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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 (2014): 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. PANGAEA, https://doi.org/10.1594/PANGAEA.836217, Supplement to: Möller, I et al. (2014): Wave attenuation over coastal salt marshes under storm surge conditions. Nature Geoscience, 7(10), 727-731, https://doi.org/10.1038/ngeo2251

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Abstract:
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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1File contentContentMöller, Iris
2File nameFile nameMöller, Iris
3File sizeFile sizekByteMöller, Iris
4Uniform resource locator/link to fileURL fileMöller, Iris
Size:
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