Morphological Effects of the Eastern Scheldt Storm Surge Barrier on the Ebb-Tidal Delta

Eelkema, M.; Wang, Zheng Bing; Hibma, A.; Stive, M.J.F.

doi:10.1142/s0578563413500101

Cited by 21 publications

(12 citation statements)

References 16 publications

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“…However, loss of intertidal area, for instance, due to climate change (sea level rise) and human activities, is a common phenomenon (Airoldi & Beck, 2007;de Vet et al, 2017;Eelkema et al, 2013;Fitzgerald et al, 2008;Hoitink et al, 2017;Kirwan & Megonigal, 2013;Ma et al, 2014;Passeri et al, 2015;Sampath et al, 2011;Syvitski et al, 2005;Tambroni & Seminara, 2012). The difficulties in managing the long-term morphodynamics are related to the many interacting factors that play a role in the morphodynamic evolution: the (bio)morphology affects the shear stresses induced by wind waves and tidal currents, as well as the patterns of sediment transport.…”

Section: Introductionmentioning

confidence: 99%

Morphodynamic Feedback Loops Control Stable Fringing Flats

et al. 2018

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We apply a 2‐D horizontal process‐based model (Delft3D) to study the feedback mechanisms that control the long‐term evolution of a fringing intertidal flat in the Western Scheldt Estuary. The hydrodynamic model is validated using a comparison with measurements on the intertidal flat and the sediment transport module is calibrated against long‐term morphology data. First, the processes that lead to net sediment exchange between channel and flat are studied. Then, long‐term simulations are performed and the dependency of sediment fluxes on the tidal flat bathymetry, and the corresponding morphodynamic feedback mechanisms are explained. In the long run, relatively stable states can be approached, which are shown to be typical for wave‐dominated fringing mudflats. The system behavior can be explained by the typical feedback mechanisms between the intertidal bathymetry and the hydrodynamic forces on the flat. In the subtidal domain, the impact of small (5–10 cm) wind waves increases with a rising elevation due to decreasing water depths. In the intertidal domain, the wave impact increases with increasing cross‐sectional slope due to wave shoaling. These relationships result in negative (stabilizing) morphodynamic feedback loops. The tidal current velocities and tide‐induced bed shear stresses, on the other hand, are largely determined by the typical horizontal geometry. A stabilizing feedback loop fails, so that there is no trend toward an equilibrium state in the absence of wind waves.

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Section: Introductionmentioning

confidence: 99%

Morphodynamic Feedback Loops Control Stable Fringing Flats

et al. 2018

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“…The construction of a large-scale closure dam (Afsluitdijk) in the Dutch Wadden Sea in 1932 has disturbed the equilibrium condition of adjacent tidal basins, which are still adapting to the human intervention after nearly 80 years and on the way to a new dynamic equilibrium state (Elias et al, 2003;Dastgheib et al, 2008). The Eastern Scheldt estuary showed overall erosion at the ebb-tidal delta and tidal flats within the estuary after the construction of the storm surge barrier in 1986 (Eelkema et al, 2013;Wang et al, 2015;de Vet et al, 2017), and the estuary is far from any kind of equilibrium at present (Eelkema et al, 2013). The responding time of the Yangtze subaqueous delta to large-scale estuarine engineering projects remains unknown and merits further systematic research.…”

Section: Implications For Deltaic Morphodynamic Equilibrium and Sustamentioning

confidence: 99%

Morphodynamic impacts of large-scale engineering projects in the Yangtze River delta

Luan

Ding

Wang

et al. 2018

Coastal Engineering

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“…2012). Changes in sediment or wave energy dynamics can lead to erosion of wetlands and other ecosystems along estuary shores, together with changes in water quality if the flux of ocean water into the estuary is reduced (Eelkema et al . 2013).…”

Section: Impacts Of Coastal Infrastructure On Natural Systemsmentioning

confidence: 99%

Coastal infrastructure: a typology for the next century of adaptation to sea‐level rise

Hill

2015

Frontiers in Ecol & Environ

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Categorizing the choices in coastal infrastructure that are available to policy makers will allow for comparisons of their potential impacts on ecosystems and of their value in preparation for long‐term sea‐level rise. Although similar approaches have been described elsewhere in different policy contexts, this article focuses on evaluating physical infrastructure types – including hybrid structures that combine landforms with concrete and steel elements –based on historical differences in engineering practices. Such structures can be optimized for different phases of coastal adaptation and can provide multiple benefits (eg supporting ecosystems as well as minimizing flooding in coastal cities). Key factors in a geomorphological, ecological, and land‐use context must be taken into account when selecting various infrastructure strategies, to ensure that they function as intended. The San Francisco Bay region provides an example of how this typology can be applied to help policy makers choose more successful strategies as coastal areas plan for sea‐level rise.

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Morphological Effects of the Eastern Scheldt Storm Surge Barrier on the Ebb-Tidal Delta

Cited by 21 publications

References 16 publications

Morphodynamic Feedback Loops Control Stable Fringing Flats

Morphodynamic Feedback Loops Control Stable Fringing Flats

Morphodynamic impacts of large-scale engineering projects in the Yangtze River delta

Coastal infrastructure: a typology for the next century of adaptation to sea‐level rise

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