Deployment of a new RONIM tide gauge observatory in Port-la-Nouvelle (Mediterranean - Aude)

A new RONIM tide gauge observatory was installed in late May 2013 by SHOM in Port-la-Nouvelle (Languedoc-Roussillon region) in order to provide additional sea level observations. This new facility strengthens the partnership between SHOM and the Languedoc Roussillon region (funder), with which SHOM already operates the tide gauges in Sète and Port-Vendres.

 

Marégraphe de Port-la-Nouvelle (Crédits SHOM - Noé Poffa, mai 2013)

Tide gauge observatory in Port-la-Nouvelle (Photo credits SHOM - Noé Poffa, May 2013)

 

Presentation

On Wednesday, May 29, the installation of a new tide gauge, funded by the Languedoc Roussillon region, was finalized by the technical teams of SHOM in Port-La-Nouvelle, near Narbonne.

 

44th RONIM tide gauge!

This is the 44th tide gauge in SHOM's RONIM network, operated in the main ports of metropolitan and overseas France in partnership with local coastal stakeholders.

The RONIM project establishes and maintains a national network of modern tide gauges that measure sea level continuously on the French coast. RONIM also disseminates the data to the users of the sea in real-time (raw data) and time-delayed (validated data).

This new facility strengthens the partnership between SHOM and the Languedoc Roussillon region, with which SHOM already operates the tide gauges in Sète and Port-Vendres. The Port-La-Nouvelle tide gauge measurements can be viewed and downloaded on the REFMAR portal.

 

Composition of the observatory

The Port-la-Nouvelle tide gauge observatory is composed of:

  • a Krohne Optiflex radar sensor;
  • an Elta data logger;
  • a dual data transmission system by GPRS and ADSL (coming soon).

 

Why observe the sea level?

Measuring water levels is important for many reasons, including:

  • safe navigation at port entrances,
  • improving tidal predictions and hydrodynamic models,
  • monitoring the rise in mean sea level to support the French plan for adapting to climate change (PNACC),
  • calibrating satellite altimetry measurements (Jason 1, 2 and 3, Cryosat 2, Sentinel 3 satellites)
  • providing valuable information for integrated coastal management (coastline, habitats,),
  • statistical and historical studies of extreme levels and storm surges,
  • forecasting information for coastal oceanography (Prévimer EuroGOOS),
  • support for the national tsunami warning center in the Mediterranean and North-East Atlantic (CENALT) operated by the CEA in partnership with SHOM and CNRS,
  • support to the storm surge and flood warning system operated by Météo-France in partnership with SHOM,
  • etc.

 

Reference:

 

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