Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s10584-017-1954-8 |
How can climate change and engineered water conveyance affect sediment dynamics in the San Francisco Bay-Delta system? | |
Achete, Fernanda1; van der Wegen, Mick1,2,3; Roelvink, Jan Adriaan1,2,4; Jaffe, Bruce5 | |
2017-06-01 | |
发表期刊 | CLIMATIC CHANGE |
ISSN | 0165-0009 |
EISSN | 1573-1480 |
出版年 | 2017 |
卷号 | 142 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; USA |
英文摘要 | Suspended sediment concentration is an important estuarine health indicator. Estuarine ecosystems rely on the maintenance of habitat conditions, which are changing due to direct human impact and climate change. This study aims to evaluate the impact of climate change relative to engineering measures on estuarine fine sediment dynamics and sediment budgets. We use the highly engineered San Francisco Bay-Delta system as a case study. We apply a process-based modeling approach (Delft3D-FM) to assess the changes in hydrodynamics and sediment dynamics resulting from climate change and engineering scenarios. The scenarios consider a direct human impact (shift in water pumping location), climate change (sea level rise and suspended sediment concentration decrease), and abrupt disasters (island flooding, possibly as the results of an earthquake). Levee failure has the largest impact on the hydrodynamics of the system. Reduction in sediment input from the watershed has the greatest impact on turbidity levels, which are key to primary production and define habitat conditions for endemic species. Sea level rise leads to more sediment suspension and a net sediment export if little room for accommodation is left in the system due to continuous engineering works. Mitigation measures like levee reinforcement are effective for addressing direct human impacts, but less effective for a persistent, widespread, and increasing threat like sea level rise. Progressive adaptive mitigation measures to the changes in sediment and flow dynamics resulting from sea level rise may be a more effective strategy. Our approach shows that a validated process-based model is a useful tool to address long-term (decades to centuries) changes in sediment dynamics in highly engineered estuarine systems. In addition, our modeling approach provides a useful basis for long-term, process-based studies addressing ecosystem dynamics and health. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401452700006 |
WOS关键词 | JOAQUIN DELTA ; CALIFORNIA ; COASTAL ; SACRAMENTO ; IMPACTS ; FLUX |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/30000 |
专题 | 气候变化 |
作者单位 | 1.UNESCO IHE, Dept Coastal Engn & Port Dev, POB 3015, NL-2601 DA Delft, Netherlands; 2.Deltares, Boussinesqweg 1,POB 177, NL-2629 HV Delft, Netherlands; 3.Deltares, POB 177, NL-2600 MH Delft, Netherlands; 4.Delft Univ Technol, Stevinweg 1, NL-2628 CN Delft, Netherlands; 5.US Geol Survey Ctr, 400 Nat Bridges Dr, Santa Cruz, CA 95060 USA |
推荐引用方式 GB/T 7714 | Achete, Fernanda,van der Wegen, Mick,Roelvink, Jan Adriaan,et al. How can climate change and engineered water conveyance affect sediment dynamics in the San Francisco Bay-Delta system?[J]. CLIMATIC CHANGE,2017,142. |
APA | Achete, Fernanda,van der Wegen, Mick,Roelvink, Jan Adriaan,&Jaffe, Bruce.(2017).How can climate change and engineered water conveyance affect sediment dynamics in the San Francisco Bay-Delta system?.CLIMATIC CHANGE,142. |
MLA | Achete, Fernanda,et al."How can climate change and engineered water conveyance affect sediment dynamics in the San Francisco Bay-Delta system?".CLIMATIC CHANGE 142(2017). |
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