Morphodynamic Equilibria in Short Tidal Basins Using a 2DH Exploratory Model

Boelens, Thomas; Qi, Tian; Schuttelaars, Henk M.; Mulder, Tom De

doi:10.1029/2020jf005555

Cited by 3 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to capture these effects dynamically, the existence and stability of morphodynamic equilibria in a two‐dimensional (depth‐averaged) model have to be studied. The results obtained with the cross‐sectionally averaged model are essential input for models in which the above effects are incorporated explicitly (Boelens et al., 2021; Dijkstra et al., 2014). Furthermore, in reality water and sediment are transported over the watersheds to adjacent tidal inlet systems (Duran‐Matute et al., 2014; Sassi et al., 2015).…”

Section: Discussionmentioning

confidence: 99%

Morphodynamic Equilibria in Double‐Inlet Systems: Existence and Stability

et al. 2021

Self Cite

View full text Add to dashboard Cite

The existence of morphodynamic equilibria of double‐inlet systems is investigated using a cross‐sectionally averaged morphodynamic model. The number of possible equilibria and their stability strongly depend on the forcing conditions and geometry considered. This is illustrated by considering a rectangular double‐inlet system forced by M2 tidal constituents only. Depending on the M2 amplitudes and phases at both entrances, no equilibrium, one equilibrium or multiple morphodynamic equilibria may exist. In case no equilibrium is found, the minimum water depth becomes zero somewhere in the system, reducing the double‐inlet system to two single‐inlet systems. In the other cases, the location of the minimum water depth and the direction of the tidally‐averaged sediment transport, as well as their actual values, depend strongly on the M2 tidal characteristics. Such parameter sensitivity is also observed when including the residual and M4 forcing contributions to the water motion, and when allowing for width variations. This suggests that, when considering a specific system, the number and stability of morphodynamic equilibria, as well as the characteristics of these quantities, can only be assessed by investigating that specific system in detail. As an example, the Marsdiep‐Vlie inlet system in the Dutch Wadden Sea is considered. It is found that, by using parameter values and a geometry characteristic for this system, the water motion and bathymetry in morphodynamic equilibrium are qualitatively reproduced. Also the direction and order of magnitude of the tidally‐averaged suspended sediment transport compare well with those obtained from a high‐complexity numerical model.

show abstract

Section: Discussionmentioning

confidence: 99%

Morphodynamic Equilibria in Double‐Inlet Systems: Existence and Stability

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Morphodynamic Modelling in Marine Environments: Model Formulation and Solution Techniques

Schuttelaars

Zitman

2022

Mathematics of Planet Earth

View full text Add to dashboard Cite

Feedback between Basin Morphology and Sediment Transport at Tidal Inlets: Implications for Channel Shoaling

Krafft

Styles

Brown

2022

JMSE

View full text Add to dashboard Cite

Increasing societal pressures (e.g., population growth and urbanization) are driving land use change practices in coastal areas that could potentially alter the hydrodynamics and sediment transport patterns near coastal inlets in ways that might exacerbate existing shoaling conditions. To investigate the potential impact of coastal development, a numerical model is used to predict the long-term evolution of an idealized lagoonal-type barrier island inlet under five different morphological conditions that transitioned from net sediment import to net sediment export. The simulations were designed to address the potential effect of inter-tidal placement and land reclamation on sediment transport and the resulting deposition/erosion patterns. Estuaries that were deeper and devoid of extensive tidal flats tended to promote sediment import and had a greater propensity to exacerbate channel shoaling. Simulations that were characteristic of inter-tidal placement showed net export, yet the likelihood of channel shoaling was increased because some of the material eroded from the tidal flats was deposited in the deeper channels as opposed to being carried out the inlet throat. Alternatively, it was found that regions in which the intertidal area was restricted to elevations higher in the tidal frame, which also showed a net export, produced greater sediment loss in the inter-tidal zone that tended to bypass the deeper sections, reducing the likelihood of channel shoaling.

show abstract

Morphodynamic Equilibria in Short Tidal Basins Using a 2DH Exploratory Model

Cited by 3 publications

References 57 publications

Morphodynamic Equilibria in Double‐Inlet Systems: Existence and Stability

Morphodynamic Equilibria in Double‐Inlet Systems: Existence and Stability

Morphodynamic Modelling in Marine Environments: Model Formulation and Solution Techniques

Feedback between Basin Morphology and Sediment Transport at Tidal Inlets: Implications for Channel Shoaling

Contact Info

Product

Resources

About