GTOPO30은 수평 그리드 간격이 30초 (약 1km)인 전 세계 디지털 고도 모델 (DEM)입니다.
DEM은 지형 정보의 여러 래스터 및 벡터 소스에서 파생되었습니다. 1996년 말에 완료된 GTOPO30은 미국 지질 조사국의 지구 자원 관측 및 과학 센터 (EROS)가 주도한 공동 노력으로 3년에 걸쳐 개발되었습니다. 다음 기관은 자금 또는 소스 데이터를 제공하여 참여했습니다. 미국 항공우주국(NASA), 유엔 환경 계획/글로벌 자원 정보 데이터베이스 (UNEP/GRID), 미국 국제개발처 (USAID), 멕시코 국립 통계 지리 정보 연구소 (INEGI), 일본 지리 조사 연구소 (GSI), 뉴질랜드 Manaaki Whenua Landcare Research, 남극 연구 과학 위원회 (SCAR)
대역
대역
이름
단위
최소
최대
픽셀 크기
설명
elevation
m
-407*
8752*
927.67미터
고도
* 예상 최솟값 또는 최댓값
이용약관
이용약관
미국 지질조사국의 지구 자원 관측 및 과학 (EROS) 센터에서 수신한 데이터 사용에는 제한이 없습니다. 자세한 내용은 USGS의 데이터 사용 및 인용 페이지를 참고하세요.
[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)"]]
