an organisation for a national earth science infrastructure program making your data accessible on...

AN ORGANISATION FOR A NATIONAL EARTH SCIENCE INFRASTRUCTURE PROGRAM

Making your data accessible on the network using standards

Bruce Simons

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Standards

“Standards are like toothbrushes – everybody wants to use one but nobody wants to share it”

Francois Robida, BRGM

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GML

Client

WMS WFS

WMSWFS

WMSWFS

WMS WFS

GeoSciML

GeoSciML

GeoSciML

GeoSciML

WMS WFS

GeoSciML

GSV

GA

NTGS

PIRSA

MRTMRT mapping

GeoSciML Benefits

GeoSciML Format

PIRSA mapping

NTGS mapping

GA mapping

GSV mapping

Data to GeoSciML Schema mapping

OGC Services

Dat

asou

rces

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Systems(Data Services)

Syntax(Data Language)

Schematic (Data Structure)

Semantic(Data Content)

interoperability

Current ‘World’

Organisation specific

Few standards

Access, Excel,Proprietary GIS

Files, DVD, CD

GeoSciML

Controlled

Vocabularies

GML, XML

WFS, WMS, WCS

GeoSciML ‘World’

Interoperability Requirements

Geoscience community

OpenGIS community (OGC)

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Systems and Syntax standards

• WFS 1.0, WFS 1.1, WFS 2.0• GML 2.0, GML 3.1, GML 3.2• Compliance levels (SF-0, SF-1, SF-2)• Community defined application schema

• WFS 1.0, WFS 1.1, WFS 2.0• GML 2.0, GML 3.1, GML 3.2• Compliance levels (SF-0, SF-1, SF-2)• Community defined application schema

– GeoSciML extends 3.1.1

– GeoSciML conforms to SF-1

• Make sure you are compliant with your community specified standard

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‘Simple features’ vs ‘Complex features’

Level SF-0 Level SF-1

Restricted set of non-spatial property types Y Y

Restricted set of spatial property types Y Y

User-defined property types N Y

Property cardinality 0 - 1 0 - *

Property = temperature,

Value = ’15-20 C’

Property = temperature, TValue[1] = 15 Unit = C Instrument = thermometer TValue[2] = 17 Unit = C Instrument = thermometer TValue[3] = 20 Unit = C Instrument = thermometer

OR

Property = temperature, TRange = MinValue = 15 Unit = C

MaxValue = 20 Unit = C

SF-0 SF-1

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Schematic Agreement

Victoria

South Australia

lithology

RockMaterial

consolidationDegree

compositionCategory

geneticDescription

lithology:ControlledConcept[1..*]

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RockMaterial

consolidationDegree

compositionCategory

geneticDescription

Lithology: ControlledConcept [1..*]

GeologicUnit+ bodyMorphology: [0..*]+ compositionCategory: [0..1]+ exposureColor: [0..*]+ outcropCharacter: [0..*]+ rank: [0..1]

CompositionPart

+ lithology: ControlledConcept [1..*]+ material: RockMaterial [0..1]+ proportion:+ role:

+composition0..*Lithology

Schematic Agreement

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Cainozoic?

Palaeozoic?

Archaean?

Bolindian?Eastonian?Gisbornian?

Late?Early?

Semantic Agreement Semantic Agreement • Select geologic features where age = “xxx”

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• Geological data is largely text-based and interpretive. Simple

numerical data is rare.

• Compliance to many controlled vocabularies is not a trivial exercise

• Compliance to vocabularies is crucial to be able to construct

standardised requests on distributed data

• Establish language independent identifiers (URNs) that local terms

and languages can be mapped to

• GGIC Controlled Vocabularies Working Group and CGI

Geoscience Concepts Task Group

Semantic Agreement Semantic Agreement

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Uniform Resource Name (URN)

• Examples:• urn:cgi:classifierScheme:ICS:StratChart:2008

– identifies the Stratigraphic Chart published by the International Commission for Stratigraphy

• urn:cgi:classifier:CGI:sandstone – identifies the concept designated "sandstone" by CGI

• urn:cgi:feature:GSV:GeologicalFeatureID:16777549126930951– Identifies a specific feature maintained by GSV

• A web-based service architecture requires the ability to identify resources

• The CGI has developed a scheme using URNs for use with GeoSciML:

urn:cgi:{CGIResource}:{ResourceSpecificString}

https://www.seegrid.csiro.au/twiki/bin/view/CGIModel/CGIIdentifierScheme



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Example• <MappedFeature>

… <observationMethod> <CGI_TermValue>

• <value codeSpace="http://urn.opengis.net">urn:ogc:def:nil:OGC::missing</value> • </CGI_TermValue></observationMethod>

<positionalAccuracy> <CGI_NumericValue>• <principalValue uom="urn:ogc:def:uom:UCUM:m">50</principalValue>• </CGI_NumericValue> </positionalAccuracy>• <samplingFrame

xlink:href="urn:cgi:feature:CGI:EarthNaturalSurface"/>• <specification>

<GeologicUnit > <gml:description>Undifferentiated: sandstone, siltstone, black shale; sparsely fossiliferous</gml:description>

• <gml:name codeSpace="urn:cgi:party:CGI:GSV">Castlemaine Group</gml:name> • <gml:name codeSpace="urn:cgi:classifierScheme:GSV:StratigraphicLexicon:Map_symbol“

