Aller au contenu. | Aller à la navigation

Laboratoire d’Etudes en Géophysique et Océanographie Spatiales

Outils personnels

This is SunRain Plone Theme


Vous êtes ici : Accueil / Equipes de Recherche / ECOLA / Outils/Produits / COMODO tools / bathymetry


Par ECOLA Dernière modification 12/11/2013 10:56
bathymetry processing

For shelf and coastal ocean modelling, bathymetry is one of the most critical parameter. In along-shore configuration, accuracy of bottom topography needs to be better than 1 meter, and resolution close to 100m.


Digital terrain model construction

DTM are built from three main type of data:

  • depth soundings, multi-beam data, LIDAR
  • elevation DTM (such as SRTM)
  • pre-existing DTMs (to constrain transition at DTM boundaries)

Unstructured mesh techniques (linear triangles) are used to map bathymetry and elevation on a regular (structured) grid. Reference levels (ellipsoid, geoid, mean sea level etc...) can be dealt with to insure metric consistency.

Numerical terrain model construction example

Actions sur le document