Transcript ® Sponsored by GroundWaterML2 IE (GW2IE) Progress Report 95th OGC Technical Committee Boulder, Colorado USA Bruce Simons 3 June 2015 Copyright © 2015 Open Geospatial Consortium.

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Sponsored by
GroundWaterML2 IE (GW2IE)
Progress Report
95th OGC Technical Committee
Boulder, Colorado USA
Bruce Simons
3 June 2015
Copyright © 2015 Open Geospatial Consortium
Agenda
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Introduction
Use Cases
Conceptual Model
Logical Model
XML encoding
Use case implementations
Report
Next Steps
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GWML2 IE Introduction
• Objectives:
– Develop a GML compatible groundwater information model and
encoding from existing international initiatives (GWML1, INSPIRE);
– Prepare an engineering report as a draft OGC data specification.
• Participants:
– GSC-NRCan, USGS, DG-JRC, BRGM, CSIRO, BoM, GNS,
SalzburgUni, FedUni, GSG
• June 2012 Reading, UK Kick-off meeting:
– 38 tele-meetings (1 face-to-face, Vienna May 2014);
• OGC Wiki Documentation:
• http://external.opengis.org/twiki_public/HydrologyDWG/GroundwaterInteroperabili
tyExperiment2
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GWML2 Use Cases
• Five use cases identified for testing:
– Commercial - find water wells, estimate cost of water supply well
• http://external.opengis.org/twiki_public/HydrologyDWG/UseCase1
– Policy - meet EU Water Framework Directive requirements
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http://external.opengis.org/twiki_public/HydrologyDWG/UseCase2
– Environmental - assess risks to groundwater dependent ecosystems
• http://external.opengis.org/twiki_public/HydrologyDWG/UseCase3
– Scientific - determine flow of groundwater via modeling software
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http://external.opengis.org/twiki_public/HydrologyDWG/UseCase4
– Technologic – map GWML2 to existing models
• http://external.opengis.org/twiki_public/HydrologyDWG/UseCase5
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GWML2 Conceptual Model
• Consolidated Entity List:
• http://external.opengis.org/twiki_public/HydrologyDWG/Gwml2FinalFeaturesList
• Groundwater features:
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GW_HydrogeoUnit, GW_HydrogeoVoid, GW_FluidBody;
GW_Constituent, GW_AquiferTest;
GW_Flow, GW_FlowSystem;
GW_Well, GW_Spring, GW_MonitoringSite, Borehole (construction);
GW_ManagementArea (aligned with WFD/INSPIRE)
• Documentation:
• http://external.opengis.org/twiki_public/HydrologyDWG/GWML2-CM-Model
• Model Comparison:
• http://external.opengis.org/twiki_public/HydrologyDWG/GWIE2-ModelComparison
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GWML2 Logical Model
• UML-GML representation of Conceptual model
• http://external.opengis.org/twiki_public/HydrologyDWG/GWML2-UML-Model
– 6 application schema (GWML2-Main, Well, WellConstruction, Flow,
Constituent, AquiferTest)
– External dependencies:
• ISO19115, 19107, 19108, 19103, 19156, 19123, OGC SWE
– Extends:
• Observations & Measurements (O&M), GeoSciML (v3.2),
InterleavedCoverages
– Cardinalities all [0..x] (cf GeoSciML, ANZSoilML)
– GML XML schema implementation
• http://ngwd-bdnes.cits.nrcan.gc.ca/service/gwml/schemas/2.1/{.xsd}
– Other implementations deferred (e.g. JSON, RDF)
• …until SWG?
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XML encoding – items of note
• SWE Data Record used by lithology and stratigraphy logs
• http://external.opengis.org/twiki_public/HydrologyDWG/GwmlSweDataRecord
– Defined GWML2 data records for stratigraphy and lithology
• Could be extended to other downhole logs such as geophysical,
geochemistry, geochronology logs
– Makes the WFS verbose, but explicit
• O&M used directly for logical model fragments
– Fluid, void, hydrogeounit and flow properties, geology logs
– Encoding patterns described in engineering report
• Sampling Features
– Specialized by GW_AquiferTest, GW_Well,
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Use Case Implementations
• Use Case 1 (water wells, aquifers)
– Planned Services: WFS, WMS
– Participants: CSIRO-BoM, FedUni, GNS, SalzburgUni, NRCan, BRGM
• Use Case 2 (management area, groundwater body)
– Planned Services: WFS, WMS
– Participants: GNS/Z_GIS, BRGM, GSG, INSPIRE
• Use Case 3 (groundwater body, flow, constituents)
– Planned Services: WFS, WMS, SOS
– Participants: CSIRO-BoM, FedUni, GNS, SalzburgUni
• Use Case 4 (modelling tools importing wells, aquifers)
– Participants: USGS, GNS, SalzburgUni
• Use Case 5 (mapping between models)
– Participants: NRCan, GSG, CSIRO, BRGM, INSPIRE
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IE Report status
• GWML2 Draft specification document prepared
• http://external.opengis.org/twiki_public/pub/HydrologyDWG/GroundwaterInteroper
abilityExperiment2/GroundWaterML2_v0.3.1_DRAFT.pdf
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Use cases
Conceptual and logical models
GML/XML encoding rules
Example XML encodings
Implementation results
• Needs
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some diagrams updated
some conformance classes/requirements updated
new instance fragments inserted from existing examples
Implementation results added
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Next Steps
• Finish IE prior to September 2015 HydroDWG
– Refine report: technical GWML2 description (CM, LM, XML)
– Complete use-case implementations and add results to report
• Propose/initiate GWML2 SWG at Sept 2015 OGC TC
(Nottingham)
• See wiki for more details on all aspects:
• http://external.opengis.org/twiki_public/HydrologyDWG/GroundwaterInteroperabili
tyExperiment2
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