CROSS-SHORE TRANSFORMATION OF BOUND AND FREE INFRAGRAVITY WAVES OFF THE DUTCH COAST

Jantien Rutten; Marion Tissier; Xinyi Zhang; Ad Reniers; Paul van Wiechen; Sierd de Vries; Dirk Rijnsdorp; Jan Willem Mol; Rinse Wilmink

doi:10.9753/icce.v37.waves.51

No. 37 (2022), Waves

No. 37 (2022)

CROSS-SHORE TRANSFORMATION OF BOUND AND FREE INFRAGRAVITY WAVES OFF THE DUTCH COAST

Waves

Published 2023-09-01

Jantien Rutten
Marion Tissier
Xinyi Zhang
Ad Reniers
Paul van Wiechen
Sierd de Vries
Dirk Rijnsdorp
Jan Willem Mol
Rinse Wilmink

Jantien Rutten

Marion Tissier

Xinyi Zhang

Ad Reniers

Paul van Wiechen

Sierd de Vries

Dirk Rijnsdorp

Jan Willem Mol

Rinse Wilmink

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How to Cite

CROSS-SHORE TRANSFORMATION OF BOUND AND FREE INFRAGRAVITY WAVES OFF THE DUTCH COAST. (2023). Coastal Engineering Proceedings, 37, waves.51. https://doi.org/10.9753/icce.v37.waves.51

Abstract

Infragravity (IG) waves are key drivers for coastal erosion and thus need to be properly included in process-based modelling of coastal hazards. Uncertainties remain regarding the offshore boundary conditions for these long waves. Typically, only bound IG waves are included at the boundary, which means that the possible contribution of free IG waves, such as those radiated from distant coastlines, is neglected. Recent studies however suggest that incoming free IG waves could be significant, particularly in semi-enclosed basins such as the North Sea where they could contribute to coastal hazards (e.g., Reniers et al., 2021, Rijnsdorp et al. 2021). The objective of this work is to improve the understanding of the incoming IG wave field along the Dutch coast. We will quantify how bound and free IG waves develop in intermediate water depths and assess in which conditions (onshore directed) free IG waves become significant.

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References

Reniers et al. (2021), North Sea Infragravity Wave Observations. J. Mar. Sci. Eng.

Rijnsdorp et al. (2021). Free infragravity waves in the North Sea. JGR Oceans.

This work is licensed under a Creative Commons Attribution 4.0 International License.

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CROSS-SHORE TRANSFORMATION OF BOUND AND FREE INFRAGRAVITY WAVES OFF THE DUTCH COAST

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