GTOPO30 est un modèle numérique d'élévation (MNE) mondial avec un espacement de grille horizontal de 30 secondes d'arc (environ 1 kilomètre).
Le MNT a été créé à partir de plusieurs sources raster et vectorielles d'informations topographiques. Terminée fin 1996, GTOPO30 a été développée sur une période de trois ans grâce à un effort de collaboration mené par le Center for Earth Resources Observation and Science (EROS) de l'U.S. Geological Survey. Les organisations suivantes ont participé en fournissant des fonds ou des données sources : la National Aeronautics and Space Administration (NASA), le Programme des Nations Unies pour l'environnement/Global Resource Information Database (PNUE/GRID), l'Agence des États-Unis pour le développement international (USAID), l'Instituto Nacional de Estadistica Geografica e Informatica (INEGI) du Mexique, le Geographical Survey Institute (GSI) du Japon, Manaaki Whenua Landcare Research de Nouvelle-Zélande et le Scientific Committee on Antarctic Research (SCAR).
Bracelets
Bandes de fréquences
Nom
Unités
Min
Max
Taille des pixels
Description
elevation
m
-407*
8752*
927,67 mètres
Élévation
* valeur minimale ou maximale estimée
Conditions d'utilisation
Conditions d'utilisation
Il n'y a aucune restriction concernant l'utilisation des données reçues du centre EROS (Earth Resources Observation and Science) de l'US Geological Survey. Pour en savoir plus, consultez la page Data Use and Citation de l'USGS.
GTOPO30 est un modèle numérique d'élévation (MNE) mondial avec un espacement de grille horizontal de 30 secondes d'arc (environ 1 kilomètre). Le MNT a été créé à partir de plusieurs sources raster et vectorielles d'informations topographiques. Terminée fin 1996, GTOPO30 a été développée sur une période de trois ans grâce à un effort de collaboration mené par…
[null,null,[],[[["\u003cp\u003eGTOPO30 is a global digital elevation model (DEM) with a 30 arc-second resolution (approximately 1 kilometer).\u003c/p\u003e\n"],["\u003cp\u003eIt was developed by the USGS in collaboration with NASA and other organizations, completed in 1996.\u003c/p\u003e\n"],["\u003cp\u003eGTOPO30 provides elevation data derived from various sources and is freely available for use without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset can be accessed and analyzed using Google Earth Engine.\u003c/p\u003e\n"]]],["The core content details the GTOPO30 dataset, a global digital elevation model (DEM) provided by the U.S. Geological Survey. This dataset, finalized in 1996, offers elevation data with approximately 1-kilometer horizontal grid spacing. It was made available via Earth Engine. The dataset ranges from -407 to 8752 meters in elevation. Users can freely use the data with no restrictions. The Earth Engine code snippet provided enables direct data access and visualization.\n"],null,["# GTOPO30: Global 30 Arc-Second Elevation\n\nDataset Availability\n: 1996-01-01T00:00:00Z--1996-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [United States Geological Survey](https://www.usgs.gov/centers/eros/science/usgs-eros-archive-digital-elevation-global-30-arc-second-elevation-gtopo30)\n\nTags\n:\n [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [geophysical](/earth-engine/datasets/tags/geophysical) [nasa](/earth-engine/datasets/tags/nasa) [topography](/earth-engine/datasets/tags/topography) [usgs](/earth-engine/datasets/tags/usgs) \ngtopo30 \n\n#### Description\n\nGTOPO30 is a global digital elevation model (DEM) with\na horizontal grid spacing of 30 arc seconds (approximately 1 kilometer).\nThe DEM was derived from several raster and vector sources of topographic\ninformation. Completed in late 1996, GTOPO30 was developed over\na three-year period through a collaborative effort led by the U.S.\nGeological Survey''s Center for Earth Resources Observation and\nScience (EROS). The following organizations participated by contributing\nfunding or source data: the National Aeronautics and Space Administration\n(NASA), the United Nations Environment Programme/Global Resource\nInformation Database (UNEP/GRID), the U.S. Agency for International\nDevelopment (USAID), the Instituto Nacional de Estadistica Geografica\ne Informatica (INEGI) of Mexico, the Geographical Survey Institute (GSI)\nof Japan, Manaaki Whenua Landcare Research of New Zealand, and\nthe Scientific Committee on Antarctic Research (SCAR).\n\n### Bands\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-------------|-------|--------|--------|---------------|-------------|\n| `elevation` | m | -407\\* | 8752\\* | 927.67 meters | Elevation |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\nThere are no restrictions on the use of data received\nfrom the U.S. Geological Survey's Earth Resources Observation and\nScience (EROS) Center. For more information, visit the USGS' [Data\nUse and Citation](https://www.usgs.gov/centers/eros/science/usgs-eros-archive-data-use-and-citation) page.\n\n### Citations\n\nCitations:\n\n- GTOPO30 DEM courtesy of the U.S. Geological Survey\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('USGS/GTOPO30');\nvar elevation = dataset.select('elevation');\nvar elevationVis = {\n min: -10.0,\n max: 8000.0,\n gamma: 1.6,\n};\nMap.setCenter(11.69, 43.9, 4);\nMap.addLayer(elevation, elevationVis, 'Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/USGS/USGS_GTOPO30) \n[GTOPO30: Global 30 Arc-Second Elevation](/earth-engine/datasets/catalog/USGS_GTOPO30) \nGTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). The DEM was derived from several raster and vector sources of topographic information. Completed in late 1996, GTOPO30 was developed over a three-year period through a collaborative effort led by ... \nUSGS/GTOPO30, dem,elevation,elevation-topography,geophysical,nasa,topography,usgs \n1996-01-01T00:00:00Z/1996-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.usgs.gov/centers/eros/science/usgs-eros-archive-digital-elevation-global-30-arc-second-elevation-gtopo30)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/USGS_GTOPO30)"]]
