The Crustal Dynamics Data Information System (CDDIS) supports data archiving and distribution activities for the space geodesy and geodynamics community. The main objectives of the system are to store space geodesy and geodynamics related data products in a central data bank, to maintain information about the archival of these data, and to disseminate these data and information in a timely manner to NASA investigators and cooperating institutions. The CDDIS staff and computer facility are located at NASA GSFC in Greenbelt, MD and is part of the Laboratory for Terrestrial Physics within the Earth Sciences Directorate.

The following topics of interest are available from the CDDIS web site:

• What's New at the CDDIS
• Introduction to the CDDIS
• Programs Supported by the CDDIS
• Descriptions of CDDIS Data Sets
• Reports and Documents Available for Review
• Links to Related Sites
• Contact Information for the CDDIS
• Site Map for the CDDIS Web Site
• Search the CDDIS Web Site

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