Geoecological conditions in the Baltic sea in 2017

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  • Authors: Krek A.V.1,2, Ulyanova M.O.1, Bubnova E.S.1,2, Krechik V.A.1, Ryabchuk D.V.3, Danchenkov A.R.1,2, Churin D.A.1, Kapustina M.V.1,2, Tkacheva E.S.1,2, Khatmullina L.I.1,2, Sergeev A.Y.3
  • Affiliations:
    1. Shirshov Institute of Oceanology, Russian Academy of Sciences
    2. Immanuel Kant Baltic Federal University
    3. A.P. Karpinsky Russian Geological Research Institute
  • Issue: Vol 59, No 1 (2019)
  • Pages: 184-186
  • Section: Information
  • URL: https://journals.eco-vector.com/0030-1574/article/view/11844
  • DOI: https://doi.org/10.31857/S0030-1574591184-186

Abstract


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.


A. V. Krek

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

Author for correspondence.
Email: av_krek_ne@mail.ru

Russian Federation, Moscow; Kaliningrad

M. O. Ulyanova

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru

Russian Federation, Moscow

E. S. Bubnova

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

Email: bubnova.kat@gmail.com

Russian Federation, Moscow; Kaliningrad

V. A. Krechik

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru

Russian Federation, Moscow

D. V. Ryabchuk

A.P. Karpinsky Russian Geological Research Institute

Email: daria_ryabchuk@mail.ru

Russian Federation, St. Petersburg

A. R. Danchenkov

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

Email: av_krek_ne@mail.ru

Russian Federation, Moscow; Kaliningrad

D. A. Churin

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: av_krek_ne@mail.ru

Russian Federation, Moscow

M. V. Kapustina

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

Email: av_krek_ne@mail.ru

Russian Federation, Moscow; Kaliningrad

E. S. Tkacheva

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

Email: av_krek_ne@mail.ru

Russian Federation, Moscow; Kaliningrad

L. I. Khatmullina

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

Email: av_krek_ne@mail.ru

Russian Federation, Moscow; Kaliningrad

A. Yu. Sergeev

A.P. Karpinsky Russian Geological Research Institute

Email: daria_ryabchuk@mail.ru

Russian Federation, St. Petersburg

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