O GTOPO30 é um modelo digital de elevação (MDE) global com um espaçamento horizontal de grade de 30 segundos de arco (aproximadamente 1 quilômetro).
O DEM foi derivado de várias fontes raster e vetoriais de informações topográficas. Concluído no final de 1996, o GTOPO30 foi desenvolvido ao longo de um período de três anos por meio de um esforço colaborativo liderado pelo Centro de Observação e Ciência de Recursos da Terra (EROS, na sigla em inglês) do Serviço Geológico dos EUA. As seguintes organizações participaram contribuindo com financiamento ou dados de origem: a Administração Nacional de Aeronáutica e Espaço (NASA), o Programa das Nações Unidas para o Meio Ambiente/Banco de Dados de Informações sobre Recursos Globais (PNUMA/GRID), a Agência dos Estados Unidos para o Desenvolvimento Internacional (USAID), o Instituto Nacional de Estatística e Geografia (INEGI) do México, o Instituto de Pesquisa Geográfica (GSI) do Japão, a Manaaki Whenua Landcare Research da Nova Zelândia e o Comitê Científico de Pesquisa Antártica (SCAR).
Bandas
Bandas
Nome
Unidades
Mín.
Máx.
Tamanho do pixel
Descrição
elevation
m
-407*
8752*
927,67 metros
Elevação
* valor mínimo ou máximo estimado
Termos de Uso
Termos de Uso
Não há restrições de uso dos dados recebidos do Centro de Observação e Ciência de Recursos da Terra (EROS, na sigla em inglês) do Serviço Geológico dos EUA. Para mais informações, acesse a página Uso e citação de dados do USGS.
O GTOPO30 é um modelo digital global de elevação (DEM, na sigla em inglês) com um espaçamento de grade horizontal de 30 segundos de arco (aproximadamente 1 quilômetro). O DEM foi derivado de várias fontes raster e vetoriais de informações topográficas. Concluído no final de 1996, o GTOPO30 foi desenvolvido ao longo de três anos por um esforço colaborativo liderado por …
[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)"]]
