TY JOUR TI Sample application of a low-cost X-band monitoring system of surface currents at the Black Sea shore KW X-band radar KW radiowave oceanography KW currents KW sub-mesoscale vortex KW Black Sea JO Russian Journal of Earth Sciences AU Ivonin, D.V. AU Telegin, V.A. AU Bakhanov, V.V. AU Ermoshkin, A.V. AU Azarov, A.I. PY 2011 IS 12 PB Geophysical Center of the Russian Academy of Sciences