Establishing offshore wind farms is a far more demanding task than building them on land. The composition of the seabed must be described including natural and man-made obstacles on the seabed.
GEO can do it all - carry out geophysical surveys and geotechnical site investigations, determine suitable locations for wind turbines, and take samples for analysis. The samples are then analysed and described to form the basis for the consultancy services. Further more, GEO offers advanced geotechnical foundation design.
Firstly, the seabed is investigated using geophysical methods, such as multibeam and seismic surveys. Both methods register the sea depth as well as the seabed and its composition. These methods are often supplemented by sidescan sonar, which builds a picture of the seabed and the obstacles on the seabed. The result of the geophysical surveys are important pawns in the planning of the geotechnical surveys.
The final planning and design of the turbines' foundations and their appropriate position demand detailed information about the seabed's composition. Here, CPT and vibrocore samples are carried out from GEO's specially designed seabed rigs, GEOscope and GEOceptor. The latter can perform both types of testing. From these tests, interesting points are selected for further investigation, geotechnical borings are carried out and samples are taken for further analyses at our laboratory.
Signature project: Krieger's Flak