Rich Signell

U.S. Geological Survey


Bathymetric contours for the Gulf of Maine from USGS. These data were created from a DEM which was based on numerous input layers. For complete details, see: Input data includes: 1. NOAA Hydrographic Survey Data and NGDC Marine Trackline Geophysics Data 2. Naval Oceanographic Office DBDB-V gridded bathymetry 3. Datasets from Bedford Institute of Oceanography and Brookhaven National Laboratory 4. NOAA Medium Resolution Digital Shoreline and DMA World Vector Shoreline 5. Defense Mapping Agency ETOPO5 Digital Relief of the Surface of the Earth 6. GEBCO General Bathymetric Chart of the Oceans 7. USGS North American 30 Arc-Second DEM