Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075608 |
Turbidity Currents With Equilibrium Basal Driving Layers: A Mechanism for Long Runout | |
Luchi, R.1; Balachandar, S.2; Seminara, G.3; Parker, G.1,4 | |
2018-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:3页码:1518-1526 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Italy |
英文摘要 | Turbidity currents run out over 100 km in lakes and reservoirs, and over 1,000 km in the ocean. They do so without dissipating themselves via excess entrainment of ambient water. Existing layer-averaged formulations cannot capture this. We use a numerical model to describe the temporal evolution of a turbidity current toward steady state under condition of zero net sediment flux at the bed. The flow self-partitions itself into two layers. The lower driving layer approaches an invariant flow thickness, velocity profile, and suspended sediment concentration profile that sequesters nearly all of the suspended sediment. This layer can continue indefinitely at steady state over a constant bed slope. The upper driven layer contains a small fraction of the suspended sediment. The devolution of the flow into these two layers likely allows the driving layer to run out long distances. |
英文关键词 | turbidity currents long runout driving layer equilibrium saline currents fall velocity |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426161800038 |
WOS关键词 | DIAPIRIC MINIBASINS ; VERTICAL STRUCTURE ; CONTINENTAL-SLOPE ; CHANNEL ; SEDIMENT ; TURBULENCE ; FLOW ; ENTRAINMENT ; DYNAMICS ; VELOCITY |
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/27173 |
专题 | 气候变化 |
作者单位 | 1.Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA; 2.Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL USA; 3.Univ Genoa, Dept Civil Chem & Environm Engn, Genoa, Italy; 4.Univ Illinois, Dept Geol, Urbana, IL USA |
推荐引用方式 GB/T 7714 | Luchi, R.,Balachandar, S.,Seminara, G.,et al. Turbidity Currents With Equilibrium Basal Driving Layers: A Mechanism for Long Runout[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(3):1518-1526. |
APA | Luchi, R.,Balachandar, S.,Seminara, G.,&Parker, G..(2018).Turbidity Currents With Equilibrium Basal Driving Layers: A Mechanism for Long Runout.GEOPHYSICAL RESEARCH LETTERS,45(3),1518-1526. |
MLA | Luchi, R.,et al."Turbidity Currents With Equilibrium Basal Driving Layers: A Mechanism for Long Runout".GEOPHYSICAL RESEARCH LETTERS 45.3(2018):1518-1526. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论