An oceanographic field exercise was conducted in central Prince William Sound, Alaska, in mid summer 2004 to evaluate the capability of the Prince William Sound Observing System to forecast the trajectories of surface drifting buoys (Cox, 2004). Interestingly, some drifters traced out quasi-polygonal trajectories (Figure 1) that brought to mind shapes created with a Spirograph.

Okkonen, S., and C. Bélanger. 2008. A child’s view of circulation in Prince William Sound, Alaska? Oceanography 21(2):62–65, https://doi.org/10.5670/oceanog.2008.54.

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