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France Energies Marines rejoint le programme international WREN

France Energies Marines joins the international WREN programme

Rapport annuel 2019 IEA-OES

Global wave and tidal stream energy production surges tenfold over last decade

New dives in the Mediterranean Sea

New dives in the Mediterranean Sea

Felipe Lucero

Hosting a Chilean MERIC researcher

3e campagne hivernale de mesures

Launch of the 3rd winter measurement campaign

Latest>News>Fixed offshore wind

Fixed offshore wind


Reducing the cost of seabed characterization

Among the concerns of offshore wind energy operators, competitiveness, and therefore cost reduction, are high on the agenda. In this context, preliminary geotechnical studies are particularly concerned because they are very expensive. These are crucial for the dimensioning of wind turbine foundations because they allow the characterization of seabed mechanics. However, this type of study requires sea campaigns with the deployment of corers to collect soil samples that are then analyzed in laboratory.

It is in this context that the GEOSISMEM collaborative R&D project, which will last 3 years, was initiated in 2018. Coordinated by France Energies Marines and scientifically managed by the University of Western Brittany, it also closely involves Ifremer and MAPPEM Geophysics. The objective of this project is to develop a new soil characterization methodology using geophysical data that requires lighter and less expensive means.

The results of a first sea campaign SYCOPO conducted off Concarneau (Brittany) in 2018 showed a good complementarity between electromagnetic and seismic measurements. These results were presented at the SAGEEP 2019 in Portland (United States) in March 2019.

Work is currently underway to define a methodology to transform geophysical data into geotechnical data. A new sea campaign will be organized in August 2019 on the site of the future Courseulles-sur-Mer park (Normandy). The results of the new methodology will be compared with existing geotechnical studies.