Using published values of the kinetic energy per unit mass of fluctuating motions for the deep western North Atlantic an estimate is made of the energy dissipation rate from fluctuations by bottom friction for the Gulf Stream System. It appears that bottom friction may account for all the energy input by the wind, and that this dissipation occurs in only about 20% of the areal extent of this gyre.
Weatherly, Georges L.. 1984. "An estimate of bottom frictional dissipation by Gulf Stream fluctuations." Journal of Marine Research 42, (2). https://elischolar.library.yale.edu/journal_of_marine_research/1720