Dataset - "Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica"

We provide in this dataset the isotopic and ionic records from a 120 m-long ice core drilled at the summit of Derwael ice rise (70°14'44.88'' S, 26°20'5.64'' E) situated in coastal Dronning Maud Land, East Antarctica. Ions concentrations (Na+, MSA, Cl-, SO42- and NO3-) and water stable isotopes (δ18O, δD and d-excess) are presented for the top 103 meters (corresponding to 1815 and the Tambora eruption) with a continuous record for the water stable isotopes and discontinuous sections for ions concentrations. A complementary database “Annual layer thicknesses and age-depth (oldest estimate) of Derwael Ice Rise (IC12), Dronning Maud Land, East Antarctica” with age model and annual layer thickness is available at https://doi.org/10.1594/PANGAEA.857574 and the companion paper is Philippe et al., 2016 (“Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica”, https://doi.org/10.5194/tc-10-2501-2016).

本数据集收录了取自南极东部沿海毛德皇后地（Dronning Maud Land）德尔韦尔冰隆（Derwael ice rise）峰顶（南纬70°14'44.88''，东经26°20'5.64''）钻取的120米长冰芯的同位素与离子记录。本数据集展示了冰芯顶部103米（对应年代为1815年及坦博拉火山喷发事件）的离子浓度（Na+、甲基磺酸（MSA）、Cl⁻、SO₄²⁻与NO₃⁻）及水体稳定同位素（δ¹⁸O、δD及氘过量参数（d-excess））数据，其中水体稳定同位素为连续记录，离子浓度数据存在不连续区段。配套数据集《南极东部毛德皇后地德尔韦尔冰隆（IC12）年层厚度与年龄-深度（最老估算值）》（包含年代模型与年层厚度数据）可通过https://doi.org/10.1594/PANGAEA.857574获取；相关关联论文为Philippe等人2016年发表的《冰芯证据揭示南极东部沿海毛德皇后地20世纪地表质量平衡提升》（https://doi.org/10.5194/tc-10-2501-2016）。