Optimised bathymetry representation
ICOM uses unstructured meshes which represent the ideal framework for representing complex domains such as those given by coastlines and bathymetry. Since ICOM uses mesh adaptivity in the course of a simulation it is important to keep the integrity of the domain fixed throughout. A novel optimised topographical representation algorithm (Terreno) has been developed which allow ICOM to make the best use of available data, and also allow users to make rigorous studies of the sensitivity of results to topographic detail. Where available increased resolution local data sets may also be used in regions of particular interest, e.g. harbours or river outflows. Terreno meshes have been used in Tidal modelling, Tsunami simulation and preliminary North Atlantic thermohaline circulation simulations.