Rip Currents and Rip Channel Morphodynamics under Quasi-Steady Conditions
Abstract
We developed a realistic test case for morphodynamic predictions of short-term bathymetry evolution associated with quasisteady rip currents. Assuming stationary forcing, predictions made by the coupled wave-hydrodynamic-morphodynamic model Delft3D are compared with surf zone morphological change inferred from quarterly in-situ bathymetric surveys. The model gives plausible twodimensional hydrodynamic predictions with offshore currents being strongest in the rip channels. When the default wave-induced bedload transport is included the model predicts accretion on the bar similar to the observations but the predicted sandbar amplitude grows unrealistically. Both with and without wave-induced transport, the model underestimates the erosion in the rip channels.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2010
- Accession Number
- ADA527456
Entities
People
- Julian Simeonov
- Steven Spansel
- Todd Holland
Organizations
- United States Naval Research Laboratory