Land-sea altimetric database

Edition 1.0

The main aim is to produce precise digital data with unrivalled resolution (decimetric precision, metric resolution) for French coastal terrain. This solution provides the basic data required to implement many applications and public policies, such as:

• Risk prevention (tsunamis, cyclone swell, rising sea level due to global warming, coastal flooding, flooding, erosion, etc.),

• Coastal planning studies (roads, ports, etc.),

• improved knowledge of the public maritime territory, tracking coastal withdrawal,

• mapping terrestrial and marine habitats,

• creating current models and related applications (tidal and swell current energy, waste dispersal at sea, sedimentary movements, etc.)

• Integrated Coastal Zone Management (ICZM).

This approach is led by Shom (Service Hydrographique et Océanographique de la Marine - Oceanography and Hydrography Service of the French Navy) and IGN (French institute for geographical and forestry information), in partnership with the Ministry of Ecology, Energy, Sustainable Development and the Sea (represented by the Prefect of Guadeloupe), the Guadeloupe Region, the General Council of Guadeloupe, the Guadeloupe Office of Water, the Agency for Geometric Steps in Guadeloupe and the Marine Protected Areas Agency (AAMP).

Litto3D® in Guadeloupe is co-funded by the European Union. Europe is committing to Guadeloupe with the European Regional Development Fund.

The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.

Data may be freely used providing that the source is mentioned.

Do not use for navigation

The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.

No public restriction.

Aucune contrainte

Guadeloupe

The DEM (Digital Elevation Model) is accompanied by layers, which add local metadata. Each layer is supported by the same even mesh as the DEM. One layer provides information on the source of most data used to calculate the node, for each node, and the second layer provides information on the evaluation of the distance between the node in question and the different known points used to calculate altitude.

· bathymetric lidar survey (LADS MkII) completed between 23/02/2011 et le 26/03/2011.

· topographical lidar survey (ALTM31000AE-IGN) completed 05/02/2010 et le 14/03/2010..

· multibeam echosounder surveys :

o BathySaintes campaign shallow: conducted by Shom (S201001500, SMF Simrad EM3002) between 1st and 10th February 2010.

o BathySaintes deep sea campaign: carried out by the Shom (SMF Reson 7111 and Reson 7150) on behalf of the Institute of Physics of the Globe of Paris (IPGP) between 1st and 10th February 2010, campaign co-financed by the ANR ( © IPGP / 2012).

o Kashallow3 campaign: carried out by the IUEM (SMF Reson 8101) on behalf of the University of the Antilles and Guyana (UAG) between January 24 and February 15, 2011, campaign co-financed by the European Union and the Guadeloupe Region (© UAG / 2012).

Collection de données

ISO 19115:2003/19139

1.0