GSTDTAP  > 资源环境科学
DOI10.1029/2019WR025222
The Dynamics of Suspended Sediment in a Typical Alpine Alluvial River Reach: Insight From a Seasonal Survey
Misset, C.1; Recking, A.1; Legout, C.2; Valsangkar, N.1; Bodereau, N.1; Zanker, S.3; Poirel, A.3; Borgniet, L.1
2019-12-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2019
卷号55期号:12页码:10918-10934
文章类型Article
语种英语
国家France
英文摘要

The transport of suspended sediment is associated with important social, economic, and environmental issues. It is still unclear, however, how suspended sediments eroded on hillslopes are transferred downstream through the river system. In this study, we aimed to investigate this process by applying a sediment budget approach to a typical 3.5-km-long Alpine braided reach. Using high-frequency suspended load measurements combined with Monte Carlo simulations for uncertainty propagation, we observed a significant buffering behavior of the reach studied. Thirty-two of the 48 events observed during the 2-month campaign showed significant differences between upstream and downstream mass transported as suspension, despite the reach studied was short compared to the upstream drainage area (130 km(2)). These differences at the event scale varied widely within an envelope comprised between a net erosion equivalent to 74% of upstream suspended mass and a net deposition equivalent to 71%. Budgets were found to be controlled at a nearly instantaneous time scale by the liquid discharges and the suspended sediment concentrations in an opposite way: for low upstream concentrations, net erosion increased when the discharges increased, while above a certain concentration, net deposition increased when the concentrations increased. Moreover, coarse particles mobility in the reach (characterized via bedload transport measurements) appeared to have a strong influence on the availability of suspended particles as both quantities evolved concomitantly through time. These observations have important implications for our understanding and modeling of the transfer of suspended particles in gravel bedded streams.


领域资源环境
收录类别SCI-E
WOS记录号WOS:000509943100047
WOS关键词BEDLOAD TRANSPORT ; FINE-PARTICLE ; BRAIDED RIVER ; STORAGE ; LOAD ; PATTERNS ; CHANNEL ; VARIABILITY ; DEPOSITION ; GLACIER
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/223946
专题资源环境科学
作者单位1.Univ Grenoble Alpes, ETNA, IRSTEA, Grenoble, France;
2.Univ Grenoble Alpes, IGE, Grenoble INP, CNRS,IRD, Grenoble, France;
3.EDP, DTG, Grenoble, France
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GB/T 7714
Misset, C.,Recking, A.,Legout, C.,et al. The Dynamics of Suspended Sediment in a Typical Alpine Alluvial River Reach: Insight From a Seasonal Survey[J]. WATER RESOURCES RESEARCH,2019,55(12):10918-10934.
APA Misset, C..,Recking, A..,Legout, C..,Valsangkar, N..,Bodereau, N..,...&Borgniet, L..(2019).The Dynamics of Suspended Sediment in a Typical Alpine Alluvial River Reach: Insight From a Seasonal Survey.WATER RESOURCES RESEARCH,55(12),10918-10934.
MLA Misset, C.,et al."The Dynamics of Suspended Sediment in a Typical Alpine Alluvial River Reach: Insight From a Seasonal Survey".WATER RESOURCES RESEARCH 55.12(2019):10918-10934.
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