Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077933 |
Crevasse Splays Versus Avulsions: A Recipe for Land Building With Levee Breaches | |
Nienhuis, Jaap H.1,2,3; Tornqvist, Torbjorn E.1; Esposito, Christopher R.1,4 | |
2018-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:9页码:4058-4067 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Netherlands |
英文摘要 | Natural-levee breaches can not only initiate an avulsion but also, under the right circumstances, lead to crevasse splay formation and overbank sedimentation. The formative conditions for crevasse splays are not well understood, yet such river sediment diversions form an integral part of billion-dollar coastal restoration projects. Here we use Delft3D to investigate the influence of vegetation and soil consolidation on the evolution of a natural-levee breach. Model simulations show that crevasse splays heal because floodplain aggradation reduces the water surface slope, decreasing water discharge into the flood basin. Easily erodible and unvegetated floodplains increase the likelihood for channel avulsions. Denser vegetation and less potential for soil consolidation result in small crevasse splays that are not only efficient sediment traps but also short-lived. Successful crevasse splays that generate the largest land area gain for the imported sediment require a delicate balance between water and sediment discharge, vegetation root strength, and soil consolidation. |
英文关键词 | river avulsion soil consolidation crevasse splay vegetation sediment diversion Delft3D |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434111700035 |
WOS关键词 | SHEAR-STRENGTH ; RIVER AVULSION ; DELTA-PLAIN ; FLOODPLAIN ; DEPOSITION ; EROSION ; BELT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27642 |
专题 | 气候变化 |
作者单位 | 1.Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA; 2.Wageningen Univ, Dept Environm Sci, Wageningen, Netherlands; 3.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA; 4.Water Inst Gulf, Baton Rouge, LA USA |
推荐引用方式 GB/T 7714 | Nienhuis, Jaap H.,Tornqvist, Torbjorn E.,Esposito, Christopher R.. Crevasse Splays Versus Avulsions: A Recipe for Land Building With Levee Breaches[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4058-4067. |
APA | Nienhuis, Jaap H.,Tornqvist, Torbjorn E.,&Esposito, Christopher R..(2018).Crevasse Splays Versus Avulsions: A Recipe for Land Building With Levee Breaches.GEOPHYSICAL RESEARCH LETTERS,45(9),4058-4067. |
MLA | Nienhuis, Jaap H.,et al."Crevasse Splays Versus Avulsions: A Recipe for Land Building With Levee Breaches".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4058-4067. |
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