Institute for Energy Transition
dedicated to Marine Renewable Energies
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Annex IV logo
12/12/2018

France Energies Marines joins the international programme called Annex IV

ABIOP logo
10/12/2018

Innovative work and promising results

APPEAL - Mediterranean campaigns
04/12/2018

Two campaigns in Occitania to study in an integrated way the impact of floating wind farms

Example of colonization by benthic species of a sumarine cable - BREBENT Project, FEM-IFREMER
14/08/2018

To study in an integrated way the impact of floating wind farms.

MISTRAL sea test site: Informational meeting
17/09/2018

Informational meeting at Port-Saint-Louis-du-Rhône city on September 14th.

IMPALA

Impacts on micro-plankton of artificial upwelling inputs

Duration: 3 years

Project description

The IMPALA project focuses on Ocean Thermal Energy Conversion (OTEC) which consists of using the temperature difference between the surface and the depths of the ocean to operate a thermal machine. The production of OTEC is optimal when the temperature difference becomes greater than 20°C (typically 5°C at depth at -1000 m and 25°C at surface) which is the case in tropical areas.
The IMPALA project aims to study the potential impacts of deep water discharges in the subsurface of an ocean thermal power plant. Indeed, the subsurface supply of water of very different background, temperature and chemical composition, as well as the cooling of surface water at the exit of the exchanger, could locally induce a modification of the functioning of the planktonic ecosystem equivalent to the implementation of an artificial upwelling.

Objectives

  • Specify the biogeochemical processes involved in an artificial upwelling related to the operation of an OTEC plant in an oligotrophic environment
  • Improve knowledge of tropical environments and their biogeochemical functioning in order to apply it to the study of the impacts of the discharge of future OTEC plants at sea

Partners

Coordination: France Energies Marines
Scientific and technical management: UBO

IMPALA project partners