中国第35次南极科学考察(2018-2019年) 南极雪坑氢氧同位素分析数据

稳定同位素的丰度能够反映天然物质的来源、运移过程以及经历的各种变化，因而其作为提取环境变化信息的重要指标被广泛使用。雪冰中，稳定同位素主要指构成水分子的氢氧稳定同位素（18O、2H或D），雪冰样品稳定同位素的研究载体主要为表层雪和冰芯（包括雪芯），前者主要着重于描述空间分布特征，帮助认知不同区域的气候及物质来源，为冰芯古环境记录的解读提供科学依据。后者则用于体现时间变化特征，通过宏观尺度的冰盖气候记录以建立完整的环境序列。
本数据为中国第35次南极科学考察实地采集雪坑样品的氢氧同位素分析检测数据。于2018年12月19日至2019年1月28日在中山站-Dome A之间选择三个点位，采集雪坑样品。
测量仪器名称：液态水同位素分析仪，仪器型号：DLT-100，精确度：18O/16O 0.1‰、D/H 0.3‰，标定方法：外标法。

The abundances of stable isotopes can reflect the sources, migration processes and various changes experienced by natural substances, so they have been widely used as important indicators for extracting environmental change information. In snow ice, stable isotopes mainly refer to the hydrogen and oxygen stable isotopes (¹⁸O, ²H or D) that make up water molecules. The main research carriers for stable isotope analysis of snow ice samples are surface snow and ice cores (including snow cores). The former mainly focuses on describing spatial distribution characteristics, helping to understand the climate and material sources of different regions, and providing scientific basis for the interpretation of paleoenvironmental records from ice cores. The latter is used to reflect temporal variation characteristics, and establish a complete environmental sequence through macro-scale ice sheet climate records.

This dataset contains hydrogen and oxygen isotope analysis and test data of snow pit samples collected on-site during the 35th Chinese National Antarctic Research Expedition. Snow pit samples were collected at three selected sites between Zhongshan Station and Dome A from December 19, 2018 to January 28, 2019.

Measurement instruments: Liquid Water Isotope Analyzer, model: DLT-100, precision: 0.1‰ for ¹⁸O/¹⁶O, 0.3‰ for D/H, calibration method: external standard method.