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Cat Herding on a Global Scale

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Cat Herding on a Global Scale OneGeology-Europe – an INSPIRE testbed for semantic harmonisation of „geology“ data across Europe (WP 3) Kristine Asch and John Laxton Project deliverables • Interoperable on- shore geology spatial dataset • with ”progress • Mutilingual metadata for towards discovery harmonisation” • View services • Forerunner and “guinea • Geological pig” for the vocabulary and data implementation of specifications for INSPIRE Directive Europe • Use case studies Fact Vast amount of data hidden in the archives and hard disks in governmental organisations across Europe … Kristine Asch ©BGR.de And they are all different.. Edge matching at national boundaries? Î National boundary Î geological terms and classifications (age, lithology, tectonics ..) Î age of data (mapping campaign) Î choice of units to be mapped Î level of detail / scale Î topographical base (projection, spheroid, drainage system, ...) Î Portrayal (colours and symbols) Î Mapped border of the units Interoperability and harmonisation • Interoperability – when the data model/structure and properties to describe its parts (what GeoSciML does) is agreed – E.g. agreeing a data model will have the feature of “GeologicUnit” with properties of “age” and “lithology” • Semantic harmonisation – when the use of the same definitions and classifications to describe a concept/term is agreed – E.g. ‘clay’. The same concept can be labelled with several terms (“argilla” in Italian, “Ton” in German), but needs to have the same definition, in this case of “clay/Ton/argilla, …”): > 50% particles < 0,004 mm (Wentworth grade scale), or: > 50% particles < 0,002 mm (ISO 14688) • Geometric harmonisation – edge-matching at national boundaries Harmonized? BasaltBasaltBasaltBasalt Harmonized! national boundary Alkali interoperable olivineBasaltBasalt basalt BasaltBasalt BasaltBasalt BasaltBasalt AlkaliAlkali olivineolivine basaltbasalt Geometric Semantic harmonisation harmonisation 5050 kmkm The 1G-E Geology Vocabulary • 516 agreed defined terms, definitions and parent/child relations: – lithology (sedimentary, magmatic, metamorphic) – geological age – genesis – faults and structures • Taken on board: 532 review comments from 20 national data + 2 global NGOs • > 100 new terms and definitions fed into the global geoscience vocabulary of the IUGS Commission of Geoscience Information • Portrayal rules for age, lithology and structures • Explanatory Notes how to encode in GeoSciencel ML ►THE base for semantic harmonisation ►Enables comparability of the information ►Basis for cross-boundary planning Portrayal Rules visualizing the content – and its lack of harmonisation … Vocabulary Building 1GEurope Global CGI scientific Vocabulary require- ments Extract Particularily DRAFT European (e.g. orogenies) Review 1GE-core Team 1G-E Vocabulary Vocabulary Challenges • Agreement: 10 individual country representatives defining the vocabulary (terms and definitions) • 20 national representatives reviewing • The (English) project Language – a neverending source for misunderstanding • Integration with the global CGI vocabulary group – many heated discussions via e-mail, phone and in meetings • Short time available • Acceptance …. The need for a common denominator was not seen by all project participants from the start Harmonisation Workshop, Slovenia WP 3 Geology • 26 experts • 18 nations (EC) • 2 days Tasks: • Define generic harmonisationBase: use of issues the 1G-E vocabulary • Solve these individually • Develop a workflow/method how to tackle this Our 1st obstacle Data gaps – no content National boundary mismatches Harmonisation Workshop issues • Hardly any country has harmonised its boundaries semantically and/or geometrically • Political issues… who provides Gibraltar, Northern Ireland? • Base problem: the difference of scales; target scale 1/1000.000 includes 1/250.000, 1/300.000, 1/400.000, 1/500 000, 1/625 000, 1/1 000 000 –> our advise: define the scale if there is a strong necessity for data harmonisation • Many mismatches solvable by bilateral negotiation, by use of more detailed data sets/maps and publications • However, there will mismatches remain that can only be solved with additional field work ! Geological harmonisation: Draft of a general workflow process Condition: parties use same conceptual model and vocabulary Define properties to be harmonized Expert group Define level of harmonisation Expert group Identify and classify mismatches minor Tools: Mismatch matrix major Generalize semantic Tools /snap boundaries Inform neighbours and Mediator start negotiating process no Solvable by negotiation? yes Neighbours Mark feature Modify just identified Modify general unit border polygones Summary and Conclusions • The work on the OneG-E data