Chemical and isotopic composition of interstitial waters from the Kara Sea and Yenisey estuary, supplement to: Lein, Alla Yu; Miller, Yury M; Namsaraev, Bair B; Pimenov, Nikolay V; Rusanov, Igor I; Savvichev, Alexander S; Ivanov, Mikhail V; Pavlova, Galina A (1995): Biogeochemical processes of sulfur turnover in the early stages of sediment diagenesis along the Yenisey River - Kara Sea section. Oceanology, 34, 619-629

• Main Authors: Lein, Alla Yu, Miller, Yury M, Namsaraev, Bair B, Pimenov, Nikolay V, Rusanov, Igor I, Savvichev, Alexander S, Ivanov, Michael, Pavlova, Galina A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1995
• Subjects: Grab; Gravity corer; Box corer; DM49; Dmitry Mendeleev; Archive of Ocean Data ARCOD; Kara Sea; Nikolay; Pavlova; Yenisey; yenisey river
• Online Access: https://dx.doi.org/10.1594/pangaea.742598; https://doi.pangaea.de/10.1594/PANGAEA.742598

Processes of early sediment diagenesis, including chemical composition of interstitial waters, content of different sulfur compounds, and rates of sulfate reduction were investigated. Along a profile from the Yenisey River to the Kara Sea, sulfate reduction intensities were high (up to 1.5 µg S/kg/day) in the delta region and in its northern part. Intensities were comparable to those found in shallow-water sediments of the North Sea. In estuarine sediments, where different transformations were possible, lower rates of bacterial sulfate reduction were observed (0.03 to 0.06 µg S/kg/day). Annual production of reduced sulfur in sediments was 24 million tons, and only 0.5 million tons (2%) were deposited. Annual consumption of organic carbon during process of sulfate reduction in the Yenisey delta region was 17.6 million tons.