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3D structural model of the Federal State of Hesse (Germany) for geopotential evaluation

[Geologisches 3D-Modell von Hessen zur Bestimmung von Geo-Potenzialen.]

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A three-dimensional structural model of the Federal State of Hesse was developed within the framework of the project "3D modelling of the deep geothermal potential of Hesse". The modelling was conducted using the software GOCAD. More than 4150 well data from the Hessian well database, hosted by the Geological Survey of Hesse (HLUG), as well as from the Hydrocarbon Well Database of the German Geological Surveys, hosted by the Geological Survey of Lower Saxony (LBEG), were used. Furthermore, all geological cross-sections from geological maps and from other literature were taken into account. Additional data such as contour maps, palaeogeographic maps and existing structural models were used. In order to provide uncertainty information to third party users, it was integrated into the model itself. were created from the structural model, attributed with rock physical data (cf. Bär et al. 2011). Depending on these parmeters, the model is highly capable to evaluate geopotentials. The presented method for geopotential evaluation is based on the (AHP), which is a very common Multiple Criteria Decision Support System. The method can be used to identify and visualise different geopotentials cell based using many different parameters determining each potential. In addition to the evaluation of the deep geothermal potential the model and the presented method can be used to evaluate further geopotentials. The intersection of different potentials may then help to identify and visualise their conflicts of use and their synergetic use, respectively.

German
Für das Projekt zur ,,3D-Modellierung der geothermischen Tiefenpotenziale von Hessen" wurde ein geologisches Modell mit der Software GOCAD erstellt. Dafür wurden mehr als 4150 Bohrungsdaten aus der Bohrdatenbank des Hessischen Landesamts für Umwelt und Geologie (HLUG) sowie der Bohrdatenbank des Kohlenwasserstoffverbundes der Staatlichen Geologischen Dienste Deutschlands am Landesamt für Bergbau, Energie und Geologie Niedersachsen (LBEG) genutzt. Des Weiteren fanden sämtliche relevanten geologischen Schnitte der geologischen Karten von Hessen Verwendung. Weitere Literaturdaten, wie z. B. Isolinienpläne, paläogeografi sche Karten und Strukturmodelle wurden ebenfalls für die Modellierung genutzt. Um Dritten Informationen zur Modellunsicherheit leicht zugänglich zu machen, wurden diese den Flächen direkt als Attribute zugewiesen. Anhand des geologischen Strukturmodells wurden ,,Stratigraphic Grids" erstellt. Die Zellen dieser 3D-Körper wurden dann mit gesteins- und gebirgsphysikalischen Parametern attributiert (vgl. Bär et al. 2011). In Abhängigkeit der verfügbaren Parameter bietet sich das Modell an, mittels der hier vorgestellten Methode Geopotenziale dreidimensional zu identifi zieren und zu visualisieren. Die Methode zur Bestimmung der Geopotenziale nutzt den weitverbreiteten entscheidungsunterstützenden ,,Analytic Hierarchy Process" (AHP). Neben der Bestimmung von tiefengeothermischen Potenzialen ist das Modell sehr gut geeignet, um weitere Potenziale zu evaluieren. Durch den räumlichen Verschnitt verschiedener Potenziale können potenzielle Nutzungskonfl ikte oder Nutzungssynergien identifi ziert und dreidimensional visualisiert werden.
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Keywords: 3D MODELLING; AHP; GEOPOTENTIAL; GEOTHERMAL ENERGY; GERMANY; GOCAD; HESSE; UPPER RHINE GRABEN

Document Type: Research Article

Publication date: 01 December 2011

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  • Zeitschrift der Deutschen Gesellschaft für Geowissenschaften (ZDGG) is an international peer reviewed journal that accepts papers on research and applied topics in the Earth Sciences. It is published online and in print. One volume, consisting of four issues is published annually. The journal is continously published by the German Geological Society since its foundation in 1848. It was relaunched in 2005.

    ZDGG invites the submission of English, German and French language papers from all fields of geology, hydrogeology, paleontology, tectonics, sedimentology, engineering geology and of course environmental geology to name a few. The editors of ZDGG also invite suggestions for thematic issues.
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