For this product, see the most recent data from the EMODnet Bathymetry project: https://emodnet.ec.europa.eu/en/bathymetry. Bathymetric model (DTM) of the North-East Atlantic, generated from conventional multibeam bathymetry data, prior to the year 2000. The grid spacing is 1000 meters. Bibliographic reference : Sibuet J.C. & al., (2004) - Carte bathymétrique de l'Atlantique nord-est et du golfe de Gascogne : implications cinématiques. Bull. Soc. géol. Fr.T. 175, n°5, pp. 429-442

French Marine Reports unit of european marine's subregions: areas used under the Framework Directive strategy for the marine environment.

For these products, see the most recent data from the EMODnet Bathymetry project: https://emodnet.ec.europa.eu/en/bathymetry. This bathymetric model is the result of compiling data and numerical models prior to 2008 in the Bay of Biscay. These datasets are available at a resolution of 500 m and 1000 m. Contours are also available for both digital terrain model (DTM). Public access granted under certain conditions.

The French national network (REMI) includes a regular monitoring system and a warning system: - The regular monitoring system checks that the level of microbiological contamination in each production area remains within the limits set by the classification defined in the prefectural decree and tests unusual occurrences of contamination. - The warning system is triggered when results of the monotoring programme exceed or are at risk of exceeding the norms defining the quality classes and thresholds, or in case of contamination risk (pollution spillage, storms, etc.), or even in the case of a suspected or confirmed epidemic in shellfish.

REPHY is a national network covering the coast of the French mainland along with that of three of its overseas departments: Martinique, Guadeloupe and Reunion Island. The aims are as follows: - to observe all phytoplankton species in the coastal waters and to monitor events such as coloured water, exceptional blooms, and the proliferation of species which are toxic or disruptive to marine fauna, - Particularly to monitor species producing toxins which are dangerous to shellfish consumers . These objectives are complementary, as the regular monitoring of all phytoplankton species makes it possible to detect known toxic and invasive species, but also to detect potentially toxic species. It is the presence of these toxic species in the water which triggers the monitoring of toxins in shellfish. The mission of REPHY is to monitor shellfish in their natural environment (such as parks and deposits). For shellfish removed from marine environments (that is to say in shellfish logistics establishments or on markets prior to export), national monitoring and control plans are organised by the General Food Directive at the French Ministry of Agriculture. Analyses are performed by the accredited departmental veterinary laboratories as organised by the National Reference Laboratory from the French Food Safety Agency.

Since 2008, the Coastal Chemical Contamination Observation Network (ROCCH) has taken over from RNO (French National Observation Network for Quality in Marine Environments), which had existed since 1974. ROCCH aims to meet national, community and international obligations relating to monitoring chemicals in marine environments. It is therefore more of a control network than a heritage network as RNO once was. The backbone of ROCCH is to apply the European Water Framework Directive (WFD) and to meet the obligations set out in OSPAR Conventions and in Barcelona. As the WFD insisted on decentralization, ROCCH has gone from having just one project leader (the Ministry for the Environment) to having many decision-makers (water agencies, DIREN etc.). Chemical analyses are no longer conducted by IFREMER alone, but are attributed to other partners following calls for tender. ROCC also includes the monitoring of chemicals in shellfish production areas for the Food safety agency (DGAL) and the Ministry for Agriculture and Fisheries. Monitoring focuses on the three regulated metals: mercury, lead and cadmium in the given areas. Monitoring of these chemical contaminants is conducted in the three marine matrices: water, biota and sediment. Testing also includes imposex, the biological effect of tributyltin (TBT), as required by the OSPAR convention.

