We are pleased to announce that DynamOcean has been selected by the Golfe du Morbihan – Vannes Agglomération (GMVA) urban community to install two new tide gauge observatories along the coast!
Flood prevention programme
The flood prevention action programme (PAPI) initiated by GMVA highlighted the vulnerability of coastal areas in this territory, as well as a lack of knowledge about the propagation of the tidal wave and tools for monitoring coastal hazards within the Gulf.
To address this shortfall, GMVA has decided to install two tide gauges in the Gulf of Morbihan. The locations were chosen with the help of Shom (Service Hydrographique et Océanographique de la Marine), which also drafted the specifications and contributed to the selection of the service provider.
Following this first stage, DynamOcean's mission is to provide and install two radar-type tide gauges in the selected site: the Kerino swing bridge, in Vannes, and the Pen Lannig pier, in Larmor-Baden.
Better characterisation of coastal hazards
The objective of these new tide gauges is to measure the sea level variations at high frequency (1 Hz), continuously and for as long as possible. These measurements will allow to:
- Improve tide prediction;
- Contribute to metocean and coastal hazards warnings (e.g. wave-submersion);
- Improve the metocean and coastal hazards characterisation;
- Determine locally and precisely the mean sea level, and monitor its evolution in the context of climate change.
Shom will also link the observatory to a national vertical reference and disseminate the measurements as open data, via the REFMAR network, while preserving the historical measurements. These will thus be fully accessible and are likely to be of interest for:
- local authorities;
- scientific organisations;
- operational warning centres;
- State services;
- sea and coastline users.
DynamOcean is eager to contribute to a better understanding of the sea level in the Gulf of Morbihan and to work with the Shom when setting up these observatories.