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DOI	10.5194/hess-23-2763-2019
	Sediment budget analysis of the Guayas River using a process-based model
	Crespo P.D.B.; Mosselman E.; Giardino A.; Becker A.; Ottevanger W.; Nabi M.; Arias-Hidalgo M.
发表日期	2019
ISSN	1027-5606
起始页码	2763
结束页码	2778
卷号	23 期号:6
英文摘要	The equatorial Daule and Babahoyo rivers meet and combine into the tidal Guayas River, which flows into the largest estuary on the Pacific coast of South America. The city of Guayaquil, located along the Guayas, is the main port of Ecuador but, at the same time, the planet's fourth most vulnerable city to future flooding due to climate change. Sedimentation, which has increased in recent years, is seen as one of the factors contributing to the risk of flooding. The cause of this sedimentation is the subject of the current research. We used the process-based Delft3D FM model to assess the dominant processes in the river and the effects that past interventions along the river and its estuary have had on the overall sediment budget. Additionally, a simulation including sea level rise was used in order to understand the possible future impact of climate change on the sediment budget. Results indicate an increase in tidal asymmetry due to land reclamation and a decrease in episodic flushing by river floods due to upstream dam construction. These processes have induced an increased import of marine sediment potentially responsible for the observed sedimentation. This is in contrast with the local perception of the problem, which ascribes sedimentation to deforestation in the upper catchment. Only the deposition of silt and clay in connected stagnant water bodies could perhaps be ascribed to upstream deforestation. © Author(s) 2019.
语种	英语
scopus关键词	Budget control; Catchments; Deforestation; Floods; Land reclamation; Rivers; Sea level; Sedimentation; Sediments; Submarine geology; Dam construction; Dominant process; Marine sediments; Pacific coasts; Possible futures; Process-based modeling; Sediment budgets; Tidal asymmetry; Climate change; catchment; climate change; deforestation; estuarine environment; flood; flooding; land reclamation; marine sediment; model; sea level change; sediment budget; sediment transport; Ecuador; Ecuador; Guayaquil; Guayas; Guayas River; Pacific Coast [South America]
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159657
作者单位	Crespo, P.D.B., Delft University of Technology, Delft, Netherlands, Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo Km 30.5 Vía Perimetral, Guayaquil, Ecuador, HIDRODICON, Cuenca, Ecuador; Mosselman, E., Delft University of Technology, Delft, Netherlands, Deltares, Delft, Netherlands; Giardino, A., Deltares, Delft, Netherlands; Becker, A., Deltares, Delft, Netherlands; Ottevanger, W., Deltares, Delft, Netherlands; Nabi, M., Deltares, Delft, Netherlands; Arias-Hidalgo, M., Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo Km 30.5 Vía Perimetral, Guayaquil, Ecuador
推荐引用方式 GB/T 7714	Crespo P.D.B.,Mosselman E.,Giardino A.,et al. Sediment budget analysis of the Guayas River using a process-based model[J],2019,23(6).
APA	Crespo P.D.B..,Mosselman E..,Giardino A..,Becker A..,Ottevanger W..,...&Arias-Hidalgo M..(2019).Sediment budget analysis of the Guayas River using a process-based model.Hydrology and Earth System Sciences,23(6).
MLA	Crespo P.D.B.,et al."Sediment budget analysis of the Guayas River using a process-based model".Hydrology and Earth System Sciences 23.6(2019).