The update of the coastal topo-bathymetric DEM of the Gironde estuary - downstream with a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project. This DEM covers the downstream part of the Gironde estuary, from Pauillac to its mouth. It is complementary to the DEM covering the upstream estuary. The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance. This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

Le produit topo-bathymétrique côtier de la baie de Saint-Jean-de-Luz et ses abords, à une resolution de 0.0002° (~20 m), a été réalisé dans le cadre du projet TANDEM. Il couvre un territoire comprenant la baie de Saint-Jean-de-Luz et ses abords immediats. Ce MNT est destiné à être implémenté dans les modèles hydrodynamiques du projet TANDEM afin d'estimer les effets côtiers des tsunamis pour l’Atlantique et la Manche, où sont installées les centrales nucléaires françaises depuis environ 30 ans. La référence verticale de ce produit est le niveau moyen des mers.

The bathymetric DEM for the coasts of New-Caledonia with a resolution of 0.001° (~ 100 m) was prepared in the framework of a Shom-IRD partnership as part of the TSUCAL project. The DEM covers the basin from New Caledonia in the west to the Vanuatu archipelago in the east. The DEM is designed to be used in hydrodynamic models in order to improve the pertinence of the Waves-Submersion monitoring programme.

Le produit bathymétrie de façade golfe du Lion – Côte d’Azur d'une résolution de 0.001° (~ 111 m) a été réalisé dans le cadre du projet HOMONIM. Il couvre l’intégralité de la façade métropolitaine méditerranéenne, du littoral jusqu’à environ 2800 m de profondeur. Le MNT est destiné à être implémenté dans les modèles hydrodynamiques afin de produire des prévisions aussi précises que possible des hauteurs d’eau et d’états de mer à la côte et donc d’améliorer la pertinence de la Vigilance Vagues-Submersion. La référence verticale de ce produit est le niveau des plus basses mers astronomiques.

Le MNT topo-bathymétrique côtier d'une partie du golfe normand-breton à une résolution de 0.0002° (~ 20 m) a été réalisé dans le cadre du PAPI Saint-Malo. Le MNT englobe le plateau des Minquiers au Nord-Ouest jusqu'à la baie du Mont-Saint-Michel au Sud-Est. Le MNT est destiné à être implémenté dans les modèles hydrodynamiques afin de produire des prévisions aussi précises que possible des hauteurs d’eau et d’états de mer à la côte et donc d’améliorer la gestion du risque de submersion marine.

A bathymetric DEM for the coasts of Gulf of Lion – Côte d’Azur with a resolution of 0.001° (~ 100 m) was prepared as part of the HOMONIM project. It covers the entire Mediterranean metropolitan facade. The model ranges off-shore to a depth of 2800 m. The DEM is designed to be used in hydrodynamic models in order to produce high-precision forecasts for coastal water levels and sea conditions and therefore improve the pertinence of the Waves-Submersion monitoring programme. This product is available with the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical datum.

The bathymetric DEM of Tahiti and Moorea with a resolution of 0.001° (~ 100 m) was produced by the Shom for Météo-France (Inter-regional Direction in French Polynesia). This DEM covers a 10 km radius around the islands of Tahiti and Moorea in order to meet the need for marine submersions modelling in French Polynesia. The vertical reference for this product is Mean Sea Level (MSL).

The bathymetric DEM for the coasts of Corsica with a resolution of 0.001° (~ 100 m) was prepared as part of the HOMONIM project. It covers the entire Corsican margin. The model ranges off-shore to a depth of 3000 m. The DEM is designed to be used in hydrodynamic models in order to produce high-precision forecasts for coastal water levels and sea conditions and therefore improve the pertinence of the Waves-Submersion monitoring programme. This product is available with the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical datum.

The update of the coastal topo-bathymetric DEM of the Gironde estuary - upstream with a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project. This DEM covers the upstream part of the Gironde estuary, from Pauillac to Bordeaux on the Garonne and to Libourne on the Dordogne. It is complementary to the DEM covering the downstream estuary (between Pauillac and the mouth of the Gironde). The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance. This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

The coastal topo-bathymetric DTM of the Arcachon basin and its surroundings at a resolution of 0.0002° (~ 20 m) was produced as part of the HOMONIM project. The DTM covers the coastline of a part of the Gironde department, from the Carcans and Hourtin ponds in the North, to the Cazaux and Sanguinet lakes in the South. It covers the entire Arcachon basin and extends offshore to about 40 m depth. The DTM is intended to be implemented in hydrodynamic models in order to produce accurate forecasts of water heights and sea states at the coast and to improve the French storm surge warning system. This product is available with the Lowest Astronomic Tide (LAT) or with the Mean Sea Level (MSL) as a vertical datum.