Elbrus 2020 ice core records (δ¹⁸O, dust , CH4)

Here we present a record of stable water isotopes (δ18O, δD), mineral dust, and methane (CH4) from a 96.3 m ice core drilled to bedrock in 2020 at the eastern summit of Mount Elbrus (5,565 m a.s.l., Caucasus). Continuous-flow analysis provides high-resolution measurements, while the chronology is constrained using 210Pb, 3H, radiocarbon (14C), and three-dimensional ice-flow modelling. The upper 75 m of the ice core provide a dated record of the last millennium.本数据集收录了2020年在高加索地区厄尔布鲁士山东峰（海拔5565米）钻取至基岩的96.3米冰芯中的稳定水同位素（stable water isotopes，δ¹⁸O、δD）、矿物尘埃与甲烷（methane，CH₄）记录。本研究采用连续流动分析（continuous-flow analysis）技术获取了高分辨率测量数据，冰芯的年代序列通过铅-210（²¹⁰Pb）、氚（³H）、放射性碳（radiocarbon，¹⁴C）以及三维冰流模拟（three-dimensional ice-flow modelling）进行约束。该冰芯上部75米可提供近千年的定年记录。