Survey report for marine raw material mapping for the Danish Environmental Protection Agency 2023: Vibrocoring in Danish waters

Thomas Vangkilde-Pedersen, Luna Holland Winther, Henrik Jønsson Granat, Lisbeth Lyngkjær Pedersen, Lis Allaart

Research output: Book/ReportReport (publicly available)


GEUS has carried out fieldwork for the Danish Environmental Protection Agency (Miljøstyrelsen, MST) as part of their marine raw material mapping in 2023 in Danish waters.

The investigations started September 16 and was completed September 28. The survey will hereafter be referred to as the MST 2023 survey. The MST 2023 survey included 32 so-called ‘Fællesområder’ and ‘Potentielle Fællesområder’ as well as three raw material interest areas.

The survey activities were carried out using the survey vessel Fortuna Crane and included two legs of vibrocoring.

Mobilization of the vessel and equipment took place on August 14 in Esbjerg prior to another GEUS survey. In total 15 MST cores were taken during the other GEUS survey as this was logistically beneficial for both projects, and the specific MST-cores were collected on September 3, 5, 6, 14 and 15. Four of the cores were collected in inner Danish waters and 11 in the Baltic Sea around Bornholm. The dedicated MST 2023 survey started on September 16 at Bornholm. A crew change between Leg 1 and Leg 2 took place in Frederikshavn on September 21 and demobilization after the survey took place in Esbjerg on September 28.

Leg 1 started September 16 at Bornholm upon completion of the other GEUS project and was initiated with a transit to the Karrebæksminde area, as MST vibrocores around Bornholm were carried out a few days earlier during the other project for practical reasons. The leg included collection of 19 vibrocores in inner Danish waters and Kattegat before the crew change in Frederikshavn. Three vibrocores were taken off Grenå as part of another project on September 20 and 21.

Leg 2 started on September 21 and four vibrocores were collected in Kattegat and 34 in Jammerbugt and on Jyske Rev, before the project finished off with demobilisation in Esbjerg. During Leg 2, 19 vibrocores were taken off Lønstrup and Løkken as part of another project.

Four periods of weather standby were encountered. One offshore in Aarhusbugten, one in Aarhus harbor, one was used for crew change in Frederikshavn as well as one offshore in Jammerbugt.

A total of 72 vibrocores were collected for MST before and during the MST 2023 survey and during the survey some ship time was also allocated for the collection of 22 vibrocores on other projects, as described above. Details on the vibrocore positions are provided in the survey log, included as Appendix A.
Original languageEnglish
Number of pages19
Publication statusPublished - 10 Jan 2024

Publication series

SeriesDanmarks og Grønlands Geologiske Undersøgelse Rapport

Programme Area

  • Programme Area 2: Water Resources


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