Distribution of suspended particulate matter in the Barents Sea in late winter 2019
https://doi.org/10.30758/0555-2648-2020-66-3-267-278
Abstract
Arctic summer and winter sea-ice extent is continuously declining as a result of climate change, affecting the hydrography and biogeochemical cycles on the seasonally ice-free Eurasian Shelves. The prolongation of the open-water season causes higher sediment resuspension and coastal erosion due to larger wind fetch and wave heights. This impacts the optical properties of the water column and hence biological productivity in this region. During “Transarktika-2019” leg 1 in late winter 2019, a comprehensive dataset of filtered water samples and optical data was collected throughout the central and northern Barents Sea. Combining suspended particulate matter concentrations obtained from water samples and optical data revealed a pronounced bottom nepheloid layer on the Barents Sea shelf even under ice-covered conditions. Moreover, the data indicate that the Franz Viktoria Trough could be a major pathway for sediment transport into the Eurasian Basin. Therefore, to link changes in sediment distribution and its impact on the ecosystem under a warming climate, further studies of sediment dynamics are required, particularly during winter.
Supporting agencies: This research was supported by the Russian-German research projects: “CATS: The Changing Arctic Transpolar System” funded by the BMBF (03F0776) and by the Russian Foundation for Basic Research (RFBR) grant 18-05-60083.
About the Authors
S. Buettner
Institute for Ecosystem Research, Kiel University
Germany
Germany
V. V. Ivanov
State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute; Lomonosov Moscow State University
Russian Federation
Russian Federation
St. Petersburg
Moscow
H. Kassens
GEOMAR Helmholtz Centre for Ocean Research Kiel
Germany
Kiel
Germany
Kiel
N. A. Kusse-Tiuz
State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
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For citations:
Buettner S., Ivanov V.V., Kassens H., Kusse-Tiuz N.A. Distribution of suspended particulate matter in the Barents Sea in late winter 2019. Arctic and Antarctic Research. 2020;66(3):267-278. https://doi.org/10.30758/0555-2648-2020-66-3-267-278
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