HR: 0800h
AN: NG31A-0852    [Abstracts]
TI: Towards a High Resolution Cellular Model for Coastal Simulation (CEMCOS)
AU: Dearing, J
EM: J.Dearing@liv.ac.uk
AF: Department of Geography, Roxby Building, University of Liverpool, Liverpool, L69 7ZT United Kingdom
AU: Plater, A J
EM: gg07@liv.ac.uk
AF: Department of Geography, Roxby Building, University of Liverpool, Liverpool, L69 7ZT United Kingdom
AU: * Richmond, N C
EM: nic@lpl.arizona.edu
AF: Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, 9500 Gilman Drive, La Jolla, San Diego, CA 92093-0225 United States
AB: The aim of this research is to develop a cellular model for coastal simulation in response to changing climate and sea-level, as a contribution to the UK Tyndall Centre's Research Theme 4: Sustaining the Coastal Zone. The modelling approach uses simple cell-based rules of sediment erosion, transport and deposition operating between adjacent cells. This enables the model to include the full range of processes and properties of the coastal environment, including nonlinear behaviour, using only local interactions at discrete time intervals. Tide propagation and wave action drive sediment transport, which is further conditioned by erosion thresholds related to grain size and vegetation growth. Here, we report an overview of this one-year project and details on model design and validation. This includes tide and wave parameterisation, resulting in sediment transport over a 3-D grid of cells representing estuary morphology and bathymetry. The model (CEMCOS) is being designed to be fully generic and exportable to different coastal areas, with initial testing and validation being conducted using published bathymetric and cartographic data over the last c.150 years for the Blackwater Estuary in eastern England.
DE: 4235 Estuarine processes
DE: 4255 Numerical modeling
DE: 4558 Sediment transport
DE: 4560 Surface waves and tides (1255)
SC: Nonlinear Geophysics [NG]
MN: 2004 AGU Fall Meeting