1. Seismology. Seismograms; accelerograms; digitized strong-motion accelerograms; earthquake data list (events since January 1900); earthquake data service with updates on a monthly basis.

  2. Geomagnetic main field. Magnetic survey data and secular-change data tables.2

NGDC Web Site Statement

The National Geophysical Data Center’s mission is data management in the broadest sense. We play an integral role in NOAA’s environmental research and stewardship, and provide data services to users worldwide.3

NGDC Functional Statement

The National Geophysical Data Center conducts a data and data-information service in all scientific and technical areas involving solid earth geophysics, marine geology and geophysics, glaciology (snow and ice), the space environment, solar activity and the other areas of solar-terrestrial physics. The scientific specialties treated include seismology, geomagnetism, topography, bathymetry, paleoclimatology, gravimetry, earth tides, crustal movement, geothermics, glaciology, ionospheric phenomena, solar activity and related areas. The services are provided for scientific, technical, and lay users in governmental agencies, universities and the private sector in the U.S. and their counterparts in foreign countries. The Center prepares systematic and special data products and performs data-related research studies to enhance the utility of the service to the users. It performs all functions related to data acquisition, archiving, retrieval, indexing, quality assessments, evaluation, synthesis, dissemination, and publication. The Center operates World Data Center-A for the respective scientific areas listed above under the auspices of the National Academy of Sciences. It performs necessary liaison with other NOAA components and with national and foreign contributors and users of data and information about data. The Center coordinates with other NESDIS data centers and with data centers outside of NOAA in areas of related scientific and technical concern to achieve a useful degree of homogeneity in the data services in the environmental sciences and to avoid duplication of effort. It takes part in jointly planning national and international scientific programs to assure that data collection and management needs are adequately considered.4


15 CFR Ch IX (1-1-97 edition) §950.5.




NOAA Organizational Handbook, <http://www.rdc.noaa.gov/~ohb/E/EH0000.html>.

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