Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46629 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Seasonal variations in the vertical structure of temperature and salinity fields in the shallow Baltic Sea off the Kaliningrad Region coast Seasonal variations in the vertical structure of temperature and salinity fields in the shallow Baltic Sea off the Kaliningrad Region coast Kapustina M V Kapustina M V Krechik V A Krechik V A Gritsenko V A Gritsenko V A Atlantic Branch of the Shirshov Institute of Oceanology, Russian Academy of Sciences ru Atlantic Branch of the Shirshov Institute of Oceanology, Russian Academy of Sciences ru Immanuel Kant Baltic Federal University ru Immanuel Kant Baltic Federal University ru Atlantic Branch of the Shirshov Institute of Oceanology, Russian Academy of Sciences ru Atlantic Branch of the Shirshov Institute of Oceanology, Russian Academy of Sciences ru 17 1 1 7 29 10 2021 https://rjes.ru/en/nauka/article/46629/view

In this paper we describe the seasonal characteristics of the vertical thermohaline structure of the shallow waters of the southeastern part of the Baltic Sea off the Kaliningrad region using the field data of research cruises. The analysis of the original set of experimental data in 2003--2014 confirmed that heating and cooling processes occur, as a rule, at a depth of 30--35~m. The upper 5--10~m layer of water is involved in the heat exchange with the atmosphere. The depth of the thermocline varies from 10--30~m up to 17--35~m in spring and summer. Salinity field of the Baltic shallow water is characterized by a small range of variability in all seasons. Fluctuations in the measured values of salinity in coastal waters do not exceed 0.5~PSU (Practical Salinity Unit). The greatest variations in the salinity of coastal waters (up to 0.7~PSU) are characteristic of the upper layer 5 to 10~m thick in winter and summer. Average seasonal linear trends of temperature and salinity variation were obtained.

In this paper we describe the seasonal characteristics of the vertical thermohaline structure of the shallow waters of the southeastern part of the Baltic Sea off the Kaliningrad region using the field data of research cruises. The analysis of the original set of experimental data in 2003--2014 confirmed that heating and cooling processes occur, as a rule, at a depth of 30--35~m. The upper 5--10~m layer of water is involved in the heat exchange with the atmosphere. The depth of the thermocline varies from 10--30~m up to 17--35~m in spring and summer. Salinity field of the Baltic shallow water is characterized by a small range of variability in all seasons. Fluctuations in the measured values of salinity in coastal waters do not exceed 0.5~PSU (Practical Salinity Unit). The greatest variations in the salinity of coastal waters (up to 0.7~PSU) are characteristic of the upper layer 5 to 10~m thick in winter and summer. Average seasonal linear trends of temperature and salinity variation were obtained.

 Southeastern part of the Baltic Sea shallow waters temperature salinity thermohaline structure seasonal variability Southeastern part of the Baltic Sea shallow waters temperature salinity thermohaline structure seasonal variability

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