The "EMODnet Digital Bathymetry (DTM)- 2024" is a multilayer bathymetric product for Europe’s sea and oversea basins covering: • the Greater North Sea, including the Kattegat and stretches of water such as Fair Isle, Cromarty, Forth, Forties,Dover, Wight, and Portland • the English Channel and Celtic Seas • Western Mediterranean, the Ionian Sea and the Central Mediterranean Sea • Iberian Coast and Bay of Biscay (Atlantic Ocean) • Adriatic Sea (Mediterranean) • Aegean - Levantine Sea (Mediterranean). • Madeira and Azores (Macaronesia) • Baltic Sea • Black Sea • Norwegian and Icelandic Seas • Canary Islands (Macaronesia) • Arctic region and Barentz Sea and the Caribbean Sea. The DTM is based upon 21937 bathymetric survey data sets and Composite DTMs that have been gathered from 64 data providers from 28 countries riparian to European seas and beyond. Also Satellite Derived Bathymetry data products have been included from Landsat 8 and Sentinel satellite images. Areas not covered by observations are completed by integrating GEBCO 2024 and IBCAO V4. The source reference layer in the portal viewing service gives metadata of the data sets used with their data providers; the metadata also acknowledges the data originators. The incorporated survey data sets itself can be discovered and requested for access through the Common Data Index (CDI) data discovery and access service that in December 2024 contained > 41.000 survey data sets from European data providers for global waters. The Composite DTMs can be discovered through the Sextant Catalogue service. Both discovery services make use of SeaDataNet standards and services and have been integrated in the EMODnet portal (https://emodnet.ec.europa.eu/en/bathymetry#bathymetry-services ). In addition, the EMODnet Map Viewer (https://emodnet.ec.europa.eu/geoviewer/ ) gives users wide functionality for viewing and downloading the EMODnet digital bathymetry such as: • water depth (refering to the Lowest Astronomical Tide Datum - LAT) in gridded form on a DTM grid of 1/16 * 1/16 arc minute of longitude and latitude (ca 115 * 115 meters). • option to view depth parameters of individual DTM cells and references to source data • option to download DTM in 59 tiles in different formats: ESRI ASCII, XYZ, EMODnet CSV, NetCDF (CF), GeoTiff, RGB and SD • option to visualize the DTM in 3D in the browser without plug-in • layer with a number of high resolution DTMs for coastal regions • layer with wrecks from the UKHO Wrecks database. The EMODnet DTM is also available by means of OGC web services (WMS, WFS, WCS, WMTS), which are specified at the EMODnet Bathymetry portal. The original datasets themselves are not distributed but described in the metadata services, giving clear information about the background survey data used for the DTM, their access restrictions, originators and distributors and facilitating requests by users to originator.

The "EMODnet Digital Bathymetry (DTM)- 2022" is a multilayer bathymetric product for Europe’s sea and oversea basins covering: • the Greater North Sea, including the Kattegat and stretches of water such as Fair Isle, Cromarty, Forth, Forties,Dover, Wight, and Portland • the English Channel and Celtic Seas • Western Mediterranean, the Ionian Sea and the Central Mediterranean Sea • Iberian Coast and Bay of Biscay (Atlantic Ocean) • Adriatic Sea (Mediterranean) • Aegean - Levantine Sea (Mediterranean). • Madeira and Azores (Macaronesia) • Baltic Sea • Black Sea • Norwegian and Icelandic Seas • Canary Islands (Macaronesia) • Arctic region and Barentz Sea and the Caribbean Sea. The DTM is based upon 21937 bathymetric survey data sets and Composite DTMs that have been gathered from 64 data providers from 28 countries riparian to European seas and beyond. Also Satellite Derived Bathymetry data products have been included fro Landsat 8 and Sentinel satellite images. Areas not covered by observations are completed by integrating GEBCO 2022 and IBCAO V4. The source reference layer in the portal viewing service gives metadata of the data sets used with their data providers; the metadata also acknowledges the data originators. The incorporated survey data sets itself can be discovered and requested for access through the Common Data Index (CDI) data discovery and access service that in December 2022 contained > 41.000survey data sets from European data providers for global waters. The Composite DTMs can be discovered through the Sextant Catalogue service. Both discovery services make use of SeaDataNet standards and services and have been integrated in the EMODnet portal (https://emodnet.ec.europa.eu/en/bathymetry#bathymetry-services ). In addition, the EMODnet Map Viewer (https://emodnet.ec.europa.eu/geoviewer/ ) gives users wide functionality for viewing and downloading the EMODnet digital bathymetry such as: • water depth (refering to the Lowest Astronomical Tide Datum - LAT) in gridded form on a DTM grid of 1/16 * 1/16 arc minute of longitude and latitude (ca 115 * 115 meters). • option to view depth parameters of individual DTM cells and references to source data • option to download DTM in 58 tiles in different formats: ESRI ASCII, XYZ, EMODnet CSV, NetCDF (CF), GeoTiff and SD • option to visualize the DTM in 3D in the browser without plug-in • layer with a number of high resolution DTMs for coastal regions • layer with wrecks from the UKHO Wrecks database. The EMODnet DTM is also available by means of OGC web services (WMS, WFS, WCS, WMTS), which are specified at the EMODnet Bathymetry portal. The original datasets themselves are not distributed but described in the metadata services, giving clear information about the background survey data used for the DTM, their access restrictions, originators and distributors and facilitating requests by users to originator.

