High Frequency Motion
The inertial period is about 12.99 hours.
A simple model consisting of a mean current plus
an inertial component was fit in a least-squares
sense to the drifter position data.
One elliptical drifter track had a major axis of 16.8
cm/s and a minor axis of 10.5 cm/s, with the major
axis oriented toward 28 ON.