Numerical simulation on seasonal transport variations and mechanisms of suspended sediment discharged from the Yellow River to the Bohai Sea

Li, Guosheng; Wang, Hailong; Li, Heping

doi:10.1007/s11442-010-0821-6

Cited by 23 publications

(14 citation statements)

References 15 publications

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“…Most of the sediment deposits locally near the estuary, which was also observed by Zhang et al [10]. Studies [30], [31] have indicated that about 70% of the sediment from Yellow river deposits around the estuary. The river deltas act as a sink for the sediment in summer and as a source for the suspended sediment in winter and for the transport to Yellow sea through Bohai strait.…”

Section: Mechanisms Determining the Spatiotemporal Variation Of R Rssupporting

confidence: 65%

Remote Sensing of Spatiotemporal Variation of Apparent Optical Properties in Bohai Sea

Zhang

Qian

Cui

et al. 2015

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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It has been presented in this study, the evaluation of remote sensing reflectance (Rrs) derived from the atmospheric correction of Moderate Resolution Imaging Spectroradiometer (MODIS) aboard Aqua satellite. A switching algorithm was developed for the atmospheric correction. The evaluation shows that MODIS measured Rrs at visible bands compare reasonably well with in situ Rrs, with the mean ratios ranging from 0.955 to 1.374. The spatiotemporal variation of Rrs in Bohai sea is characterized using MODIS data from July 2002 to June 2014. It is noted from the time series of monthly mean Rrs and wind speed a time lag for the response of Rrs to wind. Significant linear relationship is found between the monthly mean Rrs and wind speed, with the correlation coefficients much higher than those between the annual mean Rrs and total river discharge, indicating that wind plays a more important role than river discharge in determining the variation of Rrs in Bohai sea. Strong seasonal variation is observed in the monthly mean Rrs, which is the lowest during July and August and increases to the maximum in January-February and then decreases. Using the entire archive of MODIS/Aqua data over Bohai sea, this study documents the apparent optical properties which serve as an indicator of sediment transport, providing a lowcost and efficient way for monitoring the marine environmental change and for demonstrating the effect from sediment transport on coastal morphology and ecosystem.

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Section: Mechanisms Determining the Spatiotemporal Variation Of R Rssupporting

confidence: 65%

Remote Sensing of Spatiotemporal Variation of Apparent Optical Properties in Bohai Sea

Zhang

Qian

Cui

et al. 2015

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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“…Duo to the influence of East Asian monsoon, the entire water column produces a strong vertical mixing (Bian et al, 2010;Dong et al, 2011;Li et al, 2010;Shi & Wang, 2010;Wang & Jiang, 2008). Previous researchers reported that the temperature decreases significantly with the depth increasing in the period of late fall to early spring.…”

Section: Discussionmentioning

confidence: 99%

The Trend and Seasonal Change of Sediment in the East China Sea Detected by GRACE

Chang

Tang

et al. 2019

Geophysical Research Letters

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The deposition of land sediments onto the broad continental shelf of the East China Sea (ECS) is controlled by complex, dynamic hydrological mechanisms. In this study, we apply the data from Gravity Recovery and Climate Experiment (GRACE) satellite to detect the gravity signal caused by changes in sedimentation. The GRACE‐observed gravity signal is separated into the individual contributions using multisource data. After correction of each known individual signal, the sediment‐caused gravity change signal is used to invert for the sediment mass change in the ECS using a space domain inverse method. The results indicate that the total GRACE‐inverted sediment deposition rate was 0.82 ± 0.3 Gt/year from 2005 to 2015, which is in agreement with in situ sediment observations. The seasonal sediment change is also calculated and discussed. It is caused by sediment transport between the ECS and the Yellow Sea.

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“…6. The low salinity plume moves to the headland of Laizhou Bay and has the tendency to turn to the southeast as a result of the influence of the Coriolis force (Li et al 2005a). Particles located at the central of the BS move south, then turn to the southeast and move out from the south of Bohai Strait finally.…”

Section: Surface Circulation Of the Bs During Both The Winter And Thementioning

confidence: 99%

Seasonal circulation and influence factors of the Bohai Sea: a numerical study based on Lagrangian particle tracking method

2010

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Seasonal circulation of the Bohai Sea (BS) in 1992 was investigated using Lagrangian particle tracking method. The hydrography of the BS was simulated based on an unstructured grid, finite-volume, three-dimensional primitive equation ocean model. With the use of the unstructured triangular grid, the model can easily fit the irregular coastal boundary of the BS. The simulated tides, tidal current, and thermohaline field agreed well with the observations. The transport of particles has three-dimensional structure in the BS. Compared with central Bohai and Bohai Strait, the differences of particles' transportation between surface and bottom layer in three bays are small. The circulation in the summer is stronger than that in the winter, with the average residual velocity in the surface layer being about 3.7 cm/s during the summer while only 1.8 cm/s during the winter. Using the same model, several well-designed numerical experiments were performed to investigate the effect of oceanic tide, river discharge, wind stress, and thermal stratification on the circulation. It is shown that winds play an important role in the circulation of the BS during both the winter and the summer. Density circulation is important during the summer; however, it is negligible during the winter. River runoff only affects the area around the river mouth. Compared with wind and thermohaline effect, the contribution of tides is small during the summer, and the circulation under only M 2 tidal constituent could not reflect the actual circulation of the BS.

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Numerical simulation on seasonal transport variations and mechanisms of suspended sediment discharged from the Yellow River to the Bohai Sea

Cited by 23 publications

References 15 publications

Remote Sensing of Spatiotemporal Variation of Apparent Optical Properties in Bohai Sea

Remote Sensing of Spatiotemporal Variation of Apparent Optical Properties in Bohai Sea

The Trend and Seasonal Change of Sediment in the East China Sea Detected by GRACE

Seasonal circulation and influence factors of the Bohai Sea: a numerical study based on Lagrangian particle tracking method

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