University of Miami has a fascinating web site dedicated to ocean currents.
Image right “The distribution of salinity on the four degree (Centigrade) potential temperature surface illustrates the Mediterranean salt tongue. High salinity water, formed by evaporation in the Mediterranean Sea, spills over the sill at Gibraltar, mixes with North Atlantic water, and spreads out thousand km across the basin.”
A refreshing feature is plenty of places which admit we don’t know.
View original post 198 more words