State Water Resources Research Institute Program

Project ID: 2012LA87B
Title: Irregular Wave Dissipation by Coastal Vegetation
Project Type: Research
Start Date: 3/01/2012
End Date: 2/28/2012
Congressional District: 6th
Focus Categories: Sediments, Geomorphological Processes, Wetlands
Keywords: Waves, vegetation, wetlands, turbulence
Principal Investigator: Smith, Heather
Federal Funds: $ 15,495
Non-Federal Matching Funds: $ 32,056
Abstract: Coastal protection and restoration is a major concern globally. In the United States alone, more than 50% of the population lives within 50 miles of a coastline. Coastal Louisiana is particularly vulnerable to storm damage, as a considerable amount of naturally occurring wetlands have been lost due to wetland erosion and subsidence. However, the prediction of wetland effectiveness is dependent on our limited understanding of the processes that help mitigate storm surge and waves. The objective of this research is to investigate the interactions of coastal vegetation with irregular waves. Our work will focus on:

  1. estimating the damping provided by vegetation as a function of location and wave characteristics;
  2. estimates of the drag coeffcient and its dependency on local hydrodynamic properties; and
  3. the velocity and turbulence in the water column and its effect on the attenuation.

This work will be accomplished through the analysis of laboratory data collected during the summer of 2010.

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