2004 UC Proceedings Abstract
 Moving Toward Achieving Consistency in Coastal GIS Shorelines With Vdatum Track: Ocean, Coastal, and Marine Resources Author(s): Michael Espey On two-dimensional maps and GIS, the shoreline is typically a snapshot of a coastline which is perpetually changing. Inevitable inconsistencies between shoreline delineations plague coastal GIS users as they seek to combine data from multiple sources and perform analysis. The goal of this project was to evaluate the results, in terms of consistency, of combining a shoreline definition based on the mean high water (MHW) tidal datum with a delineation technique that incorporates automation through the use of digital elevation models (DEMs). Differences between shorelines derived in this manner and those derived using more traditional methods were quantified. Finally, the ability to fully automate derivation of MHW shorelines from DEMs using ArcGIS was explored. Michael Espey NOAA RSD 1315 East-West Hwy Silver Spring , MD 20910 US Phone: 301-713-2685 E-mail: mike.espey@noaa.gov |
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