vocabulary enriched and improved the global CGI vocabulary • It has been reviewed and agreed by 20+4 countries (subsidiarity principle) • Provides a solid base, easy-to-use vocabulary to describe the geology of Europe • Explanation notes are written to help the implementation • Provides a geology vocabulary and basis for semantic harmonisation of geology in Europe • Reference material for the INSPIRE Geology and Mineral Resources Data TWG GE-MR Specification TWG GE- MR…. • “progress-towards-harmonisation” report provides guidance for future cross-border consistency and harmonisation Thanks to: • Ian Jackson • Francois Robida • Jolanta Cylene • Steve Richard, CGI • Luca DeMicheli • Chris Schubert • Garry Baker • Claudia Delfini • Sybille Hennings • Robert Tomas • Aleksandra Kuczerawy • Kathryn Bull • Jean-Jacques Serrano • Alexander Tschistiakow • Dominique Janjou • Agnès Tellez-Arenas • Stephan Gruijters • Milos Bavec • Marco Klicker • Mary Carter • Alan Smith • Horst Troppenhagen • Marco Pantaloni • Pierre-Yves Declerq • Mikko Nironen • Fernando Perez • Monika • Urzula Stepien • Stefan Bergman • and many more of the 1G-E Team … • Pjotr Czupek • Stefan Kacer • Pavla Guertlerova Invitation to the IUGS-CGI GeoScience Language Workshop + Open GeoSciML Day 25.-27. August 2010 Berlin Topics: Ontologies, vocabularies and terms: Developments and implemention Registration: [email protected] [email protected] Lessons learned WP 3 Harmonisation Workshop in Slovenia Ouch, yes, I will do anything, I will even HARMONIZE !! Aaaargh!! “The classification of the sedimentary rocks is a problem on which much thought has been expended and one for which no mutually satisfactory or complete solution has yet been found" !!!!! F. J. Pettijohn (1975) More information on OneGeology-Europe http://onegeology-Europe.org More information on OneGeology (global) http://onegeology.org The 1G-E vocabulary in numbers • 532 Review comments to the Scientific Data Specification D3.1 V1, 2009 • 6 Metamorphic Grade terms • 6 Proportion terms Revised vocabulary 2010 • 163 Lithology terms • 6 Geologic unit part role terms • 197 age terms • 5 Contact type terms • 82 Genesis terms (42 environments + 40 processes) • 4 Geologic unit Type terms • 15 Orogenic Events • 3 Geologic unit Morphology • 12 Fault type terms terms • 11 Metamorphic Facies terms • 2 Feature Observation Method terms • 1 Mapped Feature Observation Method term agenda • One Geology – Europe • Discrepancies • The vocabulary • The vocabulary by numbers • Building the vocabulary: - develop requirements independently - scrutinizing global standards, extract - recognition and defining of gaps -merge • The stony way to a global herd … examples • CGI multihierarchie contra single • Challenges • Products 1G-E WP3 Vocabulary Sources Bates, R.L. & Jackson, J.A. (1987): Glossary of Geology (3rd ed.). American Geological Institute; 788 p.; Alexandria, Virginia. Bingen, B., et al. (2008): The Mesoproterozoic in the Nordic Countries.-Episodes, Vol. 31, 29-34; Journal of International Geoscience (Beijing) Bucher & Frey (1994): Petrogenesis of Metamorphic Rocks; -7th ed.; Edition. – Springer (Heidelberg) CGI IWG (in review 2008): Simple Lithology vocabulary - Draft vocabularies for GeoSciML Web services.; Available at https://www.seegrid.csiro.au/twiki/bin/view/CGIModel/ConceptDefinitionsTG CGI IWG (in review 2010): Draft vocabularies for GeoSciML Web services.; Available at https://www.seegrid.csiro.au/subversion/GeoSciML/vocabulary/trunk/2010LithologyRevisions/SimpleLithology2010_rc.rdf Faure Maure, et al. in press: Devonian Geodynamic Evolution of the Variscan Belt, Insights from the French Massif Central and Massif Armoricain. Tectonics (Washington DC), in press. Fettes, D. & Desmons, J. (2007): Metamorphic Rocks – A Classification and Glossary of Terms – Recommendations of the International Union of Geological Sciences, Subcommission on the Systematics of Metamorphic Rocks; Cambridge University Press (Cambridge). Fry, N. (1984): The Field Description of Metamorphic Rocks.- John Wiley & Son Ltd (London) Gillespie, M.R. & Styles, M.T. (1999): BGS Rock Classification Scheme, Volume 1, Classification of igneous rocks.; British Geological Survey (Nottingham) Hallsworth, C.R. & Know, R. W, 'B (1999):BGS Rock Classification Scheme. Volume 3: Classification of sediments and sedimentary rocks.- British Geological Survey; Keyworth, Nottingham. Koistinen, T., Stephens, M.B., Bogatchev, V., Nordgulen, O., Wennerström, M., Korhonen, J., 2001. Geological map of Fennoscandian Shield, scale 1:2 000 000. Geological Surveys of Finland, Norway and Sweden and the North-West Department of Natural Resources of Russia LeMaitre, R.W. et al. (2002): Igneous Rocks – A Classification and Glossary of Terms – Recommendations of the International Union of Geological Sciences, Subcommission
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