Experimental Study on Silty Seabed Liquefaction and Its Impact on Sediment Resuspension by Random Waves

Dong, Jiangfeng; Xu, Jishang; Li, Guangxue; Li, Anlong; Zhang, Shaotong; Niu, Jianwei; Xu, Xingyu; Wu, Lindong

doi:10.3390/jmse10030437

Cited by 9 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Suction dynamics influences the evolution of intertidal sandy flats (Sassa & Watabe, 2007). The wave‐induced liquefaction impact on sediment resuspension (Dong et al., 2022), and wave forcing on a narrow fringing macro‐tidal flat induced bed level changes (Belliard et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

Positive Feedback Between the Tidal Flat Variations and Sediment Dynamics: An Example Study in the Macro‐Tidal Turbid Hangzhou Bay

Ren

et al. 2023

JGR Oceans

View full text Add to dashboard Cite

Tidal flat variations (curvature) in macro‐tidal turbid bays highly correlate with sediment dynamics. Interactions between tidal flats and sediment dynamics in macro‐tidal turbid estuaries, like Hangzhou Bay, China, have been studied through a fully validated 3D sediment model by considering high‐turbidity, flocculation, and water‐sediment density coupling. Numerical results show that the circulation and sediment flux in the curvature of Andong tidal flat have similar magnitudes in the along‐estuarine and lateral directions, demonstrating the important impact of the geometry on hydrodynamics and sediment transport processes. Sediment moves toward the southern/northern bank near the bottom/surface level in curvature. Tidally averaged net sediment flux is southward in the curvature. Tidal flat reclamation changes the curvature of the tidal channel, and modulates the circulation and sediment transport, and then feeds back to the tidal flat evolution subsequently. Bottom friction, nonlinear advection, and centrifugal force are dominant forces for inducing the lateral circulation, followed by the Coriolis force and sediment‐induced baroclinic process. Lateral circulation combined with the suspended sediment concentration (SSC) profile controls the distribution of instantaneous and tidally averaged net sediment fluxes in the curvature. The sediment flux positively correlates with the curvature of channel bends. The increased curvature of channel bends enhances the southward sediment fluxes mainly by increasing the effects of the centrifugal force, nonlinear advection, and Coriolis force on the lateral circulation and SSC. This study revealed a two‐way feedback system between tidal flat and sediment dynamics, which contributes to the impact of anthropogenic activities on geomorphological evolution of similar estuaries worldwide.

show abstract

Section: Discussionmentioning

confidence: 99%

Positive Feedback Between the Tidal Flat Variations and Sediment Dynamics: An Example Study in the Macro‐Tidal Turbid Hangzhou Bay

Ren

et al. 2023

JGR Oceans

View full text Add to dashboard Cite

show abstract

“…In particular, our study only considered gravity-driven particle cloud motion. In fact, the particle clouds can be generated by wave-driven (Dong et al, 2022;Jia et al, 2014), biologically-driven (Cozzoli et al, 2020) and density-driven (Olabarrieta et al, 2018) the natural environment. And the particle clouds under different driving conditions have different hydrodynamic environments.…”

Section: Discussionmentioning

confidence: 99%

Experiment Study of the Evolution of Coral Sand Particle Clouds in Water

et al. 2022

View full text Add to dashboard Cite

The motion of particle clouds (i.e., sediment clouds) usually can be found in engineering applications such as wastewater discharge, land reclamation, and marine bed capping. In this paper, a series of laboratory tests are conducted on coral sand to investigate the shape feature of the single particle and the mixing processes of the coral sand particle clouds. The shape of coral sand particle is measured and quantified. The experimental results demonstrate that the shape of coral sand particles tends to be spherical as the particle size decreases, and empirical equations were established to explain the variation of D50 and fS,50 of coral sand. Compared with the silica sand, the evolution of the coral sand particle cloud still experiences three stages, but the threshold for the Reynolds number of particle clouds entering the next stage changes. Further, the normalized axial distance of the coral sand particle clouds is 58% smaller. The frontal velocity exhibits similar varying tendency for the coral sand particle cloud. Considering the difference in shape between coral sand particles and silica sand particles, a semi-empirical formula was proposed based on the original silica sand prediction formula by adding the shape factor and the experimental data of 122 µm⩽D50⩽842 µm. It can predict the frontal velocity of the coral sand particle clouds.

show abstract

Evaluation, sampling and testing methods for offshore disturbed sands with plastic fines: A case study

Tang,

Liao,

et al. 2024

Applied Ocean Research

View full text Add to dashboard Cite

Experimental Study on Silty Seabed Liquefaction and Its Impact on Sediment Resuspension by Random Waves

Cited by 9 publications

References 30 publications

Positive Feedback Between the Tidal Flat Variations and Sediment Dynamics: An Example Study in the Macro‐Tidal Turbid Hangzhou Bay

Positive Feedback Between the Tidal Flat Variations and Sediment Dynamics: An Example Study in the Macro‐Tidal Turbid Hangzhou Bay

Experiment Study of the Evolution of Coral Sand Particle Clouds in Water

Evaluation, sampling and testing methods for offshore disturbed sands with plastic fines: A case study

Contact Info

Product

Resources

About