中国第38次南极科学考察(2021-2022年)中山站附近雪冰样品分析数据
收藏资源简介:
南极冰盖表层雪内的物理过程和现代气候及环境记录是南极冰雪学研究的重要内容。南极冰盖的一般特征,冰盖浅表层内的物理过程和环境、气候记录,都可以从化学指标中找到。雪冰内的稳定同位素比率、主要阴、阳离子含量的时空分布和气候的精细记录提供了绝佳的分析平台。 1.测量仪器 仪器名称:离子色谱仪、同位素质谱仪 2.观测方法和所获观测资料 在华东师范大学环境稳定同位素实验室(ECNU-ESIL)使用Dionex ICS3000离子色谱仪测定了降雪中的化学离子(Na+, K+, Mg2+, Ca2+, Cl−, NO3−, and SO42−) ;使用反硝化细菌法测定了NO3−的氮氧稳定同位素组成,获取δ15N and δ18O数据。 3.观测区域 中山站
Physical processes within the surface snow of the Antarctic Ice Sheet, alongside modern climate and environmental records, represent core research content in Antarctic glaciology. General features of the Antarctic Ice Sheet, physical processes in its shallow subsurface layers, as well as environmental and climate records, can all be extracted from chemical proxies. The spatiotemporal distributions of stable isotope ratios, major anion and cation concentrations in snow ice, and high-resolution climate records offer an exceptional analytical platform. 1. Measuring Instruments Instrument Names: Ion Chromatograph, Isotope Ratio Mass Spectrometer 2. Observation Methods and Acquired Observation Data At the Environmental Stable Isotope Laboratory of East China Normal University (ECNU-ESIL), chemical ions (Na+, K+, Mg2+, Ca2+, Cl−, NO3−, and SO42−) in snowfall were analyzed using a Dionex ICS3000 ion chromatograph; the nitrogen and oxygen stable isotope compositions of NO3− were measured via the denitrifying bacteria method, yielding δ15N and δ18O datasets. 3. Observation Region Zhongshan Station