>Oc</gml:name> <gml:name codeSpace="urn:ietf:rfc:2141">urn:cgi:feature:GA:Stratno:36202</gml:name>

• <observationMethod> <CGI_TermValue>• <value codeSpace=“http://urn.opengis.net">ogc:def:nil:OGC::missing</value>• </CGI_TermValue> </observationMethod>

<purpose>typicalNorm</purpose> <preferredAge> <GeologicEvent>

<eventAge> <CGI_TermValue>• <value codeSpace="urn:cgi:classifierScheme:ICS:StratChart:2004“

>urn:cgi:classifier:ICS:StratChart:2004:Ordovician</value>• </CGI_TermValue> </eventAge>

<eventProcess> <CGI_TermValue>• <value codeSpace="urn:cgi:classifierScheme:GSV:Process">turbidity current</value>• </CGI_TermValue> </eventProcess>

</GeologicEvent> </preferredAge> • …

Most property values refer to registered conceptsCommon values interoperability

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• Can define your own or use those provided by CGI or GGIC – which you do will depend on use case

• CGI vocabularies will generally have lower semantic resolution than data provider’s – but will be more interoperable

Vocabularies

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• MappedFeature View:• Provides Geometries (eg polygons)

– GeologicFeature may be in-line or byReference

– In response to a question like ‘find all GeologicUnits in this area’

• GeologicFeature View:• Provides GeologicFeatures (eg GeologicUnit)

– geometry data (MappedFeature) in-line or byReference

– In response to a question like ‘find all units of Devonian age’

MappedFeature vs GeologicFeature Views

15Tony Cragg, Subcommittee, 1991

Governance

IWG

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«FeatureType»MappedFeature

+ observationMethod [1..*]+ positionalAccuracy

«type»GM_Object

{n}

SamplingFeature

«FeatureType»SpatiallyExtensiveSamplingFeature

«FeatureType»GeologicFeature

+ observationMethod [1..*]+ purpose = instance

MD_Metadata{n}

shape

samplingFrame

specification1

Description

occurrence 0..*

metadata

0..1

Name:Package:Version:Author:

Overview diagram: MappedFeature«Leaf» GeologicFeature1.0Simon Cox

MappedFeature – geologic map elements

• The map sheet• Map polygons

and lines• Map legend

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«FeatureType»MappedFeature

+ observationMethod [1..*]+ positionalAccuracy

«type»GM_Object

{n}

SamplingFeature

«FeatureType»SpatiallyExtensiveSamplingFeature

«FeatureType»GeologicFeature

+ observationMethod [1..*]+ purpose = instance

MD_Metadata{n}

shape

samplingFrame

specification1

Description

occurrence 0..*

metadata

0..1

Name:Package:Version:Author:

Overview diagram: MappedFeature«Leaf» GeologicFeature1.0Simon Cox

MappedFeature – use of standards

• ISO 19109 Feature Model

• ISO 19107 Geometry

• ISO 19115 Metadata

• OGC 07-002 Sampling Model

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Extensions• Related communities building specializations on

GeoSciML– GroundWaterML

– GeochronML

– Mineral Occurrences ML

AN ORGANISATION FOR A NATIONAL EARTH SCIENCE INFRASTRUCTURE PROGRAM

AuScope 2007-2011

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RockMaterial

consolidationDegree

compositionCategory

geneticDescription

Lithology: ControlledConcept [1..*]

GeologicUnit+ bodyMorphology: [0..*]+ compositionCategory: [0..1]+ exposureColor: [0..*]+ outcropCharacter: [0..*]+ rank: [0..1]

CompositionPart

+ lithology: ControlledConcept [1..*]+ material: RockMaterial [0..1]+ proportion:+ role:

+composition0..*Lithology

Schematic Agreement

Cardinality

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MineralSystemassociationType

geneticDescription

InorganicFluid

fluidDescription

classification

MineralDepositModelmineralDepositGroupmineralDepositType

commodityDescription

CommoditycommodityGroupcommodityNamecommodityImportancecommodityRank

MineralOccurrencetype

supergeneModification

composition

source

SupergeneProcessesdepthmaterialtype

EarthResourceMaterialearthResourceMaterialRolematerialproportion

EarthResourcesourceReferencedimensionexpressionformlinearOrientationplanarOrientationshape

parent

child

GeologicFeatureobservationMethodpurpose

MappedFeatureobservationMethodpositionalAccuracy

GeologicEventeventAgeeventEnvironmenteventProcess

geologicHistory

preferredAgeDescription

IGNORESHUMAN INTERACTION

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source


parent

childEndowmentincludesReservesincludesResources

OreMeasurecalculationMethoddatedimensionproposedExtractionMethodsourceReferenceestimatedProperty:ore

CommodityMeasurecommodityAmountcutOffGradegrade

ResourcecategoryincludesReserves

Reservecategory

oreAmount

measureDetails

commodityOfInterest

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source


parent

child

ProductproductNamesourceReferencegradeproductionrecovery

sourceCommodity

deposit

composition

relatedMineassociatedMine

relatedActivity

MiningActivityactivityDurationactivityTypeoreProcessed

MineendDatemineNamesourceReferencestartDatestatus

RawMaterialmaterialproportionrawMaterialRole

producedMaterial

resourceExtraction

MiningFeatureOccurrenceobservationMethodpositionalAccuracy

specification

specification

occurrence

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