Fall flow reversals at Intermediate Waters in the Lanzarote Passage from nine-year record

Abstract

Two 9-yr current-meter and salinity records, together with climatological data, reveal marked seasonal variability of the intermediate flow at a key location in the Canary Basin. The region is characterized by a summer (July–September) and early fall (October) northward progression of Antarctic Intermediate Water followed by a fall (November–December) intense flow reversal of Mediterranean Water. A Sverdrup-type model confirms that these movements are associated with stretching or shrinking of the intermediate water strata.