V. I. Mankovsky, E. V. Mankovskaya
Marine Hydrophysical Institute of RAS, Sevastopol, Russia
Abstract
The optical characteristics of the Sevastopol anticyclonic eddy are presented. The normal and anomalous optical situations are considered. High water transparency is the characteristic optical feature of anticyclonic eddies. However, in some cases an optical anomaly is observed in Sevastopol anticyclonic eddy, when water transparency is lower than in surrounding waters. It is shown that the cause of the optical anomaly is the capture of shelf waters inside the eddy. This situation is observed repeatedly according to long-term optical observations. As a result, the increased climatic values of beam attenuation coefficient in the region of Sevastopol anticyclonic eddy are observed. This interaction between Sevastopol anticyclonic eddy and the waters of northwestern shelf is confirmed by the results of mathematical modelling of water circulation in the study area, and by data of recent contact measurements.
Keywords
anticyclonic eddy, beam attenuation coefficient, light scattering phase functions, optical anomalies
DOI
10.22449/2413-5577-2019-1-48-53