Abstract
The National Geophysical Data Center (NGDC), a national and international repository for marine geophysical data, has developed a unique database-management system known as GEODAS (Geophysical Data System). GEODAS is a user-friendly computer system that integrates an index sequential database with an interactive (random access) inventory and data-documentation file. The system is supported by several graphic peripherals, including cathode-ray tube (CRT) terminals, computer-output-microfilm (COM), and plotters. GEODAS incorporates computer software routines that (a) process underway marine geophysical data (i.e. bathymetry, magnetics, and gravity) into a common-format database, (b) provide both graphical and textual inventory information, and (c) retrieve data using multiparameter select criteria. The GEODAS inventory now is used as a remote access system by research institutions throughout the United States. In the future, we hope to provide remote access to the data file as well and to expand the inventory portion to act as an international referral system.
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