HydroSHEDS는 일관된 형식으로 지역 및 전역 규모 애플리케이션에 수문학 정보를 제공하는 매핑 제품입니다. 하천 네트워크, 유역 경계, 배수 방향, 흐름 누적 등 다양한 규모의 지리 참조 데이터 세트 (벡터 및 래스터)를 제공합니다. HydroSHEDS는 2000년에 NASA의 셔틀 레이더 지형 임무 (SRTM)에서 획득한 고도 데이터를 기반으로 합니다.
이 빈 공간이 채워진 고도 데이터 세트는 조건화된 DEM 데이터 세트를 생성하기 위한 첫 번째 단계입니다. SRTM 데이터에서 스파이크와 웰이 감지되어 무효화되었습니다. 작은 공백은 주변 고도의 보간으로 채워졌습니다. 바다는 고도 0m로 설정되었고 호수, 섬, 강은 다른 기법을 사용하여 채워졌습니다. 기본 디지털 고도 모델에 관한 자세한 내용은 HydroSHEDS 웹사이트와 문서에서 확인할 수 있습니다.
이 데이터 세트는 3초 해상도입니다. 3초에서 사용할 수 있는 데이터 세트는 빈 공간이 채워진 DEM, 수문학적으로 조건화된 DEM, 배수 (흐름) 방향입니다.
기본 SRTM 고도 데이터를 사용할 수 없어 더 조잡한 해상도의 DEM (USGS에서 제공한 HYDRO1k)이 사용되었기 때문에 북위 60도 이상의 지역에서는 HydroSHEDS 데이터의 품질이 크게 낮습니다.
HydroSHEDS는 세계자연기금 (WWF) 보존 과학 프로그램이 미국 지질조사국, 국제 열대 농업 센터, 네이처 컨서번시, 독일 카셀 대학교 환경 시스템 연구 센터와 협력하여 개발했습니다.
대역
픽셀 크기 92.77미터
대역
이름
단위
최소
최대
픽셀 크기
설명
b1
m
-424*
8642*
미터
고도
* 예상 최솟값 또는 최댓값
이용약관
이용약관
HydroSHEDS 데이터는 비상업적 및 상업적 용도로 무료로 사용할 수 있습니다. 자세한 내용은 라이선스 계약을 참고하세요.
인용
인용:
Lehner, B., Verdin, K., Jarvis, A. (2008): New global hydrography
derived from spaceborne elevation data. Eos, Transactions, AGU,
89(10): 93-94.
HydroSHEDS는 지역 및 전 세계 규모 애플리케이션에 수문학 정보를 일관된 형식으로 제공하는 매핑 제품입니다. 하천 네트워크, 유역 경계, 배수 방향, 흐름 누적 등 다양한 규모의 지리 참조 데이터 세트 (벡터 및 래스터)를 제공합니다. HydroSHEDS는 2000년에 획득한 고도 데이터를 기반으로 합니다.
[null,null,[],[[["\u003cp\u003eHydroSHEDS provides hydrographic information like river networks, watershed boundaries, and drainage directions at various scales.\u003c/p\u003e\n"],["\u003cp\u003eIt is a void-filled elevation dataset based on SRTM data from 2000 with a resolution of 3 arc-seconds (approximately 92.77 meters).\u003c/p\u003e\n"],["\u003cp\u003eData quality is lower above 60 degrees northern latitude due to the lack of underlying SRTM data.\u003c/p\u003e\n"],["\u003cp\u003eHydroSHEDS is free for non-commercial and commercial use under the specified license agreement.\u003c/p\u003e\n"],["\u003cp\u003eDeveloped by WWF in partnership with USGS and other organizations.\u003c/p\u003e\n"]]],["The HydroSHEDS dataset, provided by WWF, offers hydrographic data derived from NASA's 2000 SRTM elevation data. It includes void-filled DEM, Hydrologically Conditioned DEM, and Drainage (Flow) Direction at a 3 arc-second resolution. The data provides consistent geo-referenced datasets, including river networks, watershed boundaries, and flow accumulations. It's accessible through Google Earth Engine, and usable for commercial and non-commercial projects, but quality decreases above 60 degrees northern latitude.\n"],null,["# WWF HydroSHEDS Void-Filled DEM, 3 Arc-Seconds\n\nDataset Availability\n: 2000-02-11T00:00:00Z--2000-02-22T00:00:00Z\n\nDataset Provider\n:\n\n\n [WWF](https://www.hydrosheds.org/)\n\nTags\n:\n [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [geophysical](/earth-engine/datasets/tags/geophysical) [hydrography](/earth-engine/datasets/tags/hydrography) [hydrology](/earth-engine/datasets/tags/hydrology) [hydrosheds](/earth-engine/datasets/tags/hydrosheds) [srtm](/earth-engine/datasets/tags/srtm) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [topography](/earth-engine/datasets/tags/topography) [water](/earth-engine/datasets/tags/water) [wwf](/earth-engine/datasets/tags/wwf) \nvoid-filled \n\n#### Description\n\nHydroSHEDS is a mapping product that provides hydrographic\ninformation for regional and global-scale applications in a consistent\nformat. It offers a suite of geo-referenced datasets (vector and\nraster) at various scales, including river networks, watershed\nboundaries, drainage directions, and flow accumulations. HydroSHEDS\nis based on elevation data obtained in 2000 by NASA's Shuttle Radar\nTopography Mission (SRTM).