Oceanological studies of the russian sectors of the baltic sea in the year 2023

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Аннотация

The environmental monitoring of the Russian sectors of the Baltic Sea was continued through three expeditions t in 2023: the 55th cruise of the P/V “Akademik Sergei Vavilov” (April), the 54th and 55th cruises of the R/V “Akademik Boris Petrov” (November and December, respectively). Seasonal quantitative estimates of hydrological-hydrochemical and hydrobiological parameters, carbon dioxide fluxes at the water-air interface were obtained, and the geological and geomorphological conditions of the study areas were clarified. Influence of the Neva River to the eastern part of the Gulf of Finland was stable in all seasons and could be traced at a distance of up to 30 nautical miles from the Neva Bay. The South-Eastern Baltic bottom layer experienced extensive hypoxia and mosaic euxunia. Significant aeration of bottom waters occurred in December due to the combined influence of seasonal convection and downwelling resulting from a series of storms. In both study areas, high values of integral primary production were obtained in April, which were two orders of magnitude higher than the December values. The concentration of chlorophyll “a”, accordingly, differed by an order of one magnitude. The Gulf of Finland was an emitter of carbon dioxide into the atmosphere, especially in April, while the South-Eastern Baltic absorbed carbon dioxide in April and was an area of weak emissions in November and December.

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Авторлар туралы

E. Bubnova

Shirshov Institute of Oceanology, Russian Academy of Sciences; Immanuel Kant Baltic Federal University

Хат алмасуға жауапты Автор.
Email: bubnova.kat@gmail.com
Ресей, Moscow; Kaliningrad

V. Sivkov

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: bubnova.kat@gmail.com
Ресей, Moscow

A. Muratova

Shirshov Institute of Oceanology, Russian Academy of Sciences; Immanuel Kant Baltic Federal University

Email: bubnova.kat@gmail.com
Ресей, Moscow; Kaliningrad

S. Mosharov

Shirshov Institute of Oceanology, Russian Academy of Sciences; Immanuel Kant Baltic Federal University

Email: bubnova.kat@gmail.com
Ресей, Moscow; Kaliningrad

K. Korobchenkova

Shirshov Institute of Oceanology, Russian Academy of Sciences; Immanuel Kant Baltic Federal University

Email: bubnova.kat@gmail.com
Ресей, Moscow; Kaliningrad

I. Dudkov

Shirshov Institute of Oceanology, Russian Academy of Sciences; Immanuel Kant Baltic Federal University

Email: bubnova.kat@gmail.com
Ресей, Moscow; Kaliningrad

I. Mosharova

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: bubnova.kat@gmail.com
Ресей, Moscow

A. Polukhin

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: bubnova.kat@gmail.com
Ресей, Moscow

S. Aleksandrov

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: bubnova.kat@gmail.com
Ресей, Moscow

A. Artamonov

A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences

Email: bubnova.kat@gmail.com
Ресей, Moscow

Әдебиет тізімі

  1. Полухин А.А., Казакова У.А., Гусак Г.В., и др. Структура вод и поток углекислого газа над континентальным склоном моря Лаптевых и в проливе Вилькицкого в осенний сезон // Океанология. 2023. Т. 63. № 5. С. 733–744.
  2. Ульянова М.О., Сивков В.В., Александров С.В.и др. Исследования Балтийского моря в 61-м рейсе НИС “Академик Иоффе” // Океанология. 2023. Т. 63. № 5. С. 862–864.
  3. Ульянова М.О., Сивков В.В., Баширова Л.Д. и др. Океанологические исследования Балтийского моря в 56-м рейсе ПС “Академик Иоффе” // Океанология. 2022. Т. 62. № 1. С. 162–164.
  4. Ульянова М.О., Сивков В.В., Баширова Л.Д. и др. Океанологические исследования Балтийского моря в 51-м рейсе ПС “Академик Сергей Вавилов” // Океанология. 2022. Т. 62. № 4. С. 667–669.

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Әрекет
1. JATS XML
2. Fig. 1. Work areas (a – Gulf of Finland, b – South-East Baltic) and location of stations in cruises: 1 – ASV-55, 2 – ABP-54, 3 – ABP-55, 4 – boundaries of Russian sectors of the Baltic Sea, 5 – isobaths every 20 m, 6 – carbon testing site, 7 – lithological testing site.

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© Russian Academy of Sciences, 2024