Numerical Study on Seasonal Transportation of the Suspended Sediments in the Modern Yellow River Mouth Effected by the Artificial Water and Sediment Regulation

Wang, Nan; Qiao, Lulu; Li, Guangxue; Zhong, Yi; Song, Dehai; Ding, Dong; Gao, Fei; Ji, Fengying

doi:10.1007/s11802-019-3646-7

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…The maximum SSC at the YRE during the WSRS is 8 kg/m 3 , and the sediment plume length is 15.6-22.4 km, which is much longer than that before the WSRS (5-6 km) and after the WSRS (7-14.6 km). Wang et al (2019) showed that with the rapid increase in runoff and sediment discharge during the WSRS, the sediment plume length can reach the center of the Bohai Sea, which is consistent with the results of our study. The freshwater diffusion range can reach 119.4°E, 38.0°N (Figure 9).…”

Section: The Effect Of Wsrs On Sediment Distributionsupporting

confidence: 92%

“…These results indicate that the great intraday variations in the sediment due to the WSRS further change the land area of the Yellow River delta (Bian et al, 2013). As reported, approximately 66% of the sediment is deposited near the estuary of the Yellow River, and the remaining sediment spreads to the north and south seas with the tidal current (Wang et al, 2019).…”

Section: The Effect Of Wsrs On the Topography Of The Yresupporting

confidence: 69%

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Numerical study of the water-sediment regulation scheme (WSRS) impact on suspended sediment transport in the Yellow River Estuary

Jia

2023

Front. Mar. Sci.

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IntroductionThe transport of suspended sediment plays an important role in regulating erosion-accretion in estuaries. The Yellow River, the second longest river in China, which has a large amount of sediment and contributes sediment to the Yellow River Estuary (YRE) every year. The water and sediment discharge patterns in the lower reaches of the Yellow River have experienced significant changes over recent decades. In particular, the water-sediment regulation scheme (WSRS) of the Xiaolangdi Reservoir transports large amounts of water and sediment to the YRE within a very short time, causing dramatic changes in the spatiotemporal estuarine sediment dynamics.MethodsIn this study, we presented a coupled numerical model based on FVCOM-SWAVE-SED that considered the highly dynamic sediment variations in the YRE. The sediment distribution and erosion-accretion patterns in the YRE during the WSRS in 2013 were analyzed by the high-resolution model.ResultsThe sediment entering the YRE spread with freshwater, forming a high sediment concentration zone near the river mouth, where most of the sediments were deposited. The sediment dispersal distance was limited by the tidal shear frontal (TSF), and the southeast outspread length of the sediment was slightly larger than the northwest spread. Outside of the YRE, the areas with high flow currents exhibited high erosion. We examined the effects of the main external driving forces (such as waves, tides, and runoff) on the sediment distribution and showed that runoff, tides, and waves were the key factors affecting the sediment distribution of the YRE.ResultsThis study shows that WSRS effectively changes the sediment distribution and erosion condition in the YRE and provides a data for researches on changes in estuarine ecosystems.

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Section: The Effect Of Wsrs On Sediment Distributionsupporting

confidence: 92%

Section: The Effect Of Wsrs On the Topography Of The Yresupporting

confidence: 69%

Numerical study of the water-sediment regulation scheme (WSRS) impact on suspended sediment transport in the Yellow River Estuary

Jia

2023

Front. Mar. Sci.

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“…Numerical simulation is an effective method to study the sediment moment and the model in this paper has been also applied and confirmed reliable by Wang et al (2019). The hydrodynamic model is based on the two-dimensional planar incompressible Reynolds average Navier-Stokes shallow water equation, in which the Boussinesq hypothesis and the hydrostatic pressure hypothesis are used, so that the tide surface can be more accurately Curves and tidal fluxes are simulated.…”

