A method for measuring surface and subsurface ocean currents from aircraft is described. Comparisons of measurements using this technique with those obtained from a ship are given and applications are discussed.
Richardson, William S., Henry J. White, and Laszlo Nemeth. 1972. "A technique for the direct measurements of ocean currents from aircraft." Journal of Marine Research 30, (2). https://elischolar.library.yale.edu/journal_of_marine_research/1242