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Soft copy photogrammetry to measure shore platform erosion on decadal timescales
Authors:Uwe Dornbusch  Cherith Moses  David A Robinson  Rendel Williams
Institution:(1) Department of Geography, University of Sussex, Chichester Building, Brighton, BN1 9QJ, UK
Abstract:Shore platform erosion is considered a driving mechanism for cliff recession on many rocky coasts and, in the vicinity of sea defence structures, a threat to their stability, yet the spatial pattern of platform erosion, as well as the rate of lowering, is poorly documented. Measurements based on techniques such as the micro-erosion metre or laser scanner, though highly accurate for short time scales and specific locations, are difficult to extrapolate in space and time. They also fail to record mesoscale changes such as block removal. This paper describes a technique to quantify spatial and temporal changes and presents first results.
Keywords:DTM  GPS  Chalk  Erosion  Coastal protection
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