Physical environment - Modelled depth data (bathymetry plus sea level)

Date(s) (Publication)
Custodian(s): CHARM Consortium
Resource provider(s): Alain Menesguen
Affiliation(s) 1 : Ifremer
2 : CHARM Consortium
Credit SHOM / IFREMER
ID CHARM_SHOMIFR_BATHY_R
Abstract Depth is here bathymetry plus mean sea level. It adds the bathymetry raster to that of mean sea level. Depth is more relevant than bathymetry alone for ecological point of view. Used as layer for habitat
Keywords Oceanography, CHARM, Altitude, modèle terrestre numérique, océanographie
Lineage Bathymetric data (or zero level, or low tide, corresponding to a tidal coefficient of 120) were derived from SHOM navigation charts. A regular square grid of 1.8 km² resolution, approximately corresponding to the English Channel, was obtained. Mean sea level (or mid-tide, corresponding to a tidal coefficient of 70) was estimated with the MARS 3D hydrodynamic model (Le Roy & Simon, 2003). This model solves equations of Saint-Venant type, to estimate mean current and the position of the free
Utilisation research-only