DOI: 10.5194/hess-19-2837-2015
Scopus记录号: 2-s2.0-84934976544
论文题名: A 2-D process-based model for suspended sediment dynamics: A first step towards ecological modeling
作者: Achete F ; M ; , Van Der Wegen M ; , Roelvink D ; , Jaffe B
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 6 起始页码: 2837
结束页码: 2857
语种: 英语
Scopus关键词: Budget control
; Chains
; Climate change
; Climate models
; Dynamics
; Ecology
; Ecosystems
; Estuaries
; Sediment transport
; Sedimentation
; Sediments
; Sensitivity analysis
; Turbidity
; Ecological parameters
; Management scenarios
; Process-based approach
; Process-based modeling
; San francisco estuaries
; Sediment transport model
; Spatial and temporal scale
; Suspended sediment concentrations
; Suspended sediments
; calibration
; climate change
; data set
; delta
; ecological modeling
; estuarine environment
; estuarine sediment
; geometry
; habitat type
; hydrodynamic force
; numerical model
; phytoplankton
; pollutant
; prediction
; sediment budget
; sediment transport
; sensitivity analysis
; simulation
; software
; spatiotemporal analysis
; suspended sediment
; turbidity
; two-dimensional modeling
; California
; San Francisco Estuary
; United States
英文摘要: In estuaries suspended sediment concentration (SSC) is one of the most important contributors to turbidity, which influences habitat conditions and ecological functions of the system. Sediment dynamics differs depending on sediment supply and hydrodynamic forcing conditions that vary over space and over time. A robust sediment transport model is a first step in developing a chain of models enabling simulations of contaminants, phytoplankton and habitat conditions. This works aims to determine turbidity levels in the complex-geometry delta of the San Francisco estuary using a process-based approach (Delft3D Flexible Mesh software). Our approach includes a detailed calibration against measured SSC levels, a sensitivity analysis on model parameters and the determination of a yearly sediment budget as well as an assessment of model results in terms of turbidity levels for a single year, water year (WY) 2011. Model results show that our process-based approach is a valuable tool in assessing sediment dynamics and their related ecological parameters over a range of spatial and temporal scales. The model may act as the base model for a chain of ecological models assessing the impact of climate change and management scenarios. Here we present a modeling approach that, with limited data, produces reliable predictions and can be useful for estuaries without a large amount of processes data. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78489
Appears in Collections: 气候变化事实与影响
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作者单位: UNESCO-IHE, Delft, Netherlands; Deltares, Delft, Netherlands; Delft University of Technology, Delft, Netherlands; US Geological Survey Pacific Science Center, Santa Cruz, CA, United States
Recommended Citation:
Achete F,M,, Van Der Wegen M,et al. A 2-D process-based model for suspended sediment dynamics: A first step towards ecological modeling[J]. Hydrology and Earth System Sciences,2015-01-01,19(6)