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TitleConfiguration of Mike21 for the simulation of nearshore storm waves, currents and sediment transport: Brackley Bight, Prince Edward Island
AuthorManson, G K
SourceGeological Survey of Canada, Open File 6736, 2012, 33 pages,
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
ProvincePrince Edward Island
NTS11L/06; 11L/07
AreaBrackley Bight
Lat/Long WENS-63.5000 -62.6667 47.5833 47.3333
Subjectsmarine geology; coastal environment; coastal studies; coastal erosion; coastal management; shore features; shorelines; shoreline changes; tidal wave; hydrodynamics; sediment transport; submarine transport; modelling
Illustrationslocation maps; flow charts; plots; tables; images; rose diagrams
Natural Resources Canada Library - Ottawa (Earth Sciences)
ProgramBuilding Resilience to Climate Change in Canadian Communities, Climate Change Geoscience
Released2012 11 21
AbstractThe North Shore of Prince Edward Island (PEI) is a sandy, multi-barred coast with limited fetch in most directions but open to the Gulf of St. Lawrence for several hundred kilometres to the north. In the fall and winter, storms tracking northwards across PEI and into the Gulf can bring sustained storm waves which generate currents capable of transporting sand in both the along- and across-shore directions. Mike21 is a commercially available combined wave, hydrodynamic and sand transport model that may be utilised to improve understanding of contemporary sand transport and possible implications of changing climate in the Brackley Bight area of the North Shore. This manuscript describes the development of a Mike21 model domain and optimal configurations of the Mike21 Spectral Wave, Hydrodynamic and Sand Transport modules appropriate to the study area. The sensitivities of several parameters in each module are tested. The Spectral Wave and Hydrodynamic modules are sensitive to estimates of bed roughness with optimal values considerably lower than published semi-empirical estimates. The Sand Transport module is sensitive to the input sediment transport tables and estimates of the maximum amount of vertical bed level change per day. Simulation of a 4-day moderate northeasterly storm is conducted and the results are compared to currents, waves, and tides measured by S4 current meters and the instrumented seabed lander RALPH during a sediment transport experiment in 1999. The model successfully simulates storm waves and currents and provides reasonable estimates of the amount and patterns of sediment transport.