HR:     0830h
AN:     U11A-44
TI:     GPS Data Discovery via Seamless Interface to Archives
AU:     McCallum, M L
EM:     myron@unavco.ucar.edu
AF:     UNAVCO/UCAR
        POB 3000 Boulder, CO 80307-3000  United States
AU:     *Johnson, H O
EM:     hjohnson@ucsd.edu
AF:     IGPP
        Univ California San Diego La Jolla, CA 92093-0225  United States
AU:     Noll, C 
EM:     noll@cddis.gsfc.nasa.gov
AF:     NASA Goddard SFC
        MC920 1 Greenbelt, MD 20771  United States
AU:     Meertens, C 
EM:     chuckm@unavco.ucar.edu
AF:     UNAVCO/UCAR
        POB 3000 Boulder, CO 80307-3000  United States
AU:     Murray, M 
EM:     mmurray@mendo.stanford.edu
AF:     Stanford Univ 
        Dept Geophysics
        Mitchell Bldg Stanford, CA 94305-2215  United States

AB:     There are many GPS data archives operated by groups throughout the
        U.S.  and worldwide. Each of these GPS archives typically has an
        interest in just a few particular types of data - for instance: data
        from the southern California area; or data from the world-wide IGS
        network; or data which was collected with funding from a particular
        agency. These archives have operated in a manner to best meet the
        needs of their constituents, but "outside" users have had to be fairly
        sophisticated to find information of interest. A more cooperative (and
        coordinated) arrangement between these archives would provide all
        users with easier access to GPS data and metadata by allowing them
        to simply contact one center, instead of contacting all of them
        separately.  We call this concept of an interoperable multi-archive
        system the "GPS Seamless Archive Center" or GSAC.
        
        We have identified a minimal meta-data description and exchange
        mechanism with which we propose to establish such a system between
        cooperative archives. The GSAC product describes locations and times 
        for which GPS data was collected, and where data is stored and how 
        to get it. A web-oriented user interface built upon this 
        system can improve data discovery by providing graphical 
        data views using map images or other graphics.
DE:     1206  Crustal movements--interplate (8155)
DE:     1208  Crustal movements--intraplate (8110)
DE:     1242  Seismic deformations (7205)
DE:     1243  Space geodetic surveys
SC:     U
MN:     1998 Fall Meeting