Bulk organic carbon, isotopes and terrigenous biomarkers for the marine sediment core SWERUS-L2-31-PC1

Jannik Martens, Örjan Gustafsson

This dataset contains biochemical data analyzed in the sediment core SWERUS-L2-31-PC1, an archive spanning over the past 27,000 years recovered from the Southern Lomonosov Ridge in the Arctic Ocean.

Core SWERUS-L2-31-PC1 provides evidence for permafrost carbon export across the Last Glacial Maximum and through the Holocene. It also suggests importance of permafrost for atmospheric CO₂ and illustrates the sensitivity of permafrost carbon pools to Arctic warming.

The core was recovered during the SWERUS-C3 (Swedish – Russian – US Arctic Ocean Investigation of Climate-Cryosphere-Carbon Interactions) expedition with the Swedish icebreaker Oden during summer 2014.

Citation

Jannik Martens, Örjan Gustafsson (2020) Bulk organic carbon, isotopes and terrigenous biomarkers for the marine sediment core SWERUS-L2-31-PC1. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-swerus-2014-sediment-l2-31-pc1-organic-carbon-1

References

Martens J, Wild B, Muschitiello F, O'Regan M, Jakobsson M, Semiletov I, Dudarev O, Gustafsson Ö (2020) Remobilization of dormant carbon from Siberian Arctic permafrost during three past warming events. Science Advances (accepted article).

Data description

This dataset contains bulk organic carbon (OC) concentrations, δ¹³C-OC, Δ¹⁴C, ΔΔ¹⁴C (corrected for residence time in the sediment), OC flux rates, concentrations and abundance ratios and degradation proxies of lignin phenol biomarkers, as well as concentrations and degradation proxies of HMW n-alkanes and HMW n-alkanoic acids. The dataset also includes results from quantitative source apportionment of the bulk OC.

The dataset is included in one spreadsheet xlsx file with five tabs. See article by Martens et al. (2020) for details.

Comments

The laboratory work was carried out between 2016⁠ – ⁠2019 at the Department of Environmental Science and the Department of Geological Sciences, Stockholm University.