ABSTRACT

Abs t rac t — A hydrologic survey of the test area in the central section of the Black Sea was carried out during Cruise 49 of R/V Mikhail Lomonosov in March 1988. Five self-contained buoy stations were occupied in the center of the area, four of which were located at the extremities of a rectangular cross and the fifth one at its center (43°50'N, 32°45'W). The current velocity was measured at standard levels by MHI1301 current meters. This paper reports some results derived from the treatment of data. We discuss peculiarities of the kinematic structure of the velocity field down to a depth of 1000 m. A countercurrent is revealed in the layer below 500 m. The temporal course of the relative vorticity is scrutinized; the variance of this parameter is shown to be related to atmospheric phenomena. Some estimates of geostrophic currents are provided. Comparison of current velocity shears, determined by the dynamical method with in situ observations has shown the current to be geostrophic below the depth of 75-100 m.