DBPapers
DOI: 10.5593/SGEM2014/B21/S8.070

DATA MODEL FOR MULTIDIMENSIONAL GEOLOGICAL SUBSURFACE DATA IN GEOGRAPHIC INFORMATION SYSTEM

L. Kondrova
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-10-0 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 1, 549-554 pp

ABSTRACT
This paper deals with the status of development in the field of creation of digital geological subsurface models and their storage within enterprise databases. Focus is put on software used for creating the models, on data management, and the level of automation of the modeling. Solutions of several geological survey organizations (GSOs) and the latest advances in the research of this topic within the Czech Geological Survey are compared. The main source of information about subsurface geology in the Czech Republic is the database of boreholes and their logs. Other data sources include traditional 2D geological maps, geological cross-sections, geophysical measurements and interpretations, and results of previous research projects (usually in the form of isolines or grids). Topographical base maps are also used, especially the elevation information in the form of digital elevation model or grid of elevation points. All these sources of information have to be included in the data model. Most of the mentioned GSOs have been developing their multidimensional models for many years and have come up with their own software solution or a combination of commercial software packages to meet up their needs regarding the purpose of the model, modeling method, scale, requirements for interactive use, visualization etc. The enterprise Geographic Information System (GIS) of the Czech Geological Survey is built upon Esri technologies, therefore our aim is to use this technology for multidimensional data and easily combine them with 2D geoscientific data in the GIS environment. We are testing the possibility to use the extensions to ArcGIS Desktop for these purposes, especially the 3D Analyst and the ArcHydroGroundwater extensions. The Czech Geological Survey is so far producing regional or local 3D models of subsurface geology, but not in a standardized way and with unified data structure. Our aim is to produce regional to national models with the 3D layer-based approach that would be based on central data administration and that could be further improved or differentiated by a set of attributes or parameters for different applications (groundwater deposits assessment, CO2 storage, etc.)

Keywords: 3D geological model, data model, GIS, geodatabase, subsurface geology

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