration (composition)
; erosion control
; hydrology
; hysteresis
; particulate flux
; precipitation quality
; rainfall
; rating curve
; river discharge
; runoff
; sediment transport
; sediment yield
; summer
; suspended particulate matter
; suspended sediment
; time series
; Algeria
英文摘要: Here we investigate the changes of temperature, precipitation, river runoff and sediment transport in the Wadi Abd in northwest Algeria over a time series of 40 hydrological years (1970–2010). Temperature increased and precipitation decreased with the reduction in rainfall being relatively higher during the rainy season. A shift towards an earlier onset of first rains during summer was also found with cascading effects on hydrology (hydrological regimes, vegetation, etc.) and thus on erosion and sediment yield. During the 1980s, the flow regime shifted from perennial to intermittent with an amplification of the variations of discharge and a modification of the sediment regime with higher and more irregular suspended particulate flux. Sediment flux was shown to almost double every decade from the 1970s to the 2000s. The sediment regime shifted from two equivalent seasons of sediment yield (spring and fall) to a single major season regime. In the 2000s, autumn produced over 4 times more sediment than spring. The enhanced scatter of the C –Q pairs denotes an increase of hysteresis phenomena in the Wadi Abd that is probably related to the change in the hydrologic regime. At the end of the period, due to irregularity of the discharge, the ability of a rating curve to derive suspended sediment concentration from river discharge was poor. © Author(s) 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78876
Appears in Collections: 气候变化事实与影响
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作者单位: Laboratoire Eau-Environnement, Université Hassiba Ben Bouali, Hay Es-Salem, Chlef, Algeria; LEGOS, Université de Toulouse, IRD, CNRS, CNES, UPS, 14 avenue E. Belin, Toulouse, France; University of Science and Technology of Hanoi, Dept. Water-Environment-Oceanography, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
Recommended Citation:
Achite M,, Ouillon S. Recent changes in climate, hydrology and sediment load in the Wadi Abd, Algeria (1970–2010)[J]. Hydrology and Earth System Sciences,2016-01-01,20(4)