Wave height (regular and irregular waves) reduction in 2m water depth over a 40-m-long salt marsh test section in a large scale laboratory flume

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Autori principali: Möller, Iris, Kudella, Matthias, Rupprecht, Franziska, Spencer, Tom, Paul, Maike, van Wesenbeeck, Bregje K, Wolters, Guido, Jensen, Kai, Bouma, Tjeerd J, Miranda-Lange, Martin, Schimmels, Stefan
Natura: Dataset Open Access
Lingua:en
Pubblicazione: PANGAEA 2014
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author Möller, Iris
Kudella, Matthias
Rupprecht, Franziska
Spencer, Tom
Paul, Maike
van Wesenbeeck, Bregje K
Wolters, Guido
Jensen, Kai
Bouma, Tjeerd J
Miranda-Lange, Martin
Schimmels, Stefan
author_facet Möller, Iris
Kudella, Matthias
Rupprecht, Franziska
Spencer, Tom
Paul, Maike
van Wesenbeeck, Bregje K
Wolters, Guido
Jensen, Kai
Bouma, Tjeerd J
Miranda-Lange, Martin
Schimmels, Stefan
collection Datos científicos de ciencias marinas y ambientales
contents Coastal communities around the world face increasing risk from flooding as a result of rising sea level, increasing storminess, and land subsidence. Salt marshes can act as natural buffer zones, providing protection from waves during storms. However, the effectiveness of marshes in protecting the coastline during extreme events when water levels and waves are highest is poorly understood. Here, we experimentally assess wave dissipation under storm surge conditions in a 300-m-long wave flume that contains a transplanted section of natural salt marsh. We find that the presence of marsh vegetation causes considerable wave attenuation, even when water levels and waves are high. From a comparison with experiments without vegetation, we estimate that up to 60% of observed wave reduction is attributed to vegetation. We also find that although waves progressively flatten and break vegetation stems and thereby reduce dissipation, the marsh substrate remained remarkably stable and resistant to surface erosion under all conditions.The effectiveness of storm wave dissipation and the resilience of tidal marshes even at extreme conditions suggest that salt marsh ecosystems can be a valuable component of coastal protection schemes.
format Dataset Open Access
id pangaea_https___doi_org_10_1594_PANGAEA_836217
institution PANGAEA
language en
publishDate 2014
publisher PANGAEA
record_format pangaea
spellingShingle Wave height (regular and irregular waves) reduction in 2m water depth over a 40-m-long salt marsh test section in a large scale laboratory flume
Möller, Iris
Kudella, Matthias
Rupprecht, Franziska
Spencer, Tom
Paul, Maike
van Wesenbeeck, Bregje K
Wolters, Guido
Jensen, Kai
Bouma, Tjeerd J
Miranda-Lange, Martin
Schimmels, Stefan
File content; File name; File size; Uniform resource locator/link to file
Coastal communities around the world face increasing risk from flooding as a result of rising sea level, increasing storminess, and land subsidence. Salt marshes can act as natural buffer zones, providing protection from waves during storms. However, the effectiveness of marshes in protecting the coastline during extreme events when water levels and waves are highest is poorly understood. Here, we experimentally assess wave dissipation under storm surge conditions in a 300-m-long wave flume that contains a transplanted section of natural salt marsh. We find that the presence of marsh vegetation causes considerable wave attenuation, even when water levels and waves are high. From a comparison with experiments without vegetation, we estimate that up to 60% of observed wave reduction is attributed to vegetation. We also find that although waves progressively flatten and break vegetation stems and thereby reduce dissipation, the marsh substrate remained remarkably stable and resistant to surface erosion under all conditions.The effectiveness of storm wave dissipation and the resilience of tidal marshes even at extreme conditions suggest that salt marsh ecosystems can be a valuable component of coastal protection schemes.
title Wave height (regular and irregular waves) reduction in 2m water depth over a 40-m-long salt marsh test section in a large scale laboratory flume
topic File content; File name; File size; Uniform resource locator/link to file
url https://doi.org/10.1594/PANGAEA.836217