World Data Service for Geophysics, Boulder

Marine Geophysical Data Access

GEODAS (GEOphysical DAta System) is an interactive database management system developed by the National Geophysical Data Center (NGDC) for use in the assimilation, storage and retrieval of geophysical data. GEODAS software manages several types of data including marine trackline geophysical data, aeromagnetic survey data, and gridded bathymetry/topography. Marine Geophysical Data Access at NGDC is evolving to a new suite of tools.

Online Access Tools:

• Geophysical Survey Data Viewer
  
  This interactive ArcGIS map relies on GEODAS to provide free data search, retrieval, and download. Several other geophysical data types have their own viewers (see links at left).
  
  
• WCS GRID Extract Tool
  
  The extractor is replacing the online GEODAS grid translator (design-a-grid), enabling creation and download of custom grids of bathymetry/topography.
  • ETOPO1 Worldwide Topography
  • US Coastal Relief Model
  • Great Lakes Bathymetry
  
  

Desktop Tools for Downloaded Data:

The GEODAS MS Windows desktop access software, including custom grid creation capability, is still available for use with data downloaded from NGDC.

Technical data contact:

, 303-497-3158