2ba54b4c-f242-4337-b8b6-92e77978700e Satra Le Bris Catherine IFREMER 02 98 22 46 32 02 98 22 45 70 Centre Bretagne - ZI de la Pointe du Diable - CS 10070 - 29280 Plouzané Centre Bretagne - ZI de la Pointe du Diable - CS 10070 - 29280 Plouzané Brest France France Catherine.Satra@ifremer.fr pointOfContact 2025-12-30T15:06:53.254586Z ISO 19115-3 - SEXTANT ISO 19115-3 - SEXTANT 1.0 2 false WGS 84 (EPSG:4326) EPSG 7.4 Modèle Numérique de Terrain ETOPO1bedrock Modèle Numérique de Terrain ETOPO1bedrock ETOPO1 1 Arc-Minute Global Relief Model etopo1 etopo1 2008-09-03T13:52:00 creation FRE-330-715-368-00032-ifr_etopo1_bedrock_mnt Modèle Numérique de Terrain ETOPO1 bedrock, qui intègre des données de topographie, de bathymétrie, de trait de côte et de substrat rocheux sous les calottes glaciaires. La résolution de ce modèle du relief global de la Terre est de une minute d'arc. National Oceanic and Atmospheric Administration (USA) onGoing NOAA National Geophysical Data Center National Centers for Environmental Information (NCEI) (828) 271-4800 E/NE42 325 Broadway E/NE42 325 Broadway Boulder Colorado 80305 United States United States ncei.info@noaa.gov author https://sextant.ifremer.fr/geonetwork/srv/api/records/2ba54b4c-f242-4337-b8b6-92e77978700e/attachments/etopo.png /Milieu physique/Bathymétrie/MNT /Milieu physique/Bathymétrie/MNT /Physical Environment/Bathymetry/Digital Terrain Model Thèmes Sextant Thèmes Sextant 2025-12-09 publication geonetwork.thesaurus.local.theme.sextant-theme Altitude Altitude Elevation GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2018-07-27T14:39:48 publication 2018-07-27 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Data Data Data Mission Atlantic - Resources Mission Atlantic - Resources 2025-12-09 publication geonetwork.thesaurus.local.theme.mission-atlantic-resources /Marine geology/Gravity, magnetics and bathymetry /Marine geology/Gravity, magnetics and bathymetry /Marine geology/Gravity, magnetics and bathymetry Mission Atlantic - BODC Parameters Mission Atlantic - BODC Parameters 2025-12-09 publication geonetwork.thesaurus.local.theme.mission-atlantic-bodc-parameters Spatial data products Spatial data products Spatial data products Mission Atlantic - Data type (DMP) Mission Atlantic - Data type (DMP) 2025-12-09 publication geonetwork.thesaurus.local.theme.mission-atlantic-data-type WP6 Dynamics of ecosystem state and resources WP6 Dynamics of ecosystem state and resources WP6 Dynamics of ecosystem state and resources Mission Atlantic - Work Package Mission Atlantic - Work Package 2025-12-09 publication geonetwork.thesaurus.local.theme.mission-atlantic-work-package Atlantic Ocean Atlantic Ocean Atlantic Ocean Mission Atlantic - Case Studies Mission Atlantic - Case Studies 2025-12-09 publication geonetwork.thesaurus.local.theme.mission-atlantic-case-studies Bathymétrie Bathymétrie Bathymetry ODATIS aggregation parameters and Essential Variable names ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 Données de simulation Données de simulation Simulation data Type de jeux de donnée ODATIS Type de jeux de donnée ODATIS 2025-12-09 publication geonetwork.thesaurus.local.theme.type_jeux_donnee grid utf8 oceans -180.00 180.00 -90.00 90.00 1940-01-01 2008-01-01 grid grid Administrateur du serveur Sextant Ifremer - Centre de Brest Dépositaire mandaté pour les données numériques sextant@ifremer.fr distributor https://sextant.ifremer.fr/services/wms/wms1? https://sextant.ifremer.fr/services/wms/wms1? OGC:WMS ETOPO1_R MNT ETOPO1 MNT ETOPO1 https://www.ngdc.noaa.gov/mgg/global/ https://www.ngdc.noaa.gov/mgg/global/ WWW:LINK ETOPO1 Global Relief Model doi:10.7289/V5C8276M doi:10.7289/V5C8276M DOI - 2008-06-17T00:00:00 - All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS 84 and sea level, respectively, using FME. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection. - 2008-06-25T00:00:00 - Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency. - 2008-06-30T00:00:00 - Coastline datasets were adjusted to fit satellite imagery. - 2008-07-10T00:00:00 - xyz files of the Measured and Estimated Seafloor Topography data (between -500 m and 0 m) were surfaced using GMT's 'surface' tool onto a 1 arc-minute cell size grid that interpolated to fill empty cells. Points extracted along the GSHHS coastline were also included, at -1 m elevation, to force bathymetric interpolation into the coastal zone. The resulting Arc ASCII grid was clipped to the coastline and the -120 m contour to remove values over land and non-coastal waters. - 2008-07-18T00:00:00 - xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to the NSIDC Antarctica RAMP topography dataset. Least weight was given to the global datasets and the interpolated bathymetric surface. Gridding was performed in 16 regional tiles, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final global relief model. - 2008-07-31T00:00:00 - ETOPO1 was bult as a global, grid-registered, 1 arc-minute grid that spans from pole to pole and from -180 degrees to 180 degrees in longitude. It is 21601 cells by 10801 cells in dimension, with multiple duplicate cells sitting atop the North and South poles and on the -180 degrees and 180 degrees longitude line. A cell-registered version (21600 by 10800 cells) was created from the grid-registered version by resampling, using GMT's 'grdsample' tool. This resampling introduces some flattening of relief, due to averaging of four grid-registered cell vlaues to produce one cell-registered value. Both types are global, though the grid-registered version should be considered the authoritative version. The cell-registered version may be more appropriate for creating maps and images.