1. Leverage and Delegation in Developing an Information Model for Geology Simon Cox Research Scientist 14 December 2007

2. CSIRO AGU Fall 2007 – IN52A-05 Cox Outline GeoSciML scope, its community of interest Methodology & platform: geospatial standards Delegation within GeoSciML Extensions from GeoScML Conclusions

3. CSIRO AGU Fall 2007 – IN52A-05 Cox GeoSciML A language for exchange of geoscience information UML logical model XML document format Scope: interpreted and observed geology MappedFeature, GeologicUnit, GeologicStructure, Fossil, Geologic timescale, Borehole, Observation, etc i.e. information required to maintain geologic maps More detail: see poster IN53A-0949

4. CSIRO AGU Fall 2007 – IN52A-05 Cox e.g. GeologicUnit

5. CSIRO AGU Fall 2007 – IN52A-05 Cox e.g. Borehole More detail: The GeoSciML Logical Model - IN53A-0949 (poster)

6. CSIRO AGU Fall 2007 – IN52A-05 Cox Immediate governance arrangements for GeoSciML IUGS Commission for Geoscience Information Active participants in GeoSciML: GSC, USGS, AZGS, BGS, BRGM, SGU, GA, GSV, GSJ, APAT + CSIRO These people are responsible for the design and maintenance of GeoSciML Documentation + discussion: https://www.seegrid.csiro.au/twiki/bin/view/CGIModel/GeoSciML Model and schema: https://www.seegrid.csiro.au/subversion/GeoSciML/

7. CSIRO AGU Fall 2007 – IN52A-05 Cox Standards Framework for GeoSciML Geoscience is largely geospatial → Use geospatial information standards for basic framework from IS0/TC211 (the ISO 19100 series) and the Open Geospatial Consortium ISO 19100 standards The conceptual schema language (UML) to formalize the design Standard treatments for geometry, time, fields, coordinate systems Meta-model for “features” (named, typed things) XML encoding rule – “Geography Markup Language” OGC information and service models Standard treatment for Observations & Measurements Standard http service interfaces – WMS, WFS, SOS

8. CSIRO AGU Fall 2007 – IN52A-05 Cox How does this Framework show up? eg MappedFeature ISO 19109 Feature Model ISO 19107 Geometry ISO 19115 Metadata OGC 07-002 Sampling Model By reference to external components

9. CSIRO AGU Fall 2007 – IN52A-05 Cox Internal delegation GeoSciML model/schema defines data structures to quite a high degree of detail e.g. LithostratigraphicUnit is a kind of GeologicFeature with the properties “preferredAge”, “classifier”, “beddingPattern” etc Property values are scoped to an explicit scale i.e. timescale, stratigraphic index, units of measure may use a localized scale or dictionary Although the governance of scales, vocabularies etc are delegated to the data provider, for maximum interoperability it is recommended to use published, well-governed vocabularies

10. CSIRO AGU Fall 2007 – IN52A-05 Cox e.g. localized vocabularies within standard structures Castlemaine Group - Lancefieldian Ocl published description instance Formation...

11. CSIRO AGU Fall 2007 – IN52A-05 Cox Extensibility Related communities are already building specializations on top of GeoSciML GroundWaterML – see IN53C-03 “Aquifer” specializes GeologicUnit GeochronML – see IN53C-02 Specialized specimens and observation-procedures

12. CSIRO AGU Fall 2007 – IN52A-05 Cox Extensibility methodology for GroundwaterML Same pattern as GeoSciML’s specialization of ISO & O&M … NB this is enforced within the development environment by the use of “controlled packages” in a variety of SubVersion code repositories

13. CSIRO AGU Fall 2007 – IN52A-05 Cox Key points GeoSciML both uses, and contributes to, a distributed governance framework for geoscience information UML/XML framework allows delegated governance UML packages (XML namespaces) reflect system boundaries  discrete governance arrangements Markup conventions support late-binding of selected elements (esp. vocabularies and scales) Understand the scope and reach of your community Only maintain the elements that are: a.important to you b.not governed by someone else Enable extensions to your model Publish re-usable components in http repository e.g. XMI of UML model; XML Schema Maintain your components in an orderly way Don’t cause surprises!

14. Contact Us Phone: 1300 363 400 or +61 3 9545 2176 Email: enquiries@csiro.au Web: www.csiro.au Thank you Exploration & Mining Simon Cox Research Scientist Phone: 08 6436 8639 Email: Simon.Cox@csiro.au Web: www.seegrid.csiro.au