GEOSISMEM

Geophysical surveys for the seabed characterisation of offshore renewable energy sites

Duration: 36 months (2018 - 2020)

Context

Competitiveness, and therefore cost reduction, are hot topics for offshore wind energy players. In this context, preliminary geotechnical studies are particularly concerned because they are very expensive. They are crucial for the design of wind turbine foundations as they allow the mechanics of the seabed to be characterised. However, this type of study requires campaigns at sea with the deployment of coring machines to take soil samples which are then analysed in the laboratory. It is therefore necessary to develop alternatives to the sole use of geotechnics.

Objective

To develop a new soil characterisation methodology based on a combination of geophysical and geotechnical data in order to make recommendations for use in the offshore wind sector.

Scientific and technical contents

  • Development of new methodologies for processing existing geophysical data
  • Implementation of geophysical multitrace seismic and electromagnetic measurements
  • Development of an effective methodology for optimising geophysical and geotechnical surveys
  • Drafting of recommendations relating to the integration of geophysical data into site characterisation for project engineering purposes

Resources

Project sheet (PDF)

Partners and funding

This project is led by Université de Bretagne Occidentale and France Energies Marines.

The total project budget is €775K.

This project receives/received funding from France Energies Marines and its members and partners, as well as French State funding managed by the National Research Agency under the Investments for the Future Programme (ANR-10-IEED-0006-27).

Photo crédit: MAPPEM Geophysics

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