Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024107 |
Deposition Potential and Flow-Response Dynamics of Emergent Sandbars in a Braided River | |
Alexander, Jason S.1; McElroy, Brandon1; Huzurbazar, Snehalata2; Elliott, Caroline3; Murr, Marissa L.1 | |
2020 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Sandbars are ubiquitous in sandy-braided rivers throughout the world. In the Great Plains of the United States, recovery and expansion of emergent sandbar habitat (ESH) has been a priority in lowland rivers where the natural extent of sandbars has been degraded. Recovery efforts are aimed at protection of populations of the interior least tern (Sterna antillarum) and piping plover (Charadrius melodus). But quantitative observations of deposition and erosion dynamics of populations of sandbars across long segments of rivers are rare. We present a three-part case study which used Bayesian regression models to examine relations between hydrology, channel morphology, and ESH responses in the Platte River, eastern Nebraska. Logistic regression indicates presence of ESH is positively related to the Parker, (1976, https://doi.org/10.1017/S0022112076000748) stability criterion and a gradient in sediment transport mode, and negatively related to presence of vegetation. Hierarchical linear regression modeling shows direct coupling between sandbar top-surface height and formative flood magnitude, but the gap between formative flood stage and sandbar top-surface increases with increasing discharge. Finally, linear regression modeling of sandbar erosion demonstrates rates of ESH erosion are on the order of 10(-1) ha/day during high-flow periods and 10(-2) during low-flow periods, but sandbar persistence is largely a function of sandbar starting size. The collective observations highlight the importance of large floods (>3-year recurrence) in creating very large sandbars that persist as high-quality ESH over periods of years whereas lower-magnitude, more-frequent flood events create lower-quality ESH that typically does not persist into the following nesting season. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000520132500009 |
WOS关键词 | LOWER PLATTE RIVER ; PLOVERS CHARADRIUS-MELODUS ; MISSOURI RIVER ; LEAST TERN ; PIPING PLOVER ; CHANNEL WIDTH ; NEBRASKA ; BARS ; EVOLUTION ; PATTERNS |
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/280464 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Wyoming, Dept Geol & Geophys, Laramie, WY 82071 USA; 2.West Virginia Univ, Dept Biostat, Morgantown, WV 26506 USA; 3.US Geol Survey, Columbia Environm Res Ctr, Columbia, MO USA |
推荐引用方式 GB/T 7714 | Alexander, Jason S.,McElroy, Brandon,Huzurbazar, Snehalata,et al. Deposition Potential and Flow-Response Dynamics of Emergent Sandbars in a Braided River[J]. WATER RESOURCES RESEARCH,2020,56(1). |
APA | Alexander, Jason S.,McElroy, Brandon,Huzurbazar, Snehalata,Elliott, Caroline,&Murr, Marissa L..(2020).Deposition Potential and Flow-Response Dynamics of Emergent Sandbars in a Braided River.WATER RESOURCES RESEARCH,56(1). |
MLA | Alexander, Jason S.,et al."Deposition Potential and Flow-Response Dynamics of Emergent Sandbars in a Braided River".WATER RESOURCES RESEARCH 56.1(2020). |
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