Quantitative agreement between geostrophic computations and direct measurements of current and transport in the Straits of Florida, and elsewhere as well, is found only when observations are made under synoptic conditions. Under other conditions, geostrophic computations often show a multiaxial structure (i.e., bands of current) not found with direct measurements; this apparent multiaxial structure could be caused largely by periodic disturbances related to the tides....
Broida, Saul. 1969. "Geostrophy and direct measurements in the Straits of Florida." Journal of Marine Research 27, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1159