南极半岛Bransfield海峡ANT28-D1-7孔陆源组分与古气候间关系研究数据集

Terrigeneous Components Dataset of Sediment Core ANT28-D1-7 from Bransfield Strait-Antarctic Peninsula

通过对中国第28次南极科学考察在南极半岛Bransfield海峡采集的ANT28-D1-7钻孔(62°16.163′S,56°35.457′W,水深1,100 m,柱长307 cm,2 cm间隔采样,共获得154个样品)样品进行粘土矿物组合、粗颗粒组分、火山灰丰度及AMS14C测年分析,辅以火山灰层对比,确定了该钻孔精确的年代框架,底部年龄为5.83 ka,顶部年龄为0.28 ka。通过将该钻孔测定数据与邻近区域钻孔相关数据进行对比,分析了该区域陆源组分含量与古环境古气候变化间的关联。该数据集提供了南极半岛ANT28-D1-7孔的年龄数据及陆源组分数据等,为重建该区域中全新世以来的古气候提供支持。本数据集由4个.xls文件组成,数据量149 KB。

The climate changes in Antarctic Peninsula region is particularly sensitive to global warming. Terrigeneous components including clay minerals and coarse fractions in the sediment provide direct information of the surrounding environment changes related to climate oscillations and ice-sheet instability. Multi-proxy investigations and regional core correlation have been performed on core ANT28-D1-7 collected from the Bransfield Strait during the 28 th Chinese National Antarctic Expedition. The AMS 14 C dating establishes the core stratigraphy of the past 5.83 ka, with mean responsibility of 53 cm per millennium. The dataset includes physical and chemical parameters and paleoenvironment proxies of core ANT28-D1-7, including: AMS14 C dating results, clay mineral composition, coarse fractions, tephra concentration and so on with dataset format of excel and size of 156 KB.