NUMERICAL WAVE DISSIPATION OVER IDEALIZED MARSH PLATFORM

[摘要] 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.

[学科分类] 建筑学