Impact of Artificial Floods on the Quantity and Grain Size of River‐Borne Sediment: A Case Study of a Dam Regulation Scheme in the Yellow River Catchment

Wu, Xiao; Wang, Houjie; Bi, Naishuang; Xu, Jingping; Nittrouer, Jeffrey A.; Yang, Zuosheng; Lu, Taian; Li, Peihua

doi:10.1029/2021wr029581

Cited by 24 publications

(14 citation statements)

References 67 publications

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“…A value of f mor = 10 was adopted herein, based on sensitivity tests over a range of values. These techniques were not used in Stage 1 as typhoon events demand a more detailed account of the processes involved (Luijendijk et al, 2017; G. Wu et al., 2023).…”

Section: Methodsmentioning

confidence: 99%

“…Delft3D consists of Flow, Wave, and Morphology modules that can be coupled to simulate the processes of fluvial‐tidal‐wave hydrodynamics, sediment transport, and morphological changes (for details see Text S1 in Supporting Information ). It has been applied and validated in various environments (estuaries, coastal waters, inland rivers) over a wide range of timescales, such as long‐term, centennial, decadal, sub‐decadal, annual, sub‐annual, seasonal and event scales (e.g., Gelfenbaum et al., 2015; Hibma et al., 2003; Hopkins et al., 2018; Lesser et al., 2004; Luan et al., 2017; Luijendijk et al, 2017; Meselhe et al., 2016; van der Wegen & Roelvink, 2008; van der Wegen et al., 2008, van der Wegen, Jaffe, & Roelvink, 2011; G. Wu et al., 2023; Zhu & Wiberg, 2022; Zhu et al., 2017).…”

Section: Methodsmentioning

confidence: 99%

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Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Hsueh,

Wu,

et al. 2024

Water Resources Research

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Regular release of sediment from reservoir has been increasingly adopted as a strategy for sustainable management. Here, we use a process‐based morphodynamic model to simulate the estuarine sediment dynamics impacted by turbidity current venting implemented by the Shihmen Reservoir during three typhoon events in 2008. Upon validation with the post‐event bathymetries, the model hindcasts reveal that mud releasing can be effective in mitigating reservoir siltation, yet may be a suboptimal strategy for alleviating coastal sediment deficit. A vast majority of the released muds were delivered through the estuary and exported to offshore by flood advection, wave dispersion, and tidal flushing. The flood‐driven sands, sourced mainly from downstream tributaries, were instead the major contributor to coastal sediment budget. However, mud mantling (covering and immobilizing sand deposits by the reservoir‐released muds) reduced sand availability and thus sand delivery to the coast. For the present case, 25% of the released muds were deposited along the way, presence of these mud covers reduced sand delivery by 15%, compared to a hypothetical scenario of clear‐water flood releases. The relative sand transport deficit is found to increase linearly with the degree of bed mud saturation, 1–D/R, with D/R the ratio of single‐event mud deposit to release. Given broad relevance to global reservoirs encountering the problems of siltation and coastal sediment deficit, our findings highlight that sustainable management needs to look beyond just a bulk amount of sediment, but it is critical to consider how different sediment fractions are interacting and impacted by human activities.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Hsueh,

Wu,

et al. 2024

Water Resources Research

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“…The YSD, SSH, WH and WP along the shore were collected to determine the driving factors of TSS in the YRD. Sediment load at the LiJin station (Figure 1a) was extracted from the Yellow River Sediment Bulletin (Wu et al, 2021). This hydrologic station is the last one in the Yellow River, and is nearly 80 km away from the river mouth.…”

Section: Study Area Data and Methodologymentioning

confidence: 99%

Drivers of suspended sediment dynamics along the shorelines of the Yellow River Delta detected from satellite data

Jin,

Fagherazzi,

Fichot

et al. 2023

Earth Surf Processes Landf

Self Cite

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Total suspended solids (TSS) can be a useful indicator of environmental change in nearshore coastal environments. Understanding the mechanisms of TSS variations in response to environmental drivers is of broad interest for ecology and geomorphology. The Yellow River Delta (YRD) in China is a fragile coastal region that has been affected by human activities and climate change. Here, we investigated TSS along the YRD shoreline over two decades with time‐series satellite data (2002–2020). We observed that TSS concentration decreased significantly in nearshore waters (5‐m isobath) surrounding the YRD, especially in the LaiZhou Bay. During the same time period, wave height (WH) along the deltaic shoreline and sediment load from the Yellow River have decreased, while sea surface height (SSH) has displayed a positive trend. Our results indicate that WH and SSH play a major role in sediment resuspension and dispersion, while the YSD mildly affected TSS variability along the coast. Monthly bed shear stress triggered by waves was then computed using WH, wave period (WP), and SSH. Bed shear stress and TSS displayed a positive correlation. We concluded that seasonal oscillations in SSH in conjunction with wind waves are responsible for TSS variability in the shallow waters in front of the YRD.

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“…The change in river regime in a wandering river is highly sensitive to the condition of water and sediment. At the same time, the changes in water and sediment greatly depend on meteorological, geological, land cover conditions, as well as the construction of upstream reservoirs [25][26][27]. An in-depth understanding of the mechanisms controlling the change in river regimes in wandering rivers has brought efforts in analyzing and predicting river regimes under the changes in water and sediment conditions [28,29].…”

Section: Introductionmentioning

confidence: 99%

An Improved Method and the Theoretical Equations for River Regulation Lines

Zhang

Hou

et al. 2023

Sustainability

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The regulation of wandering rivers is a universal problem that attracts significant attention. To effectively control the dynamic state of river course, it is necessary to adjust and construct river training works, which can be regarded as inseparable parts of the planning of river regulation lines. In this study, by comprehensively analyzing the water and sediment discharge in the wandering river of the Yellow River over the period 1952–2020, the large change in water and sediment conditions will inevitably affect the change in river regimes. By analyzing the river regime evolution process from 1990 to 2020 and calculating the river change index, it is found that the wandering channel of the Yellow River has gradually been stabilized, and there is no longer a large channel change, but a small amplitude swing still occurs frequently since 2010. Therefore, these phenomena highlight an urgent need for improving the planning of river regulation lines. According to the properties of parabola, circular arcs, elliptical arcs and curvature arcs, these curves are used to describe the flow path of the river. The theoretical equations of river regulation line with four curve forms are developed based on the latest river regimes and the location of the existing training works as the basis. Four groups of theoretical equations were verified by selecting typical river bends or reaches. The innovative practices from this study may assist in providing technical references, which control the frequent changes that occurred in river regime, as well as guaranteeing the healthy and sustainable development of rivers.

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Impact of Artificial Floods on the Quantity and Grain Size of River‐Borne Sediment: A Case Study of a Dam Regulation Scheme in the Yellow River Catchment

Cited by 24 publications

References 67 publications

Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Drivers of suspended sediment dynamics along the shorelines of the Yellow River Delta detected from satellite data

An Improved Method and the Theoretical Equations for River Regulation Lines

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