ИСТИНА

The water in the Baltic Sea is characterized by a two-layer structure - the deep and superficial layers. However, there are differences in the near shore zone associated bottom relief, seasonality and weather conditions. During joint expeditions of Moscow State University and Baltic Federal University in 2009-2014 it was carried out more than 800 CTD stations with ADCP measurements along the shore of Sambia peninsula. According to the results of work several subtypes of surface and bottom waters has been described. The September subtype is characterized by lower salinity waters. Highest and lowest temperatures were observed in July at the surface and bottom layers respectively. Vertical thermal structure in the summer has five-layer: the upper mixed layer (14-23°C , 6.4-7.4 psu) with the thickness of 7-25 m; thermocline with the thickness up to 25 m; cold intermediate layer with a thickness near 30 m with a temperature of about 3-4°C and salinity of 7.3-8 psu; halocline at a depth of 55-60 m and the bottom layer of 5-7°C temperature, the salinity reaches values of 11-12 psu. Direction of surface currents are depend on prevailing wind direction. In general, there is north transfer along the western coast of the peninsula. Thus, we described the summer vertical structure of coastal waters in the south-eastern Baltic Sea and made coastal current scheme.