DOI: 10.1002/2016GL070576
论文题名: Effects of unstable flow on solute transport in the marsh soil and exchange with coastal water
作者: Shen C. ; Zhang C. ; Jin G. ; Kong J. ; Li L.
刊名: Geophysical Research Letters
ISSN: 0094-8333
EISSN: 1944-8064
出版年: 2016
卷: 43, 期: 23 起始页码: 12091
结束页码: 12101
语种: 英语
英文关键词: coastal water quality
; coastal wetland
; density-dependent flow
; salt marshes
; solute transport
; unstable flow
Scopus关键词: Soils
; Water
; Water quality
; Wetlands
; Coastal water quality
; Coastal wetlands
; Density dependent flow
; Salt marshes
; Unstable flows
; Solute transport
英文摘要: Recent studies of marsh hydraulics have focused on tide-induced pore water circulation as the main drive for solute transport in the marsh soil and exchange with coastal water. Our study revealed another important mechanism provided by unstable fingering flow, which largely modified solute transport paths. In the marsh interior, downward penetration of salt fingers forced ambient pore water and solute plumes to move upward and exit the marsh soil through marsh platform at relatively high concentrations, up to 2 orders of magnitude higher than exit solute concentrations at the tidal creek bed. The mixing of solute with ambient pore water in the marsh interior was intensified greatly by fingering flow. A critical distance to the creek was determined based on a field-scale model simulation to distinguish tidal circulation-dominated and fingering flow-dominated solute transport zones. The new transport mechanism has implications for understanding the fate of solutes in particularly salt marshes of low creek densities. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007415264&doi=10.1002%2f2016GL070576&partnerID=40&md5=82ce4a6f57008bb63c0687572c78c783
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9296
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China
Recommended Citation:
Shen C.,Zhang C.,Jin G.,et al. Effects of unstable flow on solute transport in the marsh soil and exchange with coastal water[J]. Geophysical Research Letters,2016-01-01,43(23).