Biomarker records, organic carbon accumulation, and river discharge in the Holocene southern Kara Sea (Arctic Ocean)
DOI: 10.1007/S00367-006-0049-8
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摘要: Within the Russian–German research project on “Siberian River Run-off (SIRRO)” dealing with freshwater discharge and its influence biological, geochemical, geological processes in Kara Sea, sedimentological organic-geochemical investigations were carried out two well-dated sediment cores from Yenisei Estuary area. The main goal of this study was to quantify terrigenous organic carbon accumulation based biomarker bulk rate data, relationship river climate change through Holocene times. data both clearly indicate predominance matter, reaching 70–100 50–80% total within directly north estuary, respectively. During last ca. 9 cal ka b.p. represented studied section, siliciclastic (terrigenous) input strongly influenced by postglacial sea-level rise climate-related changes discharge. mid-Holocene Climatic Optimum is documented maximum between 8.2 7.3 cal 2,000 years, probably decreased, marine increased due enhanced coagulation fine-grained material.
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