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GFZ Representative Report

The Electronic Geophysical Year. GFZ Representative Report. Bernd Ritschel, GFZ ISDC* Manager rit@gfz-potsdam.de. *Information System and Data Center. CHAMP Satellite Project. Partners: GFZ, DLR, NASA, CNES Lifetime: 04/2000 – 09/2010 Main objectives:

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GFZ Representative Report

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  1. The Electronic Geophysical Year GFZ Representative Report Bernd Ritschel, GFZ ISDC* Manager rit@gfz-potsdam.de *Information System and Data Center CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  2. CHAMP Satellite Project • Partners: GFZ, DLR, NASA, CNES • Lifetime: 04/2000 – 09/2010 • Main objectives: • Global Earth gravity field (models) • Global Earth magnetic field (models) • Atmospheric/Ionospheric sounding (GPS occultations) • Monitoring surface heights (GPS altimetry experiment) Combination Gravity Field Model EIGEN-CG01C (CHAMP-GRACE-TERR.) Double difference geometry of GPS limb sounding with CHAMP Magnitude of non-dipolar field CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  3. GRACE Satellite Project • Partners: GFZ, DLR, NASA, CSR • Lifetime: 03/2004 – 2014 • Main objectives: • Global Earth gravity field (constant/time variable) • Occultation atmosphere/ionosphere • Deep oceancurrentchanges GRACE Gravity Field Model Earth mass distributions CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  4. TerraSAR-X Satellite Project • Partners: GFZ, DLR, Industry • Lifetime: 07/2007 – 2012 • Main objective: • X-band radar based SAR(Synthetic Aperture Radar)interferometry images Source: ESA TerraSAR-x StripMap product, 30 x 55 kilometres, as an example of EEC projection. It shows the Upsala Glacier in Patagonia. The three SAR (Synthetic Aperture Radar) modes: Spotlight, Stripmap and ScanSAR. CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  5. Tandem-X Satellite Project • Partners: GFZ, DLR, Industry • Lifetime: 06/2010 – 2015 • Main objectives • X-band radar based SAR(Synthetic Aperture Radar)interferometry images • Digital Earth elevation model(high accurate 12 x 12 x 2m) • Velocity measurements TanDEM-X andTerraSAR-X in formationflight Source: ESA This elevation model shows different accuracies: 1 kilometre, 90 metres, 30 metres and 12 metres (TanDEM-X). CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  6. SWARM Satellit Project • Partners: GFZ, ESA, DLR • Status: Phase D • Lifetime: 2012 – 2016 • Main objectives: • Global Earth magnetic field (model) • 3D Earth crust conductivity • Electric currents in ionosphere Swarm constellation of three satellites The Earth's magnetic field is mainly produced by a self-sustaining dynamo in the fluid outer-core Dynamics of the Earth generating the Gravity and Magnetic Field CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  7. MicroGEMSatellite Project • Partner: GFZ, TU Berlin, Industry • Status: Phase A • Lifetime: ? • Main objectives: • Occultation atmosphere/ionosphere ([Space] Weather) • Topside ionosphere tomography • Reflectometry ocean/ice with GALILEO/GPS • POD with VLBI (for the first time)SLR and GNSS CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  8. Planned Satellite Projects • GRACE “Filler” Mission • Partners: DLR, GFZ, ... • Status: Phase 0 • Lifetime: 2015 – 2020 • Main Objective: Gravity field monitoring • GRACE Follow-on • Partners: NASE, CSR Texas,GFZ • Status: Concept • Lifetime: 2020 – • Main Objective: Gravity field/water storage monitoring CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  9. Global Geodetic Project (GGP) IAG Inter-Commission Project IC-P3.1 Joint with Commission 2 - The Gravity Field, & Commission 3 - Earth Rotation and Geodynamics • Research areas: • Gravity field variations • Environmental influences • local/global Hydrology

  10. GGP SG* Station Network *Superconducting Gravimeter • 30 SG stations around the globe • Basis for WDCC for Earth Tides

  11. GFZ ISDC* Portal Homepage:http://isdc.gfz-potsdam.de GGP Superconducting Gravimeter Station Network *Information System and Data Center The 2007 International Geohazards Week, Frascati, Italy, 5-9 November 2007

  12. ISDC Data and Users • 289 producttypesfrom different geosciencedomains • 113 product types for public use • 4 product types withgrants for science teams • 180 internal product types • 14,38 Terra Byte of data • 23,65 Million products • 5.000 files/day data flow • < 2390 national and international users and user groups • 19 data provider (scientific groups) GFZ+Unis+JPL+UCAR CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  13. Georesearch Challenges and Semantic Relations Semantic relations Workflows & vocabularies Semantic relations Science domain related concepts Technical driven concepts & metadata Culture of scientific work producing Research object exponential growing volume of data and information Complex Systems 1 2 1http://www.emc.com/collateral/analyst-reports/diverse-exploding-digital-universe.pdf 2http://www.geosc.psu.edu/~dbice/DaveSTELLA/climate/climate%20system.png

  14. Geoscience Objectivesand Semantic Web Idea • Modeling the world of geoscience knowledge generation • Integration of multi-domain data and information for the research of complex geo-systems • Discovery, retrieval, reuse and share of data, information and knowledge • Combining and aligning of data and information using controlled vocabularies and inference based rules • Putting the content of data and information in to the appropriate inner and outer context, incl. literature (DOI) • Integration of user generated context information and knowledge using Web 2.0 technology • Visualization of knowledge concepts and semantic relations

