In a previous paper (Montgomery, 1938, p. 177) it was suggested that fluctuations in the drop in sea level from Key West to Miami might indicate fluctuations in strength of the Florida Current. Both stations are located on the left side of the Straits of Florida, Key West near the entrance and Miami 130 nautical miles down the shore at the most constricted section, where it is supposed that the Florida Current runs swiftest....
Montgomery, R. B.. 1941. "Sea level difference between Key West and Miami, Florida." Journal of Marine Research 4, (1). https://elischolar.library.yale.edu/journal_of_marine_research/580