Oceanological Research of the Baltic Sea in the 51st Cruise of the PV Akademik Sergey Vavilov (June–July 2021)

• Published in: Oceanology (Washington. 1965) Vol. 62; no. 4; pp. 578 - 580
• Main Authors: Ulyanova, M. O., Sivkov, V. V., Bashirova, L. D., Kapustina, M. V., Bubnova, E. S., Danchenkov, A. R., Ezhova, E. E., Krechik, V. A., Eremina, T. R.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.08.2022; Springer Nature B.V
• Subjects: Coastal management; Coastal waters; Cruises; Earth and Environmental Science; Earth Sciences; Hot weather; Information; Oceanography; Surveying; Water temperature; carbon polygon; Gulf of Finland; hypoxic conditions; anoxic conditions; Gdansk Deep; Baltic Sea; Gotland Deep
• ISSN: 0001-4370; 1531-8508
• DOI: 10.1134/S0001437022040130

The 51st cruise of the PV Akademik Sergey Vavilov (June 30–July 14, 2021) included the study of redox conditions in the Baltic Sea deeps. Water temperature in the upper quasi-uniform layer significantly exceeded average climatic values for July, especially in the Gulf of Finland (by 7–7.5°С) due to abnormally hot weather. A setup of cyanobacterial aggregates from the subsurface layer to the surface was observed, it occurred earlier than normal. In cooperation with the Immanuel Kant Baltic Federal University an integrated survey was carried out at the Kaliningrad carbon polygon and the IV International Summer School “Coastal Sea Zone: Research, Management and Perspectives” was held.