Присутствие рыболовных судов, измеряемое в часах на квадратный километр. Каждый актив представляет собой присутствие судна для данного государства флага и дня, с одной полосой для присутствия каждого типа орудий лова.
Присутствие рыболовных судов, измеряемое в часах на квадратный километр. Каждый актив представляет собой присутствие судна для заданного государства флага и дня, с одной полосой для каждого типа орудий лова. См. примеры скриптов Earth Engine. Также см. основной сайт GFW для получения информации о программе, полностью интерактивных карт визуализации и т. д.
[null,null,[],[[["\u003cp\u003eThe GFW/GFF/V1/vessel_hours dataset provides data on fishing vessel presence, measured in hours per square kilometer, from 2012 to 2017.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset includes information on various fishing gear types, such as drifting longlines, fixed gear, purse seines, and trawlers, allowing for analysis of different fishing practices.\u003c/p\u003e\n"],["\u003cp\u003eDeveloped by Global Fishing Watch, the dataset is available through Google Earth Engine and is licensed under a Creative Commons Attribution-ShareAlike 4.0 International license (CC-BY-SA).\u003c/p\u003e\n"],["\u003cp\u003eUsers can explore the data further using sample Earth Engine scripts and access interactive visualizations and program information on the Global Fishing Watch website.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is provided at a resolution of 1113.2 meters and includes image properties like the country (vessel flag state) for each asset.\u003c/p\u003e\n"]]],["The dataset from Global Fishing Watch (GFW) provides daily fishing vessel presence data from 2012 to 2017, measured in hours per square kilometer. Data is broken down by flag state and day, including bands for various gear types like drifting longlines, fixed gear, purse seines, squid jiggers, and trawlers. The pixel size is 1113.2 meters. Users can access and analyze the data via Earth Engine, with example scripts available for exploration. The dataset is licensed under CC-BY-SA 4.0.\n"],null,["# GFW (Global Fishing Watch) Daily Vessel Hours\n\nDataset Availability\n: 2012-01-01T00:00:00Z--2017-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [Global Fishing Watch](https://globalfishingwatch.org/)\n\nCadence\n: 1 Day\n\nTags\n:\n[fishing](/earth-engine/datasets/tags/fishing) [gfw](/earth-engine/datasets/tags/gfw) [marine](/earth-engine/datasets/tags/marine) [monthly](/earth-engine/datasets/tags/monthly) [ocean](/earth-engine/datasets/tags/ocean) [oceans](/earth-engine/datasets/tags/oceans) \n\n#### Description\n\nFishing vessel presence, measured in hours per square km. Each asset\nis the vessel presence for a given flag state and day, with one band for the\npresence of each gear type.\n\nSee [sample Earth Engine\nscripts](https://globalfishingwatch.org/research/global-footprint-of-fisheries/).\nAlso see [the main GFW site](https://GlobalFishingWatch.org) for program\ninformation, fully interactive visualization maps, and impacts.\n\n### Bands\n\n\n**Pixel Size**\n\n1113.2 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|----------------------|---------|------------|----------------------------------------------------------------------|\n| `drifting_longlines` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with drifting longlines. |\n| `fixed_gear` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with fixed gear. |\n| `other_fishing` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with other gear types. |\n| `purse_seines` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with purse seines. |\n| `squid_jigger` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with squid jiggers. |\n| `trawlers` | h/km\\^2 | meters | Hours per sq. km of fishing vessel presence with trawlers. |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|---------|--------|---------------------------------------------------------------------------|\n| country | STRING | ISO3 country code of the vessel flag state. For all countries, use \"WLD\". |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis work is licensed under a Creative Commons Attribution-ShareAlike 4.0\nInternational license. (CC-BY-SA)\n\n### Citations\n\nCitations:\n\n- Global Fishing Watch, \"Tracking the Global Footprint of Fisheries.\" Science 361.6378 (2018).\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('GFW/GFF/V1/vessel_hours')\n .filter(ee.Filter.date('2016-12-01', '2017-01-01'));\nvar trawlers = dataset.select('trawlers');\nvar trawlersVis = {\n min: 0.0,\n max: 5.0,\n};\nMap.setCenter(130.61, 34.287, 8);\nMap.addLayer(trawlers.max(), trawlersVis, 'Trawlers');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/GFW/GFW_GFF_V1_vessel_hours) \n[GFW (Global Fishing Watch) Daily Vessel Hours](/earth-engine/datasets/catalog/GFW_GFF_V1_vessel_hours) \nFishing vessel presence, measured in hours per square km. Each asset is the vessel presence for a given flag state and day, with one band for the presence of each gear type. See sample Earth Engine scripts. Also see the main GFW site for program information, fully interactive visualization maps, ... \nGFW/GFF/V1/vessel_hours, fishing,gfw,marine,monthly,ocean,oceans \n2012-01-01T00:00:00Z/2017-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://globalfishingwatch.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/GFW_GFF_V1_vessel_hours)"]]
