providing geoscience data globally onegeology as an open geo(science) data model and the advantage...

Providing geoscience data globally

OneGeologyas an open geo(science) data model and the advantage of the distributed

data system

M KOMAC, T DUFFY, F ROBIDA, M HARRISON & L ALLISON July 2015


Background

• Initiated in 2007 by Geological Survey Organisations from around the globe: national and state / provincial / territorial

• Voluntary initiative (that became a formal structure in 2013)

• Global geoscience information infrastructure has raised the level of geological survey information delivery across the world


Achievements• Mobilised well established international networks• Implementing interoperability principles, metadata of

maps and services• Accommodating needs of geoscience data at various

scales and various geological topics• Has made geology a global leader in the field of SDI &

an exemplar of a community working together• Has spawned projects and initiatives across the world,

some very large (i.e. continental initiatives such as OneG-E in Europe, GIN in USA and CCOP project in Asia)


OneGeology Consortium

As of October 2013 OneGeology has become a Consortium with:

• a clear governance structure, • formally defined rules, • membership commitments, and • with ambitious objectives.


OneGeology Consortium• Currently there are 119 Members, 21 Principal

Members, 2 Corporate Members (ESRI, Schlumberger) and 2 Associate Members Orgs (IUGS, GEM)

• 138 participating organisations • Providing +300 data services from 70 surveys (and

counting)• Formally supported by UNESCO, IUGS, ICSU, GEO• Officially recognised as being the global model for

open geo-data sharing


OneGeology Governance

Chair of the BoardBoard members (Africa, Asia, N

America, S America, Eurasia, Europe, Oceania)

Managing Director

Finance & Secretariat

[BGS]

Operations [BRGM]

OneGeology Board

Consortium MembersPrincipal Members with Voting rights

Members (who have agreed to the Brighton Accord)

Corporate MembersAssociate Members - Non-Geological Survey

Organisations

Operational groupsInc. 1). Technical Implementation Group 2). Technical Advisory Group

External funding sources

Science User

Group


Objectives

• To be the provider of geoscience data globally• To ensure an exchange of know-how and skills so all

can participate• Use of the global profile of OneGeology to increase

awareness of the geosciences and their relevance (in contemporary society)


The system behind the name


• …a distributed data system (no classical process of the data collecting & storing in centralised repository)

• …a distributed dynamic data system serving the most up-to-date data

• …using a “buddy” service if a data provider lacks infrastructure or expertise/staff

• …an application of open global GeoInformation standards (WMS and WFS) to various topics facilitating the inter-institutional / cross-border / global analyses & modelling

OneGeology is…


Technical facts - 1• Based on interoperability principles using GeoSciML

3.2 (truly INSPIRE compliant)• Maps on distributed servers & sent directly to web

client after a submission of download demand• Map/services data delivered via standard OGC web

service (WMS / WFS)• The list of metadata of maps / services is collected

into a catalogue of services managed “centrally”• Can display / aggregate all the maps• Can display maps in different projections (polar

regions)


Technical facts - 2• Public users can analyse OGC WFS & OGC SLD

(Styled Layer Descriptor) querying of WFS’• Cookbooks, online help• Buddy system – hosting and serving data for another

participant that cannot do it itself & that have technical limitations

• Exporting data to different formats (i.e. KML, WMC)


INSPIRE list adopted

• OneGeology adopted the initial keyword dictionary list for specific topics of geoscience data

• List was taken from OneGeology-Europe project that developed the list compliant with the INSPIRE directive

• This will enable expanding services from serving purely geological data to serving the data from all geological (sub)disciplines

• A need to formalise the terminology related to geological/geoscience topics


The coverage

Service providersParticipants


OneGeology Portal: one-stop-info-service-point


Advanced functionality: use of SLD (Styled Layer Descriptor) to display the polygons presenting a

required lithology or age :

Thanks to a WFS-SLD query, only polygons which age is « Quaternary »

are displayed(Example with Delaware US-DE DGS 100k Surficial Geology)


Advanced functionality: use of WFS to present statistics on polygons displayed- The WFS result (XML / GML) is analysed and transformed into

statistics(Example with United Kingdom (GBR BGS 1:625k Bedrock Age))


Catalogue service (OGC CSW) – managed centrally• All WMS and WFS services and layers (datasets) are instantly

registered into geonetwork catalogue. • The catalogue is then requested by the OneGeology portal

thanks to a CSW request (XML response). • Catalogue service registered in some intl. catals ( GEOSS).


Advantages of distributed data system!• every data provider stays

in control of its own data – on their servers (political issues)

• data is up-to-date (instantly) higher data reliability

• system is more resilient to potential failures


Potential drawbacks of distributed data system!

• Failing connection(s) with data providers datasets not available (solution is a backup in the cloud)

• Security (more vulnerable to hacking)• System complexity (different data providers use

different SW and HW)• Standards (simple and clear cook-books guide data

providers to prepare the data properly and in compliance with standards)


Which additional service could OneG include?• Inclusion of scientific papers, reports, project results

• Inclusion of 3D geological data• Inclusion of other geological thematic data• Bring together & serve more data from geological archives

from around the globe from various data providers/ collectors (geological maps, mineral occurrences, raw geoscience data, “hard to get“ & “archived“ data etc.)

• Integrate OGC data models between USGIN, CCOP, INSPIRE, AGG (Ground waterML, mineral resource occurrences – ERML)

• All georeferenced and interoperable!!!


Thank you for your @10tion!

Thanks to all the OneGeology members for their input (financial and in-kind) and to

supporting organisations!

We encourage you to join OneGeology and to visit us at www.onegeology.org/ and

portal.onegeology.org

¸[email protected]; [email protected]

providing geoscience data globally onegeology as an open geo(science) data model and the advantage...

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