The circulation in the upper mixed layer in the equatorial region of the North Pacific is treated by solving the steady-state equations containing terms of Corioli's force, pressure gradient, and horizontal as well as vertical mixing….
Yoshida, Kozo, Han-lee Mao, and Paul L. Horrer. 1953. "Circulation in the upper mixed layer of the equatorial North Pacific." Journal of Marine Research 12, (1). https://elischolar.library.yale.edu/journal_of_marine_research/786