Section: Numerical Modelmentioning

confidence: 71%

“…Huang et al (2018) investigated the distribution of estuarine salinity and suspended sediment by a three dimensional with numerical simulation under different flow rates. Wang et al (2019) demonstrated that the shape and length of the Yellow River Delta coastline has changed dramatically since 1976 using the general high-tide line method, which combines remote sensing and geographic information system technology, using multi-spectral scanner, thematic mapper, and enhanced thematic mapper plus images from 1976 to 2014. Yang et al (2017) investigated water and sediment changes by using coastline and suspended sediment concentration methods, indicate the inter-annual and intra-annual variations of the sediment concentration from 1986 to 2013.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Surface Wave on the Sediment Erosion and Deposition Near the Wellow River Mouth, China

Wang¹

2019

Appl. Ecol. Env. Res.

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In this paper, the numerical simulation of sediment erosion and siltation near the Yellow River estuary is carried out by using wave, tidal current and sediment coupling model. A fine triangular mesh is used in the pattern to improve the spatial resolution of numerical calculations. Comparing the measured water depth data with the simulation results, the result shows that the simulation results are in good agreement with the actual situation. In order to analyze the influence of waves on sediment erosion and siltation, the paper carried out wave influence experiments under four conditions: no wind, north wind, easterly wind and south wind. The experimental results show that the wave has a great influence on the erosion and siltation of the seabed in the study sea area. Under the northward wave condition, an erosion zone is distributed in the SE-NW direction, and the maximum erosion thickness is about 1.9 m. Under the eastward wave condition, the erosion zone is north-south. The maximum scouring thickness is about 1.7 m; the scouring and silting effect under the southward wave condition is relatively weak.

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“…The two-dimensional velocity field of the study area was extracted from a previously built high-resolution numerical model using the DHI-MIKE-3 system, where the water level and current speed (with the component speed in the x -axis and y -axis) at each grid cell were extracted at a time step of 8.6 s and then coupled into the carbon flux model to calculate the water exchange between the grid cells. The model simulation for clam growth, ingestion ( C ingestion ), and egestion ( C egestion ) rates was based on dynamic energetic budget (DEB) theory .…”

Section: Methodsmentioning

confidence: 99%

Vacuum Effect: A Redistribution Process of Organic Carbon Mediated by Bivalve Farming

Sun,

Filgueira,

Wang

et al. 2023

ACS EST Water

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Bivalve farming affects the spatiotemporal distribution of organic carbon deposition to benthic environments, potentially altering ecosystem functioning. In this study, spatiotemporal patterns of benthic organic carbon flux of a bottom-based Manila clam (Ruditapes philippinarum) farm were estimated for a 1 year farming cycle using a carbon flux model coupled to a two-dimensional (2-D) hydrodynamic (MIKE-3) and a clam dynamic energy budget (DEB) model. The simulated flux was compared to the sediment total organic carbon (TOC) and contribution of biodeposits to sediment TOC based on stable isotope signatures. The outputs of the model illustrated a clear “vacuum effect” with increased carbon flux within and near the farming area (deposition area) and reduced flux outside the farm (depletion area), which could also correspond to changes in sediment TOC. Moreover, the contribution of biodeposits to the carbon flux was overall higher compared to that of biodeposits to sediment TOC, indicating a loss of biodeposits from deposition to storage in the sediment. This study highlights the role clam farming plays in the dynamics of organic carbon by linking vertical fluxes with sediment TOC, which addresses the current knowledge gaps related to the carbon footprint in coastal bivalve aquaculture systems.

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Numerical Study on Seasonal Transportation of the Suspended Sediments in the Modern Yellow River Mouth Effected by the Artificial Water and Sediment Regulation

Cited by 10 publications

References 24 publications

Numerical study of the water-sediment regulation scheme (WSRS) impact on suspended sediment transport in the Yellow River Estuary

Numerical study of the water-sediment regulation scheme (WSRS) impact on suspended sediment transport in the Yellow River Estuary

The Impact of Surface Wave on the Sediment Erosion and Deposition Near the Wellow River Mouth, China

Vacuum Effect: A Redistribution Process of Organic Carbon Mediated by Bivalve Farming

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