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From Structural to Parametric: Advancing the Geological 3D Structural Model of the North German Basin (TUNB) with Seismic Velocity Modelling within the TUNB Velo 2.0 Project

The TUNB project, conducted from 2014 to 2021, marks an important step in the geological 3D modelling of the North German Basin. Through the collaboration of the State Geological Surveys of the participating federal states and the Federal Institute for Geosciences and Natural Resources, a comprehensive 3D model was created, comprising 13 geological horizons and important structural elements such as faults and salt structures. The model finds application, for example, as a basis for further investigations and planning in the subsurface, ranging from CO2 storage to the final disposal of radioactive materials.

The follow-up project, 'TUNB Velo 2.0,' extends this work by evolving the geological 3D structural model towards a parameterized volume model, with 'seismic velocity' as the key parameter. This enhancement allows the precise conversion of seismic data from the time domain to the depth domain, thereby correcting the apparent geometry of geological structures distorted by velocity variations. This allows for a more realistic spatial representation of the geological subsurface and paves the way for the creation of more accurate and detailed future 3D geological models in this region.

TUNB Velo 2.0 marks a significant step forward in the geological exploration of the North German Basin and is a vital tool for enhancing the precision and resolution of future geological 3D models. In our presentation, we will introduce the project and its history, summarize ongoing work, discuss key challenges, and highlight the expected benefits for future projects.

Details

Author
Frithjof A. Bense1
Institutionen
1Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Germany
Veranstaltung
GeoSaxonia 2024
Datum
2024
DOI
10.48380/9sfe-wv34