New seismic data for CO2 storage potential mapping added to the Danish Deep Subsurface Data portal

Published 05-07-2024

Processed seismic data from Stenlille, Havnsø, Gassum, Rødby, Thorning, and Jammerbugt are now freely available.

Figure: The six locations for seismic data collection are shown here in a section from the Deep Subsurface Data portal. The lines represent the stretches where data was collected. The data can be viewed by selecting them as a layer under ‘Seismic Data’ in the menu.

Data from the original processing of the GEUS2023-THORNING 2D survey, as well as the reprocessed dataset, are now freely accessible via the Danish Deep Subsurface Data Portal:

Direct links to details and download of the datasets:

The Geological Survey of Denmark and Greenland (GEUS) has, in recent years, undertaken extensive work to map the potential for CO2 storage in the Danish subsurface. Between 2022 and 2024, GEUS conducted preliminary surveys of eight areas in Denmark. In connection with these surveys, new seismic data were collected to map the deeper geological structures in the subsurface.

With the release of processed data from the GEUS2023-THORNING 2D survey, data is now freely available via the Deep Subsurface Data portal for all areas where GEUS has acquired new seismic data. These areas include Stenlille, Havnsø, Gassum, Rødby, Thorning, and Jammerbugt.

Free and open data

GEUS is the national databank for deep seismic data and has received and archived data from seismic surveys since 1948. In addition to the already available 3D data, released boreholes, and GEUS’s newly collected data, GEUS has, over the past two years, worked to release and make accessible older 2D datasets from the archive.

Through the Deep Subsurface Data portal, there is now free access to download processed data from deeper 2D surveys from almost all archived land-based surveys, nearshore surveys in the North Sea, and inner Danish waters, except Bornholm.

Figure: In the Deep Subsurface Data portal, all datasets and boreholes can be freely accessed for download.

Old data future-proofed

Some older seismic data have been reported as analogue data in paper format, which has been scanned and made available as image files. GEUS has vectorised and navigation-spliced a selection of image files from several datasets. This means that there is now access to the datasets in a digital format that can be used directly in modern applications.

Figure: GEUS’s newly collected data and digitised older datasets are shown here in a section from the Danish Deep Subsurface Data portal.

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Malene David Jensen-Juul
Communications Officer
Press and Communication