Coasts & Ports 1999: Challenges and Directions for the New Century; Proceedings of the 14th Australasian Coastal and Ocean Engineering Conference and the 7th Australasian Port and Harbour Conference · 1999 · 21 citations · 0 references
Coastal EngineeringDetailed DesignEngineeringCoastal ModelingCoastal GeomorphologyOceanographyCoastal HydrodynamicsCoastal ProcessAvailable Models SbeachNearshore ProcessHigh Energy CoastlineBeach ManagementPractical ApplicationGeographyGold CoastSedimentologySediment TransportCoastal ManagementOcean EngineeringCivil EngineeringBeach Dynamic
As part of the detailed design and impact assessment for the Northern Gold Coast Beach Protection Strategy Master Plan, the commercially available models SBEACH and UNIBEST-TC were used to assess cross-shore beach profile response, while GENESIS and UNIBEST-LT were used in the assessment of longshore sediment transport and coastline realignment. The scope for model verification is excellent since the Gold Coast has abundant wave and beach profile data collected over more than 20 years. SBEACH and UNIBEST-TC were verified against data from six storm events between 1988 and 1997, with both models able to predict measured erosion volumes with some degree of success. The cross-shore models were then used to assess the impact of a range of design storms. Neither cross-shore model was able to reliably reproduce measured beach recovery during low wave conditions. Both GENESIS and UNIBEST-LT were used to simulate the widely accepted longshore transport rate of 500,000 m{3}/yr northward. GENESIS was used to model the impact of the proposed submerged reef on the shoreline alignment either side of it. UNIBEST-LT (with the Bijker sediment transport formula) was used to determine the crossshore distribution of longshore transport. All models used in this study are being continually refined and improved by their developers.