Variations in storm-induced bed level dynamics across intertidal flats

Abstract Hydrodynamic forces on intertidal flats vary over a range of temporal and spatial scales. These spatiotemporal inhomogeneities have implications for intertidal flat morphodynamics and ecology. We determine whether storm events are capable of altering the long-term morphological evolution of...

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Autores principales:	P. L. M. de Vet, B. C. van Prooijen, I. Colosimo, N. Steiner, T. Ysebaert, P. M. J. Herman, Z. B. Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3503dd38987e458ca39497f12cb7a1ac
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spelling	oai:doaj.org-article:3503dd38987e458ca39497f12cb7a1ac2021-12-02T16:06:40ZVariations in storm-induced bed level dynamics across intertidal flats10.1038/s41598-020-69444-72045-2322https://doaj.org/article/3503dd38987e458ca39497f12cb7a1ac2020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-69444-7https://doaj.org/toc/2045-2322Abstract Hydrodynamic forces on intertidal flats vary over a range of temporal and spatial scales. These spatiotemporal inhomogeneities have implications for intertidal flat morphodynamics and ecology. We determine whether storm events are capable of altering the long-term morphological evolution of intertidal flats, and unravel the contributions of tidal flow, wind-driven flow, waves, and water depth on inhomogeneities in bed level dynamics (bed level changes over ~days) across these areas. We complement decades of bed level measurements on eight intertidal flats in two estuaries in the Netherlands with an extensive 1-month field campaign on one of those flats. Across this intertidal flat, the hydrodynamics and morphodynamics of a storm event were captured, including the post-storm recovery. We show that individual events can persistently alter the morphological evolution of intertidal flats; magnitudes of some bed level changes are even comparable to years of continuous evolution. The morphological impacts of events are largely controlled by the relative timing of the forcing processes, and not solely by their magnitudes. Spatiotemporal variations in bed level dynamics of intertidal flats are driven by a combination of: (1) the inhomogeneous distributions of the hydrodynamic forcing processes (including the under-explored role of the wind); and (2) the linear proportionality between bed level dynamics and the local bed slope.P. L. M. de VetB. C. van ProoijenI. ColosimoN. SteinerT. YsebaertP. M. J. HermanZ. B. WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-15 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q P. L. M. de Vet B. C. van Prooijen I. Colosimo N. Steiner T. Ysebaert P. M. J. Herman Z. B. Wang Variations in storm-induced bed level dynamics across intertidal flats
description	Abstract Hydrodynamic forces on intertidal flats vary over a range of temporal and spatial scales. These spatiotemporal inhomogeneities have implications for intertidal flat morphodynamics and ecology. We determine whether storm events are capable of altering the long-term morphological evolution of intertidal flats, and unravel the contributions of tidal flow, wind-driven flow, waves, and water depth on inhomogeneities in bed level dynamics (bed level changes over ~days) across these areas. We complement decades of bed level measurements on eight intertidal flats in two estuaries in the Netherlands with an extensive 1-month field campaign on one of those flats. Across this intertidal flat, the hydrodynamics and morphodynamics of a storm event were captured, including the post-storm recovery. We show that individual events can persistently alter the morphological evolution of intertidal flats; magnitudes of some bed level changes are even comparable to years of continuous evolution. The morphological impacts of events are largely controlled by the relative timing of the forcing processes, and not solely by their magnitudes. Spatiotemporal variations in bed level dynamics of intertidal flats are driven by a combination of: (1) the inhomogeneous distributions of the hydrodynamic forcing processes (including the under-explored role of the wind); and (2) the linear proportionality between bed level dynamics and the local bed slope.
format	article
author	P. L. M. de Vet B. C. van Prooijen I. Colosimo N. Steiner T. Ysebaert P. M. J. Herman Z. B. Wang
author_facet	P. L. M. de Vet B. C. van Prooijen I. Colosimo N. Steiner T. Ysebaert P. M. J. Herman Z. B. Wang
author_sort	P. L. M. de Vet
title	Variations in storm-induced bed level dynamics across intertidal flats
title_short	Variations in storm-induced bed level dynamics across intertidal flats
title_full	Variations in storm-induced bed level dynamics across intertidal flats
title_fullStr	Variations in storm-induced bed level dynamics across intertidal flats
title_full_unstemmed	Variations in storm-induced bed level dynamics across intertidal flats
title_sort	variations in storm-induced bed level dynamics across intertidal flats
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/3503dd38987e458ca39497f12cb7a1ac
work_keys_str_mv	AT plmdevet variationsinstorminducedbedleveldynamicsacrossintertidalflats AT bcvanprooijen variationsinstorminducedbedleveldynamicsacrossintertidalflats AT icolosimo variationsinstorminducedbedleveldynamicsacrossintertidalflats AT nsteiner variationsinstorminducedbedleveldynamicsacrossintertidalflats AT tysebaert variationsinstorminducedbedleveldynamicsacrossintertidalflats AT pmjherman variationsinstorminducedbedleveldynamicsacrossintertidalflats AT zbwang variationsinstorminducedbedleveldynamicsacrossintertidalflats
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Variations in storm-induced bed level dynamics across intertidal flats

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