  15. Requirements for Modeling andDetecting of Semantic Coherence • Describe the content and context of data in the right way => (standardized) metadata • Design the metadata in the right structure => concept map/RDF-triples/ontology model • Find/use the right terms for addressing the properties of data/metadata => controlled vocabulary • Open/adopt the ontology for the chance of data and metadata interoperability => merging/alignment of domain-centered ontologies

  16. Visualization of Semantic Relations • Tool for modeling and representation of concepts/ontolgies • Detect entities and features • Find relations between entities • Estimate properties of relations • Support for interactive retrieval applications • User guidance => navigation and exploration • Interactive presentation of content and context related features and relations • Tool for representation of retrieval/reasoning results (knowledge) • Presentation of highly complex correlations • Reduction of information overload • Supply of visual links to related extended information

  17. DIF Metadata Classes *in addition to GCMD • Data Product Type = „Parent DIF Document“, Version 9.x => FGDC/OGC/ISO 19115 compliant (incomplete) • Instrument (Sensor) = Instrument DIF => OGC SWE • Platform (Source) = Platform DIF => OGC SWE • Project (Campaign, Mission) = Project DIF • Data Center = Data Center DIF • Institution*

  18. ISDC Ontology Class Model Free Vocabulary Controlled Vocabulary* c Project Instrument Platform Science Domain Institution Product Type *http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html

  19. ISDC Concept MapMetadata Class Ontology *Concept Map

  20. http://de.eyeplorer.com/show/me/climate

  21. eyePlorer Concept Primary results • Central concept Search term(s) • Associates eyeSpots • Associate Ranking Diameter of eyeSpots • Relations Lines between eyeSpots • Categories (Domain) Coloured circle segments • Facts (from CMS) Text, Pictures, … • Sources Repository Selection Secondary results

  22. eyePlorer Architecture for Primary Results Picture taken from VIONTO presentation

  23. eyePlorer Architecture for Secundary Results (Facts) Picture taken from VIONTO presentation

  24. ISDC/eyePlorerCategories Relationships

  25. ISDC/eyePlorer[Wiki]Definition Relationships

  26. ISDC/eyePlorer[Wiki]Keywords and Relations Relationships

  27. ISDC eyePlorermock-up: Climate

  28. Conclusions and Further Tasks • Visualization of ontologies is a suitable approach for knowledge representation and management • We have a preliminary ISDC ontology model • There are detailed ideas/use cases for semantic- based ISDC retrieval application similar to eyePlorer • Finishing the ISDC ontology modelling process • Finding/filling the semantic gaps, both features/ properties and appropriate values • Ontology alignment/merching (very difficult cognitive task), e.g. DC, FOAF, SWEET, … • Transforming XML metadata files and rules into OWL and SWRL files according to the ontology model

  29. Challenges(from WGISS 24) • Sustainable funding of human, technology and technical resources for operational data and information services • Developing/Using of a philosophy for sustainable data and information management at the GFZ • Providing a high available (long-term) archive and services for data, information and knowledge • Education campaign for scientists related to ESSI1 • ESSI1 must become important research domain within German geosciencework, like in many EU countries, Japan and U.S. 1 Earth and Space Science Informatics CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  30. Einsteinturm (1921) Thank you, Questions?

  31. CEOS Working Group on Information Systems and Services, WGISS-24, Oberpfaffenhofen, Oct. 15 - 19, 2007

  32. http://www.gitews.org CEOS Working Group on Information Systems and Services, WGISS-24, Oberpfaffenhofen, Oct. 15 - 19, 2007

  33. Semantic-basedUse Cases for GGP- Fuzzy Logic is Focus of Use Cases- • Show all SG stations which are in operation and delivering calibrated gravity data and additional trustful environmental data in a certain time and space frame • Give all earthquake SG data for stations which also have collocated or nearby located permanent GPS observations • Show all geoscientific projects which use GGP data and information for the validation of global gravity field models as well as other global geophysical models • Connect GGP gravity data with relevant and free available Web information (Web pages, literature, catalogs …) • Network and visualize user generated context (tagging, blogs, mashups, social navigation data) with GGP data

  34. Usage and Benefit of Semantic Relations • Integration of different domain-related data and information to answer domain-specific questions • Re-usage and combination of (tailored) domain-specific data and information for inter-domain complex questions • Considering and benefit from different cultures and workflows of research approaches • Connection of data and related science publications • Combination of knowledge of data providers (concept and controlled vocabularies) and data users (folksonomies) • Bridge from hardcore science results to open societal knowledge

  35. ISDC and GFZ • ISDC is even smaller group now, only 2 persons with support from System and DB administrator • New head of the Geodesy and Remote Sensing department (coming from university) • New director of the GFZ (coming from a technical university) • Interested in more transparency • Common data policy within the GFZ • New mechanism for funding of IT infrastructure • Improvement of long-term archive facilities • … but new requirements are coming from everybody CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

  36. Initial scientific satellite based use of Galileo for Earth observation POD:GNSS TopsideIonosphere Tomograhy MicroGEM (Phase A) POD: SLR POD: VLBI Occultation Atmosphere/Ionosphere Reflectometry Ocean/Ice with Galileo with GPS Combination with ground GNSS

  37. Projects related to WGISS • remote • CHAMP (multi-domain mission) • GRACE (multi-domain mission) • GPS-PDR (geodesy) • GASP (GPS) (atmosphere/ionosphere) • TerraSAR-X (multi-domain mission) • GGSP (Galileo?) • in-situ • GGP (gravity data) CEOS Working Group on Information Systems and Services, WGISS-29, Bonn, May 17 - 21, 2010

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