Institute for Energy Transition
dedicated to Marine Renewable Energies
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GEOSISMEM project
04/05/2019

Reducing the cost of seabed characterization

Progress meeting continued
09/04/2019

Continuation of progress meetings

Bastien Taormina, PhD student at France Energies Marines  and Ifremer, in front of his experimentation set‐ up
28/02/2019

Is lobster sensitive to the electromagnetic field of underwater power cables?

First expert work in the framework of COME3T project
31/10/2018

Three submitted themes, restitution in few months

Online survey
12/02/2019

Participating in user needs consultation

Latest>News>Fixed offshore wind

Fixed offshore wind

04/05/2019

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.