Ruben, Manuel Jannis; Mollenhauer, Gesine: Pore water data of sediment core YC22_MR_7 off Herschel island (Yukon Coast 2022) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965375 (dataset in review), In: Ruben, MJ; Mollenhauer, G: Biogeochemical data of sediment cores of Herschel island (Yukon Coast 2022) [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965379 (dataset in review)
Abstract:
In July 2022 within the framework of an Alfred-Wegener-Institute-managed expedition and the Nunataryuk project, sediment core YC22_MR_7 was taken off the coast of Herschel Island, Canada, using a hand corer. Data 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.
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).
References:
Mollenhauer, Gesine; Grotheer, Hendrik; Gentz, Torben; Bonk, Elizabeth; Hefter, Jens (2021): Standard operation procedures and performance of the MICADAS radiocarbon laboratory at Alfred Wegener Institute (AWI), Germany. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 496, 45-51, https://doi.org/10.1016/j.nimb.2021.03.016
Oni, Oluwatobi Emmanuel; Miyatake, Tetsuro; Kasten, Sabine; Richter-Heitmann, Tim; Fischer, David; Wagenknecht, Laura; Kulkarni, Ajinkya; Blumers, Mathias; Shylin, Sergii I; Ksenofontov, Vadim; Costa, Benilde F O; Klingelhöfer, Göstar; Friedrich, Michael W (2015): Distinct microbial populations are tightly linked to the profile of dissolved iron in the methanic sediments of the Helgoland mud area, North Sea. Frontiers in Microbiology, 6, https://doi.org/10.3389/fmicb.2015.00365
Torres, Marta E; Mix, Alan C; Rugh, William D (2005): Precise δ 13 C analysis of dissolved inorganic carbon in natural waters using automated headspace sampling and continuous‐flow mass spectrometry. Limnology and Oceanography-Methods, 3(8), 349-360, https://doi.org/10.4319/lom.2005.3.349
Project(s):
Funding:
Horizon 2020 (H2020), grant/award no. 773421: NUNATARYUK, Permafrost thaw and the changing Arctic coast, science for socioeconomic adaptation
Coverage:
Latitude: 69.573203 * Longitude: -138.943794
Date/Time Start: 2022-07-07T00:00:00 * Date/Time End: 2022-07-07T00:00:00
Minimum DEPTH, sediment/rock: -0.05 m * Maximum DEPTH, sediment/rock: 0.28 m
Event(s):
CA-Land_2022_YukonCoast_MR_7 (YC22_MR_7) * Latitude: 69.573203 * Longitude: -138.943794 * Date/Time: 2022-07-07T00:00:00 * Elevation: -6.0 m * Location: Herschel Island, Yukon Territory, Canada * Campaign: CA-Land_2022_YukonCoast (Yukon Coast 2022) * Basis: AWI Arctic Land Expedition * Method/Device: Hand corer (HCOR)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
269 data points