NUMERICAL WAVE DISSIPATION OVER IDEALIZED MARSH PLATFORM | Zendy

Elizabeth R. Holzenthal | Zendy; D. F. Hill | Zendy

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NUMERICAL WAVE DISSIPATION OVER IDEALIZED MARSH PLATFORM

Author(s) -

Elizabeth R. Holzenthal,

D. F. Hill

Publication year - 2018

Publication title -

coastal engineering proceedings

Language(s) - English

Resource type - Journals

eISSN - 2156-1028

pISSN - 0589-087X

DOI - 10.9753/icce.v36.papers.104

Subject(s) - dissipation , attenuation , mechanics , parametric statistics , wave height , shore , marsh , waves and shallow water , wave model , physics , geology , meteorology , optics , mathematics , ecology , wetland , statistics , oceanography , biology , thermodynamics

Combined tidal and wave events are simulated over an idealized marsh environment to quantifiably characterize the cross-shore attenuation of wave height as a function of bottom roughness and submergence depth. Dissipation calculated by the numerical model is compared with existing analytically derived parametric wave height decay models. We propose an alternative two-parameter dissipation model that better captures the limited decay of wave attenuation over a kilometer of propagation. The results suggest that cross-shore decay rates are sensitive to incident wave conditions as well as bottom roughness.

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