A GIS-based method that uses the visibility principle to calculate maximum fetch is presented. The software was programmed in the Arc macro language and implemented with the use of the GRID-based functions of the ArcInfo Workstation GIS. Applying L/4 as the effective wavebase and existing wind statistics, use of the method is exemplified by calculating the yearly resuspension frequency in the North Sea–Baltic Sea transition area.
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Vol. 2006 • No. 223