Version 1
: Received: 30 May 2024 / Approved: 30 May 2024 / Online: 31 May 2024 (10:04:17 CEST)
How to cite:
Moskovchenko, D.; Soromotin, A.; Khoroshavin, V.; Prikhodko, N.; Kirillov, V.; Koveshnikov, M.; Krylova, E.; Krasnenko, A.; Pechkin, A. Climate Change and the Ob River: A Reassessment of Major and Trace Element Fluxes to the Arctic Ocean. Preprints2024, 2024052081. https://doi.org/10.20944/preprints202405.2081.v1
Moskovchenko, D.; Soromotin, A.; Khoroshavin, V.; Prikhodko, N.; Kirillov, V.; Koveshnikov, M.; Krylova, E.; Krasnenko, A.; Pechkin, A. Climate Change and the Ob River: A Reassessment of Major and Trace Element Fluxes to the Arctic Ocean. Preprints 2024, 2024052081. https://doi.org/10.20944/preprints202405.2081.v1
Moskovchenko, D.; Soromotin, A.; Khoroshavin, V.; Prikhodko, N.; Kirillov, V.; Koveshnikov, M.; Krylova, E.; Krasnenko, A.; Pechkin, A. Climate Change and the Ob River: A Reassessment of Major and Trace Element Fluxes to the Arctic Ocean. Preprints2024, 2024052081. https://doi.org/10.20944/preprints202405.2081.v1
APA Style
Moskovchenko, D., Soromotin, A., Khoroshavin, V., Prikhodko, N., Kirillov, V., Koveshnikov, M., Krylova, E., Krasnenko, A., & Pechkin, A. (2024). Climate Change and the Ob River: A Reassessment of Major and Trace Element Fluxes to the Arctic Ocean. Preprints. https://doi.org/10.20944/preprints202405.2081.v1
Chicago/Turabian Style
Moskovchenko, D., Aleksander Krasnenko and Aleksander Pechkin. 2024 "Climate Change and the Ob River: A Reassessment of Major and Trace Element Fluxes to the Arctic Ocean" Preprints. https://doi.org/10.20944/preprints202405.2081.v1
Abstract
This study investigated the content of macro- and microelements in the lower reaches of the Ob River (Western Siberia). Seasonal sampling was performed over a four-year period (2020-2023) during the main hydrological seasons (winter low water, spring-summer floods, and early fall low water) at three river stations. Suspended and dissolved fractions were separated by filtration through 0.45-micron nitrocellulose filters. The results revealed significant seasonal variations in the elemental content of the Ob River water, associated with changes in catchment inputs, physical and chemical conditions of the aquatic environment, and the amount and composition of incoming suspended sediment. During high water flow events in the Ob River, the concentration of suspended solids increased substantially. These included significant quantities of sparingly soluble hydrolysates such as Al, Ti, Zr, Ga. During the winter period when the Ob River was ice-covered, a 2- to 3-fold rise was observed in the concentration of Na, Mg, Ca, K, Si, Mn. Having accounted for these seasonal variations in water chemistry, we were able to refine our estimates of elemental export to the Arctic Ocean. Compared to estimates from previous studies, we observed with 2.3-fold higher dissolved loads of Mn, 2.1-fold for Zn, 1.6-fold for Fe, and 1.4-fold for Pb.
Keywords
Arctic basin; Western Siberia; climate change; fluxes; trace elements; river suspended matter; dissolved elements
Subject
Environmental and Earth Sciences, Water Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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