Open AccessNUMERICAL WAVE DISSIPATION OVER IDEALIZED MARSH PLATFORM
Author(s) -
Elizabeth R. Holzenthal,
David F. Hill
Publication year - 2018
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
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.