2nd International Conference on GeoComputation

Extraction of Beach Landforms from DEMs using a Coastal Management Expert System

Tony Moore, Kevin Morris, Grahame Blackwell

Plymouth Marine Laboratory,
Prospect Place, West Hoe,
Plymouth, Devon, PL1 3DH, UK
Tel: +44 (0) 1752 633408
Fax: +44 (0) 1752 633101

Email: abmo@unixmail.nerc-pml.ac.uk

Steve Gibson

School of Computing,
University of Plymouth,
Drake Circus, Plymouth,
Devon, PL4 8AA UK
Tel: +44 (0) 1752 232541
Fax: +44 (0) 1752 232540

Presented at the second annual conference of GeoComputation ‘97 & SIRC ‘97, University of Otago, New Zealand, 26-29 August 1997

Abstract

This paper describes the use of a prototype coastal management expert system, to facilitate the extraction of a salient element of coastal landforms from a DEM derived from stereo aerial photography. The system, COAMES (COAstal Management Expert System), is currently under development at Plymouth Marine Laboratory and the University of Plymouth. The sub-landform to be extracted is identified and isolated through use of "intelligent" ground control points stored within COAMES’ object-oriented data structure, in conjunction with geomorphological rules and functions embedded in COAMES’ hierarchical knowledge structure. The morphology of this extracted feature is modelled using polynomial functions - this can be compared with a similar feature extracted at a different time to gain a picture of geomorphic feature development.