Results of biogeochemical studies in the Russian Arctic seas: isotope and radioisotope data ...

• Main Authors: Lein, Alla Yu, Kravchishina, Marina D, Politova, Nadezhda V, Savvichev, Alexander S, Veslopolova, E F, Mitskevich, Irina N, Ul'yanova, Nina V, Shevchenko, Vladimir P, Ivanov, Mikhail V
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2012
• Subjects: Archive of Ocean Data ARCOD; Chukchi
• Online Access: https://dx.doi.org/10.1594/pangaea.785619; https://doi.pangaea.de/10.1594/PANGAEA.785619

Comprehensive biogeochemical studies including determination of isotopic composition of organic carbon in both suspended matter and surface layer (0-1 cm) bottom sediments (more than 260 determinations of d13C-Corg) were carried out for five Arctic shelf seas: White, Barents, Kara, East Siberian, and Chukchi Seas. The aim of this study is to elucidate causes that change isotopic composition of particulate organic carbon at the water-sediment boundary. It is shown that isotopic composition of organic carbon in sediments from seas with high river run-off (White, Kara, and East Siberian Seas) does not inherit isotopic composition of organic carbon in particles precipitating from the water column, but is enriched in 13C. Seas with low river run-off (Barents and Chukchi Seas) show insignificant difference between d13C-Corg values in both suspended load and sediments because of low content of isotopically light allochthonous organic matter in suspended matter. Biogeochemical studies with radioisotope tracers ... : Supplement to: Lein, Alla Yu; Kravchishina, Marina D; Politova, Nadezhda V; Savvichev, Alexander S; Veslopolova, E F; Mitskevich, Irina N; Ul'yanova, Nina V; Shevchenko, Vladimir P; Ivanov, Mikhail V (2012): Transformation of particulate organic matter at the water-bottom boundary in the Russian Arctic seas: Evidence from isotope and radioisotope data. Translated from Litologiya i Poleznye Iskopaemye, 2012, 2, 115-145, Lithology and Mineral Resources, 47(2), 99-128 ...