Pour ce produit consulter les données plus récentes du projet EMODnet Bathymetry : https://emodnet.ec.europa.eu/en/bathymetry. Bathy-morphologie régionale de la façade Manche Atlantique, version 2016, résolution 100 m (WGS84, Mercator latitude 46°N) Le modèle bathymétrique couvre la zone ZEE Manche-atlantique depuis la côte vers les grands fonds. Il résulte principalement de la combinaison de trois modèles bathymétriques : - MODELE BATHY 1: synthèse "ZEE" de données multifaisceau des campagnes ZEEGASC, ZEEGASC2, Sedimanche1, Sedifan, réalisée au pas de 125 mètres (version 2000) et re-maillée ici au pas de 100 mètres. - MODELE BATHY 2 : synthèse Ifremer-Shom au pas de 100 mètres de données bathymétriques sur le plateau continental (version 2010, édition Iftremer-Shom 2014). Les données utilisées proviennent de l'Ifremer, du SHOM et de différents Ports Autonomes. A cette synthèse des corrections complémentaires d'artéfacts ont été appliquées ainsi que l'intégration locale de données additionnelles (Minquiers, Mont-saint-Michel). - MODELE BATHY 3 : complément pour les zones non couvertes par les 2 autres MNT avec le modèle Emodnet bathymetry version 2015. Produit interne Ifremer

Le produit Surval "Données par paramètre" met à disposition les données d'observation et de surveillance bancarisées dans Quadrige, validées et qui ne sont pas sous moratoire. Ce système d'information contient des résultats sur la plupart des paramètres physiques, chimiques et biologiques de description de l'environnement. Les premières données datent par exemple de 1974 pour les paramètres de la qualité générale des eaux et les contaminants, 1987 pour le phytoplancton et les phycotoxines, 1989 pour la microbiologie, du début des années 2000 pour le benthos. Les données sous moratoire ou les données qualifiées "Faux" sont exclus de la diffusion Surval. Une donnée validée dans Quadrige aujourd’hui sera disponible dans Surval demain. Par contre, les fichiers associés à la donnée ne sont pas disponibles dans Surval. L'accès aux données d'observation se fait par lieu. Un lieu de surveillance est un lieu géographique où des observations, des mesures et/ou des prélèvements sont effectués. Il est localisé de façon unique par son emprise cartographique (surface, ligne ou point). Un lieu de mesure peut être utilisé par plusieurs programmes d'observation et de surveillance. Conformément aux exigences de l’ « Open data », toutes les données validées sans moratoire sont diffusées à J+1 et sans traitement. Ainsi tous les paramètres et tous les programmes Quadrige sont diffusés, et regroupés sous forme de thème : - Benthos dont récifs coralliens - Contaminants chimiques et Écotoxicologie - Déchets marins - Microbiologie - Phytoplancton, hydrologie et phycotoxines - Suivi du cycle de vie du bivalve - Zooplancton - Autres Un thème regroupe un ou plusieurs programmes d'acquisition. Un programme correspond à une mise en œuvre d'un protocole, sur une période et un ensemble de lieux. Chaque programme est placé sous la responsabilité d'un animateur. Pour accompagner le résultat, de nombreuses données sont diffusées (téléchargeables en tant que données d’observation), comme : - la description complète du « Paramètre-Support-Fraction-Méthode-Unité »; - la description complète des « Passages », « Prélèvements » et « Échantillons »; - le niveau de qualification du résultat; - une proposition de citation, afin d’identifier tous les organismes contribuant à cette observation. Ces données sont décrites plus précisément sur la page suivante https://surval.ifremer.fr/Astuces/Telechargement-contenu-du-fichier-csv L'emprise géographique est nationale : la métropole et les départements et régions d'outre-mer (DROM). L'accès au téléchargement direct du jeu de données complet (~ 220 Mo) s'effectue par ce lien : https://sextant.ifremer.fr/documentation/surveillance_littorale/surval/data/surval.zip ou https://www.data.gouv.fr/fr/datasets/surval-donnees-par-parametre/ L'accès par la carte permet de configurer des extractions et des graphes de visualisation sur demande (email demandé pour le téléchargement). Pour en savoir plus : le vocabulaire employé sur ce site et dans les fichiers extraits est explicité dans des documents comme le dictionnaire et le manuel saisie Quadrige² ; les thématiques sont plus détaillées dans les consignes thématiques au utilisateurs. https://wwz.ifremer.fr/quadrige2_support/Mon-support-Quadrige/Je-consulte-les-manuels