Ripple Marks Show That Countercurrent Exists in Florida Straits

Science  15 Feb 1963:
Vol. 139, Issue 3555, pp. 603-605
DOI: 10.1126/science.139.3555.603


About 60 percent of the area shown in photographs taken at the axis of Florida Straits exhibits well-defined current ripple marks. These ripples indicate a flow of water of at least 0.2 to 0.6 knots from the north. This current is in the opposite direction from the surface currents of 2 to 4 or more knots.