Abstract
A sensitivity analysis was performed to assess the impact of bathymetric and frictional resistance changes on ADCIRC-simulated peak surge elevations and STWAVEsimulated waves. Natural landscape features such as barrier islands have the potential to create frictional and bathymetric resistance and affect storm surge and wave energy even when submerged. The purpose of this study is to qualitatively assess the impact of barrier island restoration and degradation on storm surge and wave energy in Southeast Louisiana and Mississippi for storms of varying intensities. The study area includes the Chandeleur Islands as well as Cat Island, Ship Island, and Horn Island. Results from this modeling study support the use of barrier islands as a first line of defense against hurricane impacts, and may be used to optimize sustainable coastal protection strategies. However, verification of these simulations for hurricane surge and associated waves requires field data of the nearshore wave conditions under such extreme conditions. Verification of the numerical model results is not possible at this time due to lack of field data.
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