セル値は水深（メートル単位）を示します。この地図は、人口と経済資産が河川の洪水にさらされるリスクを評価し、洪水リスクの評価を行うために使用できます。このデータセットは、Copernicus Emergency Management Service の一部として作成されています。
このバージョンには、追加のデータセットも含まれています。タイルごとに、GloFAS の「Flood hazard 100 year return period」静的レイヤに従って水深が分類された洪水ハザードマップを利用できます。また、「spurious_depth_category」バンドは、10 年間の再現期間で、2 km のバッファを含む小さな水路（3,000 km^2 未満）で 10 m を超える水深が予測されるエリアを特定します。
Baugh、Calum、Colonese、Juan、D'Angelo、Claudia、Dottori、Francesco、Neal、Jeffrey、Prudhomme、Christel、Salamon、Peter（2024 年）: Global river flood hazard maps（世界の河川洪水ハザードマップ）。欧州委員会、共同研究センター（JRC）
[データセット] PID:
http://data.europa.eu/89h/jrc-floods-floodmapgl_rp50y-tif
[null,null,[],[],[],null,["Dataset Availability\n: 2024-03-16T00:00:00Z--2024-03-16T23:59:59Z\n\nDataset Provider\n:\n\n\n [Joint Research Centre](https://data.jrc.ec.europa.eu/dataset/jrc-floods-floodmapgl_rp50y-tif)\n\nTags\n:\n[flood](/earth-engine/datasets/tags/flood) [monitoring](/earth-engine/datasets/tags/monitoring) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [wri](/earth-engine/datasets/tags/wri) \n\nDescription \nThe global river flood hazard maps are a gridded data set representing\ninundation along the river network, for seven different flood return periods\n(from 1-in-10-years to 1-in-500-years). The input river flow data for the\nnew maps are produced by means of the open-source hydrological model\nLISFLOOD, while inundation simulations are performed with the hydrodynamic\nmodel LISFLOOD-FP. The extent comprises the entire world with the exception\nof Greenland and Antarctica and small islands with river basins smaller than\n500 km\\^2.\n\nCell values indicate water depth (in meters). The maps can be used to assess\nthe exposure of population and economic assets to river floods, and to\nperform flood risk assessments. The dataset is created as part of the\nCopernicus Emergency Management Service.\n\nThis version also includes additional datasets. For each tile, a flood\nhazard map is available with water depth categorized according to the GloFAS\n\"Flood hazard 100 year return period\" static layer. Furthermore, the\n\"spurious_depth_category\" band identifies areas where depths greater than\n10m are predicted in small channels (less than 3,000km\\^2) for the 10-year\nreturn period, including a 2km buffer.\n| **Note:** The band structure has been updated in this version (v2). Each return period now has separate bands for depth and depth category. Additionally, bands for permanent water class and spurious depth category are included.\n\nBands\n\n\n**Pixel Size**\n\n1000 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|---------------------------|-------|-----|-------|------------|-------------------------------------------------------------------------------------------------------------------------------------|\n| `RP10_depth` | m | 0.1 | 160 | meters | Flood inundation depth for return period 10 years |\n| `RP20_depth` | m | 0.1 | 199 | meters | Flood inundation depth for return period 20 years |\n| `RP50_depth` | m | 0.1 | 258.1 | meters | Flood inundation depth for return period 50 years |\n| `RP75_depth` | m | 0.1 | 283.6 | meters | Flood inundation depth for return period 75 years |\n| `RP100_depth` | m | 0.1 | 301.6 | meters | Flood inundation depth for return period 100 years |\n| `RP200_depth` | m | 0.1 | 344.8 | meters | Flood inundation depth for return period 200 years |\n| `RP500_depth` | m | 0.1 | 401.3 | meters | Flood inundation depth for return period 500 years |\n| `RP10_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 10 years |\n| `RP20_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 20 years |\n| `RP50_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 50 years |\n| `RP75_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 75 years |\n| `RP100_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 100 years |\n| `RP200_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 200 years |\n| `RP500_depth_category` | | 2 | 4 | meters | Water depth categorized as the GloFAS Flood hazard 100 year return period static layer for return period 500 years |\n| `permanent_water_class` | | 1 | 1 | meters | Permanent water bodies used to patch the flood hazard maps |\n| `spurious_depth_category` | | 1 | 1 | meters | Identifies areas where depths \\\u003e10m are predicted in small channels (\\\u003c3,000km\\^2) for the 10-year return period, plus a 2km buffer |\n\nImage Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|------|------|---------------------------------------------------------|\n| id | INT | Unique identifier for the latitude/longitude grid cell. |\n\nTerms of Use\n\n**Terms of Use**\n\nThe JRC datasets are available without restriction\non use or distribution. For more information check\n[access rights](https://data.jrc.ec.europa.eu/access-rights/no-limitations),\n\nCitations \nCitations:\n\n- Baugh, Calum; Colonese, Juan; D'Angelo, Claudia; Dottori, Francesco;\n Neal, Jeffrey; Prudhomme, Christel; Salamon, Peter (2024): Global river\n flood hazard maps. European Commission, Joint Research Centre (JRC)\n \\[Dataset\\] PID:\n \u003chttp://data.europa.eu/89h/jrc-floods-floodmapgl_rp50y-tif\u003e\n\nDOIs\n\n- \u003chttps://doi.org/10.1016/j.advwatres.2016.05.002\u003e\n\nExplore with Earth Engine **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\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('JRC/CEMS_GLOFAS/FloodHazard/v2_1');\nvar depth = dataset.select('RP100_depth');\nvar depthVis = {\n min: 0,\n max: 1,\n palette: ['ffffff','0000ff'],\n};\nMap.setCenter(-86.47, 47.28, 4);\nMap.addLayer(depth, depthVis, 'JRC Flood Hazard Maps V2.1');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/JRC/JRC_CEMS_GLOFAS_FloodHazard_v2_1) \n[JRC Global River Flood Hazard Maps Version 2.1](/earth-engine/datasets/catalog/JRC_CEMS_GLOFAS_FloodHazard_v2_1) \nThe global river flood hazard maps are a gridded data set representing inundation along the river network, for seven different flood return periods (from 1-in-10-years to 1-in-500-years). The input river flow data for the new maps are produced by means of the open-source hydrological model LISFLOOD, while inundation simulations are ... \nJRC/CEMS_GLOFAS/FloodHazard/v2_1, flood,monitoring,surface-ground-water,wri \n2024-03-16T00:00:00Z/2024-03-16T23:59:59Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.1016/j.advwatres.2016.05.002](https://doi.org/https://data.jrc.ec.europa.eu/dataset/jrc-floods-floodmapgl_rp50y-tif)\n- [https://doi.org/10.1016/j.advwatres.2016.05.002](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/JRC_CEMS_GLOFAS_FloodHazard_v2_1)"]]
