Extensions of the river plume under various Yellow River courses into the Bohai Sea at different times

Cheng, Xinyue; Zhu, Jianrong; Chen, Shenliang

doi:10.1016/j.ecss.2020.107092

Cited by 10 publications

(4 citation statements)

References 48 publications

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“…The model has been well calibrated and verified many times for elevation, current velocity and salinity in previous studies (Cheng et al, 2021a;2021b). This study further validated the model with current, salinity, SSC and wave for SWAN model.…”

Section: Model Validationsupporting

confidence: 69%

Effects of Tide and Wave on the Transport of Water and Sediments off the Yellow River Mouth in Winter

Cheng¹,

Zhu

Chen

2023

Preprint

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The fresh water and sediments transport from the Yellow River mouth downstream along the coast into the Laizhou Bay under the northeasterly wind in winter. The sediment transport is convergence in the river mouth, divergence in the downstream area, and convergence in the north of Laizhou Bay. Tide and wave are the two main forcings affecting the transport of water and sediments off river mouths. For the high-turbidity Yellow River mouth and the adjacent sea, tidal forcing enhances the subtidal downstream transport of water and sediments off the river mouth into the Laizhou Bay, whereas wave forcing has little effect on the advection of water and sediments. The sediment resuspension is controlled by the bottom shear stress induced by tide and wave. The tide-induced bottom shear stress is higher in the north of Laizhou Bay and south of Bohai Bay due to the stronger bottom tidal current. The wave-induced bottom shear stress plays a more important role in sediment resuspension, which is higher in the nearshore region along the Yellow River Delta away from the coast to some extent on account of the maximum near-bottom wave orbital velocity. Tidal mixing strengthens the upward diffusion of bottom suspended sediments. Without tidal forcing, the decreased bottom shear stress suspends less sediment above bed. On the other hand, the enhanced stratification hinders the upward diffusion of the bottom sediment due to the lack of tidal mixing, resulting in higher suspended sediment concentration (SSC) in the bottom layer in the offshore region.

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Section: Model Validationsupporting

confidence: 69%

Effects of Tide and Wave on the Transport of Water and Sediments off the Yellow River Mouth in Winter

Cheng¹,

Zhu

Chen

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The model has been well calibrated and verified numerous times for elevation, current velocity, and salinity in previous studies (Cheng et al, 2021a;Cheng et al, 2021b). This study further validated the model with current, salinity, SSC, and wave for the SWAN model.…”

Section: Model Validationsupporting

confidence: 66%

Dynamic response of water flow and sediment transport off the Yellow River mouth to tides and waves in winter

2023

Self Cite

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Freshwater and sediments are transported from the Yellow River mouth downstream along the coast into Laizhou Bay under the northeasterly wind in winter. Numerical experiments indicate that sediment transport shows the tendency of convergence in the river mouth, divergence in the downstream area, and convergence in the north of Laizhou Bay. Tides and waves are the two main forcings affecting the transport of water and sediments off river mouths. For the high-turbidity Yellow River mouth and the adjacent sea, tidal forcing enhances the subtidal downstream transport of water and sediments off the river mouth into Laizhou Bay, whereas wave forcing has little effect on the advection of water and sediments. Sediment resuspension is controlled by the bottom shear stress induced by tides and waves. The tide-induced bottom shear stress is higher in the north of Laizhou Bay and south of Bohai Bay due to the stronger bottom tidal current. The wave-induced bottom shear stress plays a more important role in sediment resuspension, which is higher in the nearshore region along the Yellow River Delta away from the coast to some extent on account of the maximum near-bottom wave orbital velocity. Tidal mixing strengthens the upward diffusion of the bottom suspended sediments. Without tidal forcing, there is an interesting phenomenon along the Yellow River Delta. In the nearshore region, the decreased bottom shear stress suspends less sediment above the bed. However, in the offshore region, the enhanced stratification hinders the upward diffusion of the bottom sediment due to the lack of tidal mixing, resulting in higher suspended sediment concentration (SSC) in the bottom layer.

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“…From the perspectives of tide dynamics, the strong shore-parallel tidal currents and the tidal shear front developed at the active river mouth act as a barrier to the sediment dispersal, thus triggering a rapid deposition rate at the active river mouth Ji et al, 2020). In addition, the salinity front led by baroclinic transport also restricts the fine sediment transport out of the estuary (Cheng et al, 2021). It induces the active river mouth as a depocenter since the artificial diversion in 1996, and the depo-center tends to be restricted in the shallow waters within the 10-m depth contour (Figure 12).…”

Section: Spatial-temporal Variations Of Deltaic Accretion and Erosionmentioning

confidence: 99%

Fluvial sediment source to sink transfer at the Yellow River Delta: Quantifications, causes, and environmental impacts

Chen

Pan

et al. 2022

Journal of Hydrology

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Extensions of the river plume under various Yellow River courses into the Bohai Sea at different times

Cited by 10 publications

References 48 publications

Effects of Tide and Wave on the Transport of Water and Sediments off the Yellow River Mouth in Winter

Effects of Tide and Wave on the Transport of Water and Sediments off the Yellow River Mouth in Winter

Dynamic response of water flow and sediment transport off the Yellow River mouth to tides and waves in winter

Fluvial sediment source to sink transfer at the Yellow River Delta: Quantifications, causes, and environmental impacts

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