MOLIT buoy

Infrastructure
(short name)

Reseau Eulerien
(RESEAU EULERIEN)

Installation
(short name)

MOLIT Buoy
(MOLIT)

Location

Loire estuary, France, Atlantic Ocean

Coordinates/Routes

47.46°N - 2.657°W

Bottom depth

12-16 m (depending on tides)

Legal name of organisation

Institut Francais de recherche pour l'exploitation de la mer (IFREMER)

Country

France

Contact

Michel Repecaud

Ifremer REM/RDT/LDCM
Centre de Brest – CS 10070
29280 PLOUZANE – FRANCE
Tel: +33 (0)2 98 22 41 76

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MOLIT is designed for in situ monitoring in large rivers, estuaries and coastal areas. It is used for since many years in the Loire estuary where a two level sampling, surface and 10 m depth, is performed with multiparameter measurements (T, DO, salinity, turbidity, fluorescence). Nevertheless, if needed, the MOLIT hydraulic system can perform sampling at 4 different levels. The whole hydraulic sampling system is protected from bio-fouling by an efficient seawater electrolysis scheme; this bio-fouling protection can be used to protect the tested instruments. The data are available by a wireless communication system or can be stored on board.

Molit buoy is not at sea from November to January (included), so access is impossible in this period.

Web site address: http://wwz.ifremer.fr/webtv/Thema/L-environnement/La-bouee-Molit

Instrument Measured Parameter(s) Elevation / Depth Sampling Frequency of data recovery
NKE MP6 Temperature Surface and 10 m 30 min 12 hours
NKE MP6 Dissolved O2 Surface and 10 m 30 min 12 hours
NKE MP6 Salinity Surface and 10 m 30 min 12 hours
NKE MP6 Turbidity Surface and 10 m 30 min 12 hours
NKE MP6 Fluorescence Surface and 10 m 30 min 12 hours

  • Remote: the measuring system is implemented by the operator of the installation and the presence of the user group is not required,
  • Partially remote: the presence of the user group is required at some stage e.g. installing and un-installing user’s equipment.

Unit of access(UA): month.

Quantity of access available to JERICO NEXT users: 3 UA=3 months.

Users can apply for a minimum access duration of 1 months (1 UA), or for 2 months (2 UA), or for the maximum duration of 3 months (3 UA).

Access duration corresponds to the period of installing, operating and un-installing a measuring system by the users (partially remote access) or in his/her behalf by the access provider (remote access).

Molit buoy is not at sea from November to January (included), so access is impossible in this period.

MOLIT is commonly used for demonstration of prototype instruments. For example, it has been used with the Ifremer nutriment analysers CHEMINI. In this situation the MOLIT platform has shown its ability to handle such situation. It is large enough to allow an easy access for 3 people at the same time. The tested instrument is placed in a cabin and then is protected from seawater splashes, from rain and from bird dropping. Additional batteries can be installed for specific energy demand. Remote instrument operation is possible and real time data access is implemented.

Technical assistance to adapt equipment to the platform and its deployment at sea will be provided by the Ifremer scientific and technical staff. Indeed, Ifremer is used to operate equipment on many fixed platforms like Marel coastal network and seabed observatories like Neptune Canada and Azores Momar.

As well, technical laboratories are available for partners to test their equipment interfaces and drivers before deployment at sea and to perform final metrology check in a high-level marine metrology calibration lab with National Metrology accreditation (see METLAB in Chapter 2). Marine sensor biofouling expertise can be provided to the users.

To be verified with the facility provider.