CONCENTRATIONS AND COMPOSITION OF HYDROCARBONS IN ICE AND SURFACE MICROLAYER OF THE BARENTS AND KARA SEAS IN JULY–AUGUST 2024

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Abstract

The paper presents data on the concentrations and composition of hydrocarbons (aliphatic hydrocarbons – АНС and polycyclic aromatic hydrocarbons – РАН) in ice, surface microlayer (SML, up to 1000 μm thick) and surface waters in the Barents and Кага Seas (cruise 96 of the R/V Akademik Mstislav Keldysh, July–August 2024). Due to the water content of the ice, only a slight accumulation of hydrocarbons occurs compared to surface waters and compared to the SML. As before, the influence of autochthonous processes on the composition of alkanes in ice and SML is insignificant and differs from their composition in multi-year ice. Despite the different sources of these hydrocarbon classes, a dependence in the distribution of АНС and РАН in suspension in the SML was observed for all the samples collected (r = 0.67, p = 0.05).

About the authors

I. A. Nemirovskaya

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: nemir44@mail.ru
Moscow, Russia

A. V. Medvedeva

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

Moscow, Russia

V. Yu. Kalgin

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

Moscow, Russia

S. K. Gulev

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

Academician of the RAS Moscow, Russia

N. V. Politova

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

Moscow, Russia

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