Shoreline Mapping and Change Detection
This service delivers coastline, and, where relevant intertidal maps. The coastline method works by identifying land-water boundaries in time series
of SAR data and high-resolution optical images. Tidal corrections are applied in order to establish locations for high and low water shorelines, and the location of mean sea level. Tidal corrections are based on available tidal models, supplemented with available tide gauge data and sea level measurements from coastal altimetry.
Multiple coastline maps produced on e.g. an annual (or more frequent) basis can be used to identify locations of shoreline change due to coastal erosion or sediment deposition. The maps can, therefore, be used to monitor regions that are known to suffer rapid shoreline change, for example to establish annual erosion/deposition rates, and also to identify new locations where shoreline changes occur.
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