\n\nThis void-filled elevation dataset is the first step\ntowards producing the conditioned DEM datasets. Spikes and wells\nin the SRTM data were detected and voided out. Small voids were\nfilled by interpolation of surrounding elevations. The ocean\nwas set to an elevation of 0 meters, and lakes, islands, and\nrivers were filled using other techniques. Full details of the\nunderlying digital elevation model are available in the HydroSHEDS\nwebsite and documentation.\n\nThis dataset is at 3 arc-second\nresolution. The datasets available at 3 arc-seconds are the Void-Filled\nDEM, Hydrologically Conditioned DEM, and Drainage (Flow) Direction.\n\nNote that the quality of the HydroSHEDS data is significantly lower for regions above\n60 degrees northern latitude as there is no underlying SRTM elevation data available\nand thus a coarser-resolution DEM was (HYDRO1k provided by USGS).\n\nHydroSHEDS was developed by the World Wildlife Fund (WWF)\nConservation Science Program in partnership with the U.S. Geological\nSurvey, the International Centre for Tropical Agriculture, The\nNature Conservancy, and the Center for Environmental Systems Research\nof the University of Kassel, Germany.\n\n### Bands\n\n\n**Pixel Size**\n\n92.77 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|------|-------|--------|--------|------------|-------------|\n| `b1` | m | -424\\* | 8642\\* | meters | Elevation |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\nHydroSHEDS data are free for non-commercial and commercial\nuse. For more information, please refer to the [License Agreement](https://www.hydrosheds.org/page/license).\n\n### Citations\n\nCitations:\n\n- Lehner, B., Verdin, K., Jarvis, A. (2008): New global hydrography\n derived from spaceborne elevation data. Eos, Transactions, AGU,\n 89(10): 93-94.\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('WWF/HydroSHEDS/03VFDEM');\nvar elevation = dataset.select('b1');\nvar elevationVis = {\n min: -50.0,\n max: 3000.0,\n gamma: 2.0,\n};\nMap.setCenter(-121.652, 38.022, 8);\nMap.addLayer(elevation, elevationVis, 'Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/WWF/WWF_HydroSHEDS_03VFDEM) \n[WWF HydroSHEDS Void-Filled DEM, 3 Arc-Seconds](/earth-engine/datasets/catalog/WWF_HydroSHEDS_03VFDEM) \nHydroSHEDS is a mapping product that provides hydrographic information for regional and global-scale applications in a consistent format. It offers a suite of geo-referenced datasets (vector and raster) at various scales, including river networks, watershed boundaries, drainage directions, and flow accumulations. HydroSHEDS is based on elevation data obtained in 2000 ... \nWWF/HydroSHEDS/03VFDEM, dem,elevation,geophysical,hydrography,hydrology,hydrosheds,srtm,surface-ground-water,topography,water,wwf \n2000-02-11T00:00:00Z/2000-02-22T00:00:00Z \n-67.3 -180 60 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.hydrosheds.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/WWF_HydroSHEDS_03VFDEM)"]]
