For periods between about two days and one month the surface flow through the Strait of Belle Isle, represented by the sea level difference across it, is highly coherent with the large scale atmospheric pressure gradient normal to the strait. This suggests that the flow is driven by a sea level difference between opposite ends of the strait induced by large scale winds....
Garrett, Christopher, and Bechara Toulany. 1981. "Variability of the flow through the Strait of Belle Isle." Journal of Marine Research 39, (1). https://elischolar.library.yale.edu/journal_of_marine_research/1538