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FRAGILE EARTH: Geological Processes from Global to Local Scales and Associated Hazards (4-7 September 2011)

Paper No. 8
Presentation Time: 14:15

HANDLING OF 3D SPATIAL DATA FOR JOINT CCS PROJECT CO2-MoPa


THOMSEN, Andreas1, SCHMIDT, Sabine1, GÖTZE, Hans-Jürgen2, ALTENBRUNN, Kerstin2, BREUNIG, Martin3, BUTWILOWSKI, Edgar3 and KUPER, Paul Vincent3, (1)Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 1, Kiel, 24118, Germany, (2)Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 1, Kiel, 24118, (3)Geodetic Institute, Karlsruhe Institute of Technology, Campus Süd, Geodätisches Institut Englerstr. 7, Building 20.40, Karlsruhe, 76131, Germany, athomsen@geophysik.uni-kiel.de

In the “Geotechnologien” research project “Modelling and Parameterisation of CO2 Storage in Deep Saliniferous Formations for Dimension and Risk Analyses”, a digital model of a virtual CO2 storage in a saline aquifer is developed. 10 subprojects co-operate to establish the hydrological, geochemical, geomechanical and geophysical processes and their parameters determined by laboratory experiments, aiming at increased reliability of risk estimation, monitoring and long term prognosis.

The subproject M3 “Parameter Identification for Modelling – Validation and Visualization” (Thomsen 2010) aims at the support of a synoptic interpretation of the individual models by a distributed, Web based system. Besides classical Web servers and RDBMS it comprises the 3D/4D DBMS DB4GeO for the handling of spatial data, a stereo visualization environment and a meta-information database.

Meta-information is organized at two levels: Resource descriptions are handled by the XML DBMS “eXist”, using XQuery and XSLT. Relationships of resources are modeled as “Topic Maps” using “Wandora” software. Information flow is modeled as a bipartite subgraph with ‘process’ and ‘data’ nodes.

For stereo visualization of complex geometries, subproject M3 in Kiel uses a “GeoWall”-environment; subproject M1b at UFZ Leipzig uses the CAVE-like “TESSIN-Vislab”. An exchange of models is possible.

Within the system, DB4GeO (Breunig 2010) manages the comprehensive geological 3D models. The object-oriented DBMS software developed at Karlsruhe Institute of Technology is written in Java, based on the OODBMS db4o. Originally only simplicial complexes were supported; recently structured grids have been added. DB4GeO is accessed via spatial services built from basic geometric and topological operations; spatial access is based on R-trees. Data are organized in ‘projects’ comprising ‘spaces’, each with coordinate system, scale, and spatial and thematic objects. Present research focuses on the composition of simplicial complexes into complex objects e.g. in BREP, and on the hierarchical aggregation of objects. Generalized Maps (GMaps) provide a unified approach for topological modelling. A set of elementary and complex topological operations and their implementation has been developed. An application example is presented in (Breunig 2011).

Session No. 5

T8A. Geotechnologien
Monday, 5 September 2011: 11:00-15:30
A 015 (Ludwig-Maximilians-Universität München)
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