HR: 11:30h
AN: IN32A-05    [Abstracts]
TI: The GFZ ISDC Part Of Earth Science Cyberinfrastructur
AU: * Ritschel, B
EM: rit@gfz-potsdam.de
AF: GFZ Potsdam, Telegrafenberg A3, Potsdam, 14473, Germany
AB: The GeoForschungsZentrum Potsdam (GFZ) Information System and Data Center (ISDC) as part of the GFZ information technology infrastructure is managing more than 250 very different geoscientific product types containing more than 10 million data sets and approximately 10 TByte data volume, processed by different national and international scientific groups. Most of the data are coming from the German CHAMP satellite as well as from the American-German GRACE satellite mission and appropriate projects. The scientific results are covering geodesy, geophysics and atmospheric research. More than 1300 registered users and user groups all over the world have access to the data using the project and product integrating ISDC portal which is providing different graphical user interfaces (GUI) and non-GUI batch processing interfaces. This presentation is reflecting the ideas, the concepts and the realisation process in order to integrate the ISDC in a global Earth science cyberinfrastructure. All scientific data sets managed by the ISDC are described by corresponding metadata using the Directory Interchange Format (DIF) standard. Extending this DIF standard, product types are described by substantial parent DIF documents whereas the scientific products consisting of the actual data sets and the appropriate child DIF documents containing the data set specific information only. Recently all metadata corresponding to new products types are using the DIF version 9 XML schema instead of the DIF "ASCII text only" standard. Still almost all metadata are stored in project specific relational database structures. In future, at least the parent DIF XML metadata documents will be managed by XML database mechanisms. Existing XML metadata documents easily can be transferred from the ISDC/DIF XML schema to international standardized XML schema using Extensible Stylesheet Language Transformation (XSLT)-based processes. This approach could be helpful in order to integrate a standard web-based Catalog Service (WCAS) interface into the ISDC portal realized by the Open GIS Consortium (OGC)/ISO standard conform "degree" framework. Providing such a standard WCAS interface would open the gate to real interoperability and networking other geoscientific information systems constructing the global Earth science cyberinfrastructure.
UR: http:isdc.gfz-potsdam.de
DE: 0525 Data management
DE: 0530 Data presentation and visualization
DE: 0805 Elementary and secondary education
DE: 1295 Integrations of techniques
DE: 1541 Satellite magnetics: main field, crustal field, external field
SC: Earth and Space Science Informatics [IN]
MN: 2007 Joint Assembly