Geology of outer Horns Rev, Danish North Sea

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Abstract

In 2006, Dong Energy initiated the development of the Horns Rev II offshore wind farm in the North Sea (Fig. 1). In order to evaluate and map the characteristics of the surface features of the sea bed and to characterise the subsurface in the wind farm area, the Geological Survey of Denmark and Greenland (GEUS) conducted a geophysical survey of the area. The survey utilised a variety of instruments: sparker, side-scan sonar, marine caesium magnetometer and a multibeam echo-sounder. In addition, information on the subsurface sediments was obtained by cone penetration tests (CPT) and by drilling to 30–50 m below the sea bottom. Geological correlation of the CPT results with the other survey results was extremely complicated but was required in order to understand the architecture of the ice marginal glaciotectonic complex. Information on the geology is crucial for evaluation of the geotechnical problems of the region.
Translated title of the contributionGeologi af ydre Horns Rev, Dansk Nordsø
Original languageEnglish
Pages (from-to)41-44
Number of pages4
JournalGeological Survey of Denmark and Greenland Bulletin
Volume15
DOIs
Publication statusPublished - 10 Jul 2008

Programme Area

  • Programme Area 5: Nature and Climate

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