A New, Robust, and Accurate Method to Extract Tide-Coordinated Shorelines from Coastal Elevation Models

Abstract

Abstract FERNANDEZ LUQUE, I.; AGUILAR TORRES, F.J.; AGUILAR TORRES, M.A.; PEREZ GARCIA, J.L., and LOPEZ ARENAS, A., 2012. A new, robust, and accurate method to extract tide-coordinated shorelines from coastal elevation models. The extraction of highly accurate shoreline data is fundamental to carrying out accurate and reliable studies to enhance our understanding of coastal evolution and coastal vulnerability. In our case, shoreline extraction was needed to develop a method based on an extrapolation process because the most suitable height for datum-coordinated shoreline extraction along Spanish coastal areas turned out to be the orthometric datum origin, i.e., the origin of the vertical reference system in Spain. Because of the microtidal nature of the Mediterranean Sea, using this vertical datum is rather troublesome for remotely extracting ground points to apply to traditional shoreline-extraction methods based on interpolation procedures. Because of these difficulties, a new method for shoreline extra...