Regular grid model of the emerged coastal strip, with a 50 centimeters resolution, which expresses the orthometric altitudes of the surface of the territory, including the natural and artificial elements found on the ground (trees, buildings, etc.).

Regular grid model of the emerged coastal strip, with a resolution of 50 cm, which expresses the orthometric altitudes of the terrain with the existing constructions in the territory (buildings, walls and other structures).

Orthophoto (mosaic of rectified aerial images) of the coastal strip (total or partial), with a resolution generally between 10 and 15 cm above the ground, generated from photogrammetric flights.

Regular grid model of the emerged coastal strip, with a 1 meter resolution, which expresses the orthometric altitudes of the surface of the territory, including the natural and artificial elements found on the ground (trees, buildings, etc.).

Regular grid model of the emerged coastal strip, with a 1 meter resolution, which expresses the orthometric altitudes of the surface of the territory, including the natural and artificial elements found on the ground (trees, buildings, etc.).

Regular grid model of the emerged coastal strip, with a resolution of 50 cm, which indicates the orientation of the slope at each point of the terrain with respect to north.

The orthophoto is a cartographic document that consists of a vertical aerial image which has been rectified in such a way that the same scale is kept in the entire surface of the image, being a geometric representation on scale of the terrestrial surface. It is a orthophoto with a resolution of 25 cm generated from images with a pixel resolution variable according to the zones. The color orthophoto (OF-25C) provides information about the visible area of the electromagnetic spectrum. Shows the combination of RGB bands that correspond to the Red, Green and Blue channels, a combination called "natural color".

Regular grid model of 25 centimeters resolution, from the territory of the Barcelona metropolitan area, which expresses the orthometric altitudes of the surface of the territory, including the natural and artificial elements found on the ground (trees, buildings, etc.).

The metropolitan topobathymetric elevation model is a representation of the surface of the coastal strip, both the emerged part (dry beach) and the submerged part, up to an approximate depth of between 15 and 20 meters. The depth is represented with a regular grid of 1 meter pixel size. The emerged part is measured with topography methods, the first meters of the submerged part are measured with a single-beam echosounder and the rest is measured with a multi-beam echosounder, which provides very detailed data of the seabed.