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Abstract
Identification of the sediment transport patterns and pathways is essential for sustainable coastal zone management of the heavily modified coastline of Santa Barbara and Ventura County (California, USA). A process-based model application, based on Delft3D Online Morphology, is used to investigate the littoral transport potential along the Santa Barbara Littoral Cell (between Point Conception and Mugu Canyon). An advanced optimalization procedure is applied to enable annual sediment transport computations by reducing the ocean wave climate in 10 wave height - direction classes. Modeled littoral transport rates compare well with observed dredging volumes, and erosion or sedimentation hotspots coincide with the modeled divergence and convergence of the transport gradients. Sediment transport rates are strongly dependent on the alongshore variation in wave height due to wave sheltering, diffraction and focusing by the Northern Channel Islands, and the local orientation of the geologically-controlled coastline. Local transport gradients exceed the net eastward littoral transport, and are considered a primary driver for hot-spot erosion.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Littoral transport rates in the Santa Barbara Littoral Cell: a process-based model analysis |
| Series title | Journal of Coastal Research |
| Issue | Special Issue 56 |
| Year Published | 2009 |
| Language | English |
| Publisher | Coastal Education and Research Foundation |
| Contributing office(s) | Pacific Coastal and Marine Science Center |
| Description | 5 p. |
| First page | 947 |
| Last page | 951 |
| Conference Title | 10th International Coastal Symposium |
| Conference Location | Lisbon, Portugal |
| Conference Date | April 13-18, 2009 |
| Country | United States |
| State | California |
| Other Geospatial | Santa Barbara Littoral Cell |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |