Portal

Description
The World Data Center for Marine and Environmental Sciences (WDC-MARE) with its information system PANGAEA provides data portals for several EU projects (EUR-OCEANS, CARBOOCEAN) and suppports existing portals (e.g. GCMD) to disseminate data and metadata for international use.

We also present a generic portal system architecture suitable for geoscientific data portals. The portals harvest data providers with Open Archives Initiative (OAI) protocols using metadata in DIF or ISO-19139 format. Current implementations of OAI only support Dublin Core metadata. A new Java based portal software is in preparation and will support any XML format and makes them searchable through Apache Lucene without any other database software. The open architecture makes it possible to define searchable fields in several data formats by XPath allowing not only full text queries, even ranges are retrievable. The metadata of all providers are stored in separate indices which makes it possible to combine them in several different portals. The web service interface allows to support custom front-ends for users and additional visualization in maps. The software will be made freely available through the Open-Source concept.


 * Abstract (EGU 2006):
 * Preview of EGU 2006 slides: http://alpha.thetaphi.de/Schindler_EGU_2006.ppt
 * First portal implemented by this software: http://dataportal.carboocean.org/

The webservice supplied by the harvester/lucene software and used by the PHP applications in the data portals can be found at: http://opteron.bremen.wdc-mare.org:8800 (running in a simple webserver bundled to portal package, can also run in TOMCAT or Jetty Http Server)

Further portals planned:

 * Paleodata, hosted by PAGES
 * IODP, proposal in planning, hosted in Sapporo CEDEX
 * EUROCEANS hosted by PANGAEA (http://dataportal.eur-oceans.org/)
 * IPY (?) in cooperation with NSIDC