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Marine Geophysical Data AccessGEODAS (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. GEODAS data sets of these digital databases have been released as a DVD-ROM sets by the National Geophysical Data Center, complete with user access software for MS Windows. The GEODAS access software allows Searches and Downloads of GEODAS databases by geographic area, year of survey, institution, platform, cruise, or geophysical parameter. GEODAS Grid translation software allows creation of custom bathymetric/topographic grids with user-defined options for area, format, cell size, etc. On-line versions of GEODAS allow free downloads of geophysical data. GEODAS Search and Data Retrieval gives access to the Marine Trackline Geophysics database. GEODAS Grid Translator (Design-a-Grid) allows users to create and download custom grids of bathymetry/topography from ETOPO1 Worldwide Topography, US Coastal Relief Model and Great Lakes Bathymetry. NGDC is pleased to accept contributions of geophysical data on almost any media. For digital data, standard exchange formats such as MGD77/MGD77T are preferred, but any well documented format is acceptable. All data received will be in the international public domain, available to any interested individual or group.
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