AI-generated Key Takeaways
-
The GFW/GFF/V1/vessel_hours dataset provides data on fishing vessel presence, measured in hours per square kilometer, from 2012 to 2017.
-
This 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.
-
Developed 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).
-
Users can explore the data further using sample Earth Engine scripts and access interactive visualizations and program information on the Global Fishing Watch website.
-
The dataset is provided at a resolution of 1113.2 meters and includes image properties like the country (vessel flag state) for each asset.
- Dataset Availability
- 2012-01-01T00:00:00Z–2017-01-01T00:00:00Z
- Dataset Provider
- Global Fishing Watch
- Cadence
- 1 Day
- Tags
Description
Fishing 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, and impacts.
Bands
Pixel Size
1113.2 meters
Bands
| Name | Units | Pixel Size | Description |
|---|---|---|---|
drifting_longlines |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with drifting longlines. |
fixed_gear |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with fixed gear. |
other_fishing |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with other gear types. |
purse_seines |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with purse seines. |
squid_jigger |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with squid jiggers. |
trawlers |
h/km^2 | meters | Hours per sq. km of fishing vessel presence with trawlers. |
Image Properties
Image Properties
| Name | Type | Description |
|---|---|---|
| country | STRING | ISO3 country code of the vessel flag state. For all countries, use "WLD". |
Terms of Use
Terms of Use
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International license. (CC-BY-SA)
Citations
Global Fishing Watch, "Tracking the Global Footprint of Fisheries." Science 361.6378 (2018).
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee.ImageCollection('GFW/GFF/V1/vessel_hours') .filter(ee.Filter.date('2016-12-01', '2017-01-01')); var trawlers = dataset.select('trawlers'); var trawlersVis = { min: 0.0, max: 5.0, }; Map.setCenter(130.61, 34.287, 8); Map.addLayer(trawlers.max(), trawlersVis, 'Trawlers');