Geoecological conditions in the Baltic sea in 2017

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In 2017, comprehensive geological, geophysical, hydrological and hydrochemical researches were conducted in the South-Eastern Baltic Sea and the Gulf of Finland. 1775 nautical miles of surveys were conducted using multibeam echosounder and profiler. Surface bottom sediments (156 samples), the upper undisturbed layer of pelitic sediments and bottom water (15 samples), 2 cores were taken. Laboratory analyzes were performed on pH (189), concentration of oxygen (246), suspended matter (286) and oil products (110). Microplastic was also collected in the water (118) and bottom sediments (45). Conducting comprehensive research in the South-Eastern Baltic Sea allowed us to record the weakening of the Major Baltic Inflow effects, followed by changes in the environmental conditions of the region. Geological surveys in the Gulf of Finland expanded the coverage area of the bottom of multibeam surveys and contributed to the refinement of the formation processes of linear and circular transgressions at the bottom.

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A. Krek

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

编辑信件的主要联系方式.
Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow; Kaliningrad

M. Ulyanova

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow

E. Bubnova

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

Email: bubnova.kat@gmail.com
俄罗斯联邦, Moscow; Kaliningrad

V. Krechik

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow

D. Ryabchuk

A.P. Karpinsky Russian Geological Research Institute

Email: daria_ryabchuk@mail.ru
俄罗斯联邦, St. Petersburg

A. Danchenkov

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

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow; Kaliningrad

D. Churin

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow

M. Kapustina

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

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow; Kaliningrad

E. Tkacheva

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

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow; Kaliningrad

L. Khatmullina

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

Email: av_krek_ne@mail.ru
俄罗斯联邦, Moscow; Kaliningrad

A. Sergeev

A.P. Karpinsky Russian Geological Research Institute

Email: daria_ryabchuk@mail.ru
俄罗斯联邦, St. Petersburg

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