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Tracking: seal tracks with SST and wind data
Eonfusion has been used to generate seal tracks by fusing time-depth tag data with GPS positional data. The fusion operation combines the data using a common time attribute, allowing interpolation of the seal's position while it is diving.
The resulting tracks can be visualized at any scale, from small highly-localised movements to ocean scale migration behaviour. The visibility time window can be moved and flexibly widened or narrowed. Tracks can be coloured by any track attribute, such as the seal ID or the water temperature at the seal's position.
The tracks are visualised in a scene that includes bathymetry, sea surface temperature and weather information. The behaviour of seals in response to temperature patterns and weather events can be observed by simply moving the time window and observing the changes in each of the combined data sets.
Myriax warmly thanks Mary-Anne Lea and Tom Gelatt, National Marine Mammal Laboratory, NOAA-AFSC, Seattle, WA, USA.
Click here to read a more detailed description of this application in our December 2008 Biologging newsletter.
