Oceanographic measurements of the West Black Sea: November 26 to December 14, 1995

Abstract

Mediterranean water inflow into the Black Sea is investigated using acoustic and oceanographic data obtained in the Black Sea exit region. Temporal and spatial variability in the flow and their relation to atmospheric and sea level changes are documented. The turbulent boundary layer formed by Mediterranean flow over the sea bottom results in turbulent mixing because of hydrodynamic instability. The path of Mediterranean Sea water and the spreading on the continental shelf is observed with SWATH bottom bathymetry measurements, high resolution echo soundings and CTD probes. The dilution of the saline Mediterranean water as it flows and spreads on the shelf is only 6 psu before reaching the continental slope, where it sinks to a depth appropriate to its density. The Mediterranean effluent is then incorporated in the general circulation of the southwestern Black Sea. The eastward circulation of the surface water is observed using satellite imagery and shipboard ADCP.