Multibeam Bathymetry Enhances Many NGDC Data Products

The Coastal Relief Model contains 3-arc-second grids of the multibeam bathymetry data with NOS hydrographic and USGS topographic data for the US East Coast and Gulf of Mexico.

The Trackline Geophysics DVDs contain an inventory of what multibeam bathymetry data NGDC does and does not hold and includes magnetics and gravity data. The multibeam bathymetric data exists on this product for inventory purposes and therefore is only a small subset of the original data.

World Data Center for MGG Report MGG-16, Bathymetry of the Northern Gulf of Mexico & Atlantic Coast East of Florida, a poster available from NGDC, was produced as part of the IOC/IHO sponsored International Bathymetric Chart of the Caribbean Sea and the Gulf of Mexico (IBCCA). The data were compiled at 100 meter contour intervals using multibeam bathymetry data where appropriate.

NOS Bathy/Fishing Maps, derived from full-resolution data, were used to create NOAA's 1:100,000-scale published maps of areas in the EEZ.

Each NOS gridded data set found on the Global Relief Data Compilation fully or partially covers an area of 1/2 degree of latitude by 1 degree of longitude, with exceptions in Alaska's EEZ where the width is 1 1/2 degree of longitude. The gridded data are available in two forms: a Universal Transverse Mercator (UTM) grid with coordinates in meters and a 250-meter grid spacing, and a geographic grid with coordinates based on latitude and longitude and a 15-arc-second grid spacing. These gridded data sets are contained on NGDC's Global Relief Data Set.