Document Type
Conference Proceeding
Publication Date
2013
Department
Marine Science
Abstract
The goal of this study is the development of a Bathymetric Dynamic Digital Elevation Model (DDEM) in the northern Gulf of Mexico (GOM) to support three dimensional wind-wave, and storm surge modeling systems for the Northern Gulf Coastal Hazards Collaboratory (NGCHC). The 3 arc second Coastal Relief Model (CRM) is the first high-quality, high-resolution elevation model produced by the National Geophysical Data Center (NGDC) that covers the United States land/sea coastal zone. This model is chosen as the basis upon which to construct the DDEM.
A method is developed using the National Oceanic and Atmospheric Administration Vertical Datum Transformation (VDatum) software and the Generic Mapping Tools (GMT) to produce the DDEM with open source tools. The bathymetry is updated with the NGDC’s 1 arc second and 1/3 arc second digital elevation models for the GOM. Additional sources of bathymetric data included in the update are 81 bathymetric surveys conducted in Alabama, Mississippi and Louisiana from 2001 to 2010.
The completed elevation model is a 1/3 arc second DDEM covering Alabama, Mississippi and Louisiana updated through May 2010. The completed DDEM will be available as a web accessible resource. Open source tools will be provided to users interested in: 1) extracting data from the completed product or 2) updating the DDEM as additional bathymetric survey data becomes available.
Recommended Citation
Bunya, S., J.C. Dietrich, J.J. Westerink, B.A. Ebersole, J.M. Smith, J.H. Atkinson, R. Jensen, D.T. Resio, R.A. Luettich, C. Dawson, V.J. Cardone, A.T.Cox, M.D. Powell, H.J. Westerink and H.J. Roberts. 2010. A High-Resolution Coupled Riverine Flow, Tide, Wind, Wind Wave, and Storm Model for Southern Louisiana and Mississippi. Part 1: Model Development and Validation. American Meteorological Society 138:345-377 Caress, D.W. and D.N. Chayes. 2012. MB-System Mapping the Seafloor: Software for the Processing and Display of Swath Sonar Data Manual. Gornitz, V.M., R.C. Daniels, T.W. White and K.R. Birdwell. 1994. The development of a Coastal Risk Assessment Database: Vulnerability to Sea-Level Rise in the U.S. Southeast. Journal of Coastal Research 12:327-338 Northern Gulf Coast Hazards Collaboratory. 2012. Second Annual Report to National Science Foundation, 74 p. NOAA National Geophysical Data Center (NGDC). 2012. NGDC 3 Arc second Coastal Relief Model Development. Boulder, Colorado. NOAA National Geophysical Data Center, U.S. Coastal Relief Model (Volume 4), 29 April 2012, http://www.ngdc.noaa.gov/mgg/coastal/grddas04/grddas04.htm NOAA National Geophysical Data Center, Bathymetric and Data Elevation Models, 28 April 2012, http://maps.ngdc.noaa.gov/viewers/bathymetry/