Shom is the national referent for the level of the sea in situ on all areas under French jurisdiction. In this capacity, he assures under the acronym REFMAR different coordination functions in the collection and dissemination of public data related to water level observations, in order to promote their use in multiple applications within the framework of international recommendations.

Shom manages a network of permanent digital coastal tide-gauges on French coasts: the RONIM Sea Level Observation Network. Most tide-gauge observatories are partnered with one or more local partners.<br /><br /> Four main types of data are available for download:<br /> - “Raw high frequency" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 1-minute measurement; integration time 15 seconds (on the minute); sampling period: 1 second.<br /><br /> - "Raw non-real time" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.<br /><br /> - "Validated non-real time" data: observations checked and validated by Shom from the "Raw non-real time" data. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.<br /><br /> - "Validated hourly" data: observations checked and validated by Shom, generated from "Validated non-real time" data. Hourly measurement obtained from the Vondrak filter with triangular weighting. The hourly height cannot be calculated in the event of an observation gap greater than 1.5 hours.

Guyadiv is a network of permanent forest plots installed in French Guiana. The site of Guyadiv in Counami is composed of 19 1200sq.m-plots. A complete inventory has been made on these plots, during 3 inventory sessions in 2000, 2001 and 2002. 1743 trees have been inventoried, with 92,2% to 100% of trees identified to species level. We only have the point coordinates and not the precise demarcation of the sample plots. In order to calculate the bounding box for these plots, we have expanded the point location 500 meters in each direction.

The site Quartzites is composed of two 3km-transects (20m wide). 2638 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). No fauna inventories available. 276 under-storey plants have been recorded on 17 25m²-plots by Institut de recherche pour le développement (IRD). Soils have been described using 13 samples (1.20m depth max.) and two soil pits (1.50m depth). Laboratory analyses are available for one profile and for the two soil pits

Le produit ORTHO-SATELLITE de l'IGN est une base de donnée d'ortho-images satellitaires, dérivées des images acquises par les satellites sub-métriques tels que PLEIADES 1A et 1B, WORLDVIEW-2. La zone 7 couvre les villes de St Georges et d'Oyapoqué, le long du fleuve Oyapock. L'image est très ennuagée.

Ce produit est une orthophotographie aérienne numérique couleur de la zone anthropisée d'Iracoubo (Organabo) du 10/08/2012 rectifiée dans la projection adaptée au territoire couvert.

Couverture de la Guyane par des images SPOT5 à 2,5 m ortho‐rectifiées et mosaïquées.

Ce produit est une orthophotographie aérienne numérique couleur de la zone anthropisée de Mana (bassin Mine d'Or) du 19/10/2012 rectifiée dans la projection adaptée au territoire couvert.

Ce produit est une orthophotographie aérienne numérique couleur de la zone anthropisée de Mana (RD10) du 13/08/2012 rectifiée dans la projection adaptée au territoire couvert.

Le produit BD ORTHO® IGN 2011 est une collection de mosaïques d'orthophotographies numériques en couleurs (RVB) et Infra-Rouge (IR), rectifiées dans la projection adaptée au territoire couvert. Il s'agit de données "non validées".