Bulk total organic carbon content and its isotope composition data of sediment core YC22_MR_8 off Herschel island (Yukon Coast 2022)

In July 2022 within the framework of an Alfred-Wegener-Institute-managed expedition and the Nunataryuk project, sediment core YC22_MR_8 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.The acquired data includes sediment data of 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).

2022年7月，在阿尔弗雷德·韦格纳研究所（Alfred-Wegener-Institute）主导的科考航次及 Nunataryuk 项目框架下，研究人员采用手动取样器（hand corer）在加拿大赫歇尔岛（Herschel Island）近海采集到沉积物岩芯 YC22_MR_8。为探究沉积物向水体与大气的碳反馈过程，研究人员通过测定溶解无机碳（DIC）浓度及同位素值构建了本数据集。当地沉积物的有机碳主要来源于周边多年冻土土壤中储存的有机碳（该结论基于生物标志物（biomarker）及整体数据（bulk data）），这些有机碳会快速侵蚀并重新沉积于海底（依据年代模型（age model））。该数据集包含沉积物整体总有机碳含量数据（Lamping et al., 2021）及其13C（Brodie et al., 2021；Werner & Brand, 2001）和14C（Mollenhauer et al., 2021）同位素值。