A History of Thermocline Theory
151
We three kings of Geostrophy are
Tracing streamlines that traverse afar,
The wind-driven gyre (but not quite entire),
Following yonder isobar.
(Chorus)
Oh, Oh, isobar of ideal lubricity
(Joe)
Isobar of potential vorticity
(Jim)
Westward swerving, still conserving (All)
Guide us to beta-helicity
(Hank)
(All repeat).
REFERENCES
Charney, J. G., 1955. The Gulf Stream as an inertial boundary layer. Proc. Natl. Acad. Sci. USA 41,
731–740.
Defant, A., 1961. Physical Oceanography, Vol. 1. Pergamon Press, Oxford. 729.
Dewar, W. K., R. M. Samelson, and G. K. Vallis, 2005. The ventilated pool: A model of subtropical mode
water. J. Phys. Oceanogr.35, 137–150.