干旱区生态环境知识资源中心(Arid): Seasonality in Intermittent Streamflow Losses Beneath a Semiarid Mediterranean Wadi

Arid

DOI	10.1029/2021WR029743
	Seasonality in Intermittent Streamflow Losses Beneath a Semiarid Mediterranean Wadi
	Fakir, Younes; Bouimouass, Houssne; Constantz, Jim
通讯作者	Fakir, Y (corresponding author), Cadi Ayyad Univ, LMI TREMA, Lab GeoSci Semlalia, Marrakech, Morocco. ; Fakir, Y (corresponding author), CRSA Ctr Remote Sensing Applicat, UM6P, Benguerir, Morocco.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2021
卷号	57 期号:6
英文摘要	Streamflow losses beneath ephemeral and intermittent streams are potentially major contributors to groundwater recharge. Compared to ephemeral streams, intermittent streams often have more than one season of streamflow and often experience shorter zero-flow periods during the dry seasons and typically longer wet season of steady streamflow. Intermittent streams losses are lacking significant investigation on their variability over wet and dry season, and on the influence on potential groundwater recharge of flooding streamflow compared with more gradual wet seasonal baseflow. To address these issues, both streambed-sediment water content and temperature were continuously logged over a year for an intermittent stream (wadi) under semi-arid conditions in Central Morocco. Water content measurements uniquely distinguished between downward percolation and upward advance of the wetting front due to the rise of the water table, whereas temperature modeling was used to estimate vertical fluxes of percolated water. For the year of data, more than 90% of the estimated potential recharge occurred during winter and spring, when the alluvium typically has a higher water moisture, with most recharge generated during flooding conditions. Winter and spring baseflow generally generated low infiltration, though importantly contributes to wetting the sediment for rapid, deep percolation during flooding. Alternatively, summer flashfloods over dry sediment resulted in shallower infiltration despite higher peak streamflows. Thus, clear seasonality (seasonal variation) in relations between amounts of streamflow, streamflow loss, and depth of wetting into the streambed were distinguished over the study year. Finally, lateral recharge was detected, leading to additional seasonal water-table fluctuation beneath the wadi.
英文关键词	Temperature water content streamflow infiltration groundwater recharge
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000667245100040
WOS关键词	HYDRAULIC CONDUCTIVITY ; GROUNDWATER RECHARGE ; TEMPERATURE PROFILES ; RIVER-BASIN ; INFILTRATION ; DYNAMICS ; FLOW ; SIMULATION ; TRANSPORT ; DESERT
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351990
作者单位	[Fakir, Younes; Bouimouass, Houssne] Cadi Ayyad Univ, LMI TREMA, Lab GeoSci Semlalia, Marrakech, Morocco; [Fakir, Younes] CRSA Ctr Remote Sensing Applicat, UM6P, Benguerir, Morocco; [Bouimouass, Houssne] Univ Avignon, Hydrogeol Lab, UMR EMMAH, Avignon, France; [Constantz, Jim] US Geol Survey, Scientist Emeritus Program, 345 Middlefield Rd, Menlo Pk, CA 94025 USA
推荐引用方式 GB/T 7714	Fakir, Younes,Bouimouass, Houssne,Constantz, Jim. Seasonality in Intermittent Streamflow Losses Beneath a Semiarid Mediterranean Wadi[J]. United States Geological Survey,2021,57(6).
APA	Fakir, Younes,Bouimouass, Houssne,&Constantz, Jim.(2021).Seasonality in Intermittent Streamflow Losses Beneath a Semiarid Mediterranean Wadi.WATER RESOURCES RESEARCH,57(6).
MLA	Fakir, Younes,et al."Seasonality in Intermittent Streamflow Losses Beneath a Semiarid Mediterranean Wadi".WATER RESOURCES RESEARCH 57.6(2021).