Quantifying Wave-Induced Hydrodynamics Near A Saltmarsh Cliff: An Experimental Piv Study

Authors

  • J.R.M. MULLER University of Twente, The Netherlands
  • D. DERMENTZOGLOU Delft University of Technology, The Netherlands
  • S. H. LAKERVELD Delft University of Technology, The Netherlands
  • B. W. BORSJE University of Twente, The Netherlands
  • J.J. VAN DER WERF University of Twente, The Netherlands
  • S.J.M.H. HULSCHER University of Twente, The Netherlands
  • B. HOFLAND Delft University of Technology, The Netherlands
  • A. ANTONINI Delft University of Technology, The Netherlands

DOI:

https://doi.org/10.59490/coastlab.2024.785

Keywords:

Particle Image Velocimetry, saltmarsh erosion, saltmarsh cliff, wave flume

Abstract

Nature-based flood defences receive increasing interest as a viable option for improving flood safety worldwide. A contemporary case is using the ability of saltmarshes to attenuate waves during storm conditions for strengthening coastal flood defences. To ensure a long-term reinforcement of flood protection, it is important to understand the erosion mechanisms of saltmarshes during storms. One of the critical locations for erosion is at the transition between the saltmarsh and the bare mudflat, often characterized by a vertical step or cliff. These cliffs vary between 0.2 to 2.0 m in height, depending on soil characteristics and local hydrodynamics. However, wave-induced hydrodynamics that controls the (mass) erosion at the saltmarsh cliff are not fully understood. Also the role of saltmarsh vegetation on these near-cliff hydrodynamics are not clearly quantified. In this research, we present high-resolution measurements of wave-induced hydrodynamics at a saltmarsh cliff performed in a scaled wave flume experiment.

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Published

2024-05-07

Conference Proceedings Volume

Section

Extended abstracts

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