이 데이터 세트에는 1984년부터 2021년까지의 지표수의 위치 및 시간 분포 지도가 포함되어 있으며 이러한 수면의 범위와 변화에 관한 통계를 제공합니다.
자세한 내용은 관련 학술지 논문인 전 세계 지표수 및 장기 변화의 고해상도 매핑(Nature, 2016) 및 온라인 데이터 사용자 가이드를 참고하세요.
이 데이터는 1984년 3월 16일과 2021년 12월 31일 사이에 획득한 Landsat 5,7,8의 장면 4, 716, 475개를 사용하여 생성되었습니다.
각 픽셀은 전문가 시스템을 사용하여 물 / 물 아님으로 개별적으로 분류되었으며, 결과는 전체 기간과 변화 감지를 위한 두 시대 (1984~1999년, 2000~2021년)에 대한 월별 기록으로 정리되었습니다.
이 연간 시즌성 분류 컬렉션에는 연중 감지된 발생 값을 기반으로 한 물의 시즌성의 연도별 분류가 포함됩니다.
대역
픽셀 크기 30미터
대역
이름
픽셀 크기
설명
waterClass
미터
연중 물의 계절성 분류입니다.
waterClass 클래스 표
값
색상
설명
0
#cccccc
데이터 없음
1
#ffffff
물 아님
2
#99d9ea
계절별 물
3
#0000ff
영구적인 물
이미지 속성
이미지 속성
이름
유형
설명
년
DOUBLE
연도
이용약관
이용약관
여기에 있는 모든 데이터는 Copernicus 프로그램에 따라 생성되며 사용 제한 없이 무료로 제공됩니다. 전체 라이선스 정보는 코페르니쿠스 규정을 참고하세요.
이러한 데이터 세트를 사용하는 간행물, 모델, 데이터 제품에는 다음 인용과 같이 데이터 세트와 학술지 논문을 인용하는 등 적절한 출처 표시가 포함되어야 합니다.
데이터를 게시된 지도의 레이어로 사용하는 경우 '출처: EC JRC/Google'이라는 저작자 표시 텍스트를 포함하세요.
인용
인용:
Jean-Francois Pekel, Andrew Cottam, Noel Gorelick, Alan S. Belward,
High-resolution mapping of global surface water and its long-term changes.
Nature 540, 418~422 (2016). (doi:10.1038/nature20584)
이 데이터 세트에는 1984년부터 2021년까지의 지표수의 위치 및 시간 분포 지도가 포함되어 있으며 이러한 수면의 범위와 변화에 관한 통계가 제공됩니다. 자세한 내용은 관련 학술지 논문인 High-resolution mapping of global surface water and its long-term changes (Nature, 2016) 및 …을 참고하세요.
[null,null,[],[[["\u003cp\u003eThe JRC Yearly Water Classification History dataset provides yearly maps of surface water from 1984 to 2021, including the seasonality of water.\u003c/p\u003e\n"],["\u003cp\u003eIt's based on Landsat 5, 7, and 8 imagery and classifies each pixel as water or non-water, offering insights into the extent and change of surface water over time.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset has a 30-meter resolution and includes a 'waterClass' band to indicate permanent, seasonal, or no water.\u003c/p\u003e\n"],["\u003cp\u003eIt's freely available for use with proper attribution to EC JRC/Google and citation of the associated journal article.\u003c/p\u003e\n"],["\u003cp\u003eUsers can explore and analyze the dataset using Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# JRC Yearly Water Classification History, v1.4\n\nDataset Availability\n: 1984-03-16T00:00:00Z--2022-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [EC JRC / Google](https://global-surface-water.appspot.com)\n\nCadence\n: 1 Year\n\nTags\n:\n[annual](/earth-engine/datasets/tags/annual) [geophysical](/earth-engine/datasets/tags/geophysical) [google](/earth-engine/datasets/tags/google) [history](/earth-engine/datasets/tags/history) [jrc](/earth-engine/datasets/tags/jrc) [landsat-derived](/earth-engine/datasets/tags/landsat-derived) [surface](/earth-engine/datasets/tags/surface) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [water](/earth-engine/datasets/tags/water) [yearly](/earth-engine/datasets/tags/yearly) \n\n#### Description\n\nThis dataset contains maps of the location and temporal\ndistribution of surface water from 1984 to 2021 and provides\nstatistics on the extent and change of those water surfaces.\nFor more information see the associated journal article: [High-resolution\nmapping of global surface water and its long-term changes](https://www.nature.com/nature/journal/v540/n7633/full/nature20584.html)\n(Nature, 2016) and the online\n[Data Users Guide](https://storage.googleapis.com/global-surface-water/downloads_ancillary/DataUsersGuidev2021.pdf).\n\nThese data were generated using 4,716,475 scenes from Landsat\n5, 7, and 8 acquired between 16 March 1984 and 31 December 2021.\nEach pixel was individually classified into water / non-water\nusing an expert system and the results were collated into a monthly\nhistory for the entire time period and two epochs (1984-1999,\n2000-2021) for change detection.\n\nThis Yearly Seasonality Classification collection contains a year-by-year\nclassification of the seasonality of water based on the occurrence values\ndetected throughout the year.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|--------------|------------|-----------------------------------------------------------------|\n| `waterClass` | meters | Classification of the seasonality of water throughout the year. |\n\n**waterClass Class Table**\n\n| Value | Color | Description |\n|-------|---------|-----------------|\n| 0 | #cccccc | No data |\n| 1 | #ffffff | Not water |\n| 2 | #99d9ea | Seasonal water |\n| 3 | #0000ff | Permanent water |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|------|--------|-------------|\n| year | DOUBLE | Year |\n\n### Terms of Use\n\n**Terms of Use**\n\nAll data here is produced under the Copernicus Programme and is provided\nfree of charge, without restriction of use. For the full license\ninformation see the Copernicus Regulation.\n\nPublications, models, and data products that make use of these datasets\nmust include proper acknowledgement, including citing datasets and the\njournal article as in the following citation.\n\nIf you are using the data as a layer in a published map, please include the\nfollowing attribution text: 'Source: EC JRC/Google'\n\n### Citations\n\nCitations:\n\n- Jean-Francois Pekel, Andrew Cottam, Noel Gorelick, Alan S. Belward,\n High-resolution mapping of global surface water and its long-term changes.\n Nature 540, 418-422 (2016). ([doi:10.1038/nature20584](https://doi.org/10.1038/nature20584))\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.ImageCollection('JRC/GSW1_4/YearlyHistory');\n\nvar visualization = {\n bands: ['waterClass'],\n min: 0.0,\n max: 3.0,\n palette: ['cccccc', 'ffffff', '99d9ea', '0000ff']\n};\n\nMap.setCenter(59.414, 45.182, 7);\n\nMap.addLayer(dataset, visualization, 'Water Class');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/JRC/JRC_GSW1_4_YearlyHistory) \n[JRC Yearly Water Classification History, v1.4](/earth-engine/datasets/catalog/JRC_GSW1_4_YearlyHistory) \nThis dataset contains maps of the location and temporal distribution of surface water from 1984 to 2021 and provides statistics on the extent and change of those water surfaces. For more information see the associated journal article: High-resolution mapping of global surface water and its long-term changes (Nature, 2016) and ... \nJRC/GSW1_4/YearlyHistory, annual,geophysical,google,history,jrc,landsat-derived,surface,surface-ground-water,water,yearly \n1984-03-16T00:00:00Z/2022-01-01T00:00:00Z \n-59 -180 78 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://global-surface-water.appspot.com)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/JRC_GSW1_4_YearlyHistory)"]]
