Annual layer thicknesses and age-depth (oldest estimate) of Derwael Ice Rise (IC12), Dronning Maud Land, East Antarctica

A 120 m-long ice core was drilled in 2012 on the Derwael Ice Rise, coastal Dronning Maud Land, East Antarctica. Water stable isotopes (d18O and dD) stratigraphy is supplemented by discontinuous major ion profiles and continuous electrical conductivity measurements. The base of the ice core is dated to AD 1759 ± 16, providing a climate proxy for the past ~250 years. This data set presents the core's annual layer thickness history in meters water equivalent for the oldest age-depth estimate before correction for the influence of ice deformation.2012年，科研团队在东南极洲沿海的德龙宁·毛德地（Dronning Maud Land）德瓦尔冰隆（Derwael Ice Rise）钻取了一根总长120米的冰芯。该冰芯的水稳定同位素（water stable isotopes）地层序列包含d¹⁸O与dD数据，并辅以不连续的主要离子剖面与连续的电导率测量数据。经测年，该冰芯底部的年代为公元1759年±16年，可作为过去约250年的气候代用指标。本数据集提供了未校正冰变形影响的最古老年龄-深度估算值对应的冰芯年层厚度历史，单位为水当量米。