Biogeochemical data of sediment cores of Herschel island (Yukon Coast 2022)

DOI

In July 2022 within the framework of an Alfred-Wegener-Institute-managed expedition and the Nunataryuk project, sediment cores were taken at three locations, off the coast of Herschel Island, Canada, using a hand corer:YC22_MR_6: 69°34'23.12N, 138°54'37.76W; 3 m water depth; July 6th 2022YC22_MR_7: 69°34'23.53N, 138°56'37.66W, 6 m water depth; July 7th 2022YC22_MR_8: 69°30'22.75''N, 138°53'21.69''W; 45 m water depth; July 24th 2022Data sets were obtained to investigate carbon feedback from the sediments to the water column and atmosphere, using DIC concentrations and isotopic values. The local sediments are supplied primarily by organic carbon previously stored in adjacent permafrost soils (biomarker and bulk data), which erode and redeposit quickly (age model) on the ocean floor.The acquired data includes:1) Sediment data: Bulk total organic carbon content (Lamping et al., 2021) and its isotopic values for 13C (Brodie et al., 2011; Werner & Brand, 2001) and 14C (Mollenhauer et al., 2021) and Biomarker data: Quantifying alkanes (CPI) , and fatty acids (TAR ratio) as described by Wei et al. (2020), Glycerol dialkyl glycerol tetraethers (GDGTs basis for BIT-Index) after Hopmans et al. (2016), Hopanes (fßß) following instructions by Meyer et al., (2019), and Sterols (Dinosterol) after Dauner et al. (2022).2) Porewater was extracted from the cores using rhizomes and quantified as described in Oni et al., (2015). Dissolved inorganic carbon isotope signatures were determined as CO2 for 13C (Torres et al., 2005) and 14C (Mollenhauer et al., 2021).3) Intact polar lipid fatty acids were extracted from the sediments, purified, and 14C analysis was performed as described in Ruben et al. (2023). The 13C isotopy was determined with GC-IRMS (Elvert et al., 2003). The respective precursor lipids of the polar fraction used for isotope analysis were quantified following the method described in Wörmer et al. (2013). Datasets are to be found at doi:10.1594/PANGAEA.966262 and doi:/10.1594/PANGAEA.966264.4) Sedimentary age model of core YC22_MR_7 assuming constant rate of supply (CRS) model (Appleby, 2001), based on data obtained with a HPGe gamma detector.

Identifier
DOI https://doi.org/10.1594/PANGAEA.965379
Related Identifier References https://doi.org/10.1016/j.quascirev.2011.07.003
Related Identifier References https://doi.org/10.3389/fmars.2022.924556
Related Identifier References https://doi.org/10.1080/01490450303894
Related Identifier References https://doi.org/10.1016/j.orggeochem.2015.12.006
Related Identifier References https://doi.org/10.5194/cp-17-2305-2021
Related Identifier References https://doi.org/10.1088/1748-9326/ab2653
Related Identifier References https://doi.org/10.1016/j.nimb.2021.03.016
Related Identifier References https://doi.org/10.3389/fmicb.2015.00365
Related Identifier References https://doi.org/10.1038/s41561-023-01198-z
Related Identifier References https://doi.org/10.4319/lom.2005.3.349
Related Identifier References https://doi.org/10.5194/bg-17-4489-2020
Related Identifier References https://doi.org/10.1002/rcm.258
Related Identifier References https://doi.org/10.1016/j.orggeochem.2013.03.004
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.965379
Provenance
Creator Ruben, Manuel Jannis ORCID logo; Mollenhauer, Gesine (ORCID: 0000-0001-5138-564X)
Publisher PANGAEA
Publication Year 2024
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 773421 https://cordis.europa.eu/project/id/773421 NUNATARYUK, Permafrost thaw and the changing Arctic coast, science for socioeconomic adaptation
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 7 datasets
Discipline Earth System Research
Spatial Coverage (-138.944W, 69.506S, -138.889E, 69.573N)
Temporal Coverage Begin 2022-07-06T00:00:00Z
Temporal Coverage End 2022-07-24T00:00:00Z