极地研究2017，Vol.29Issue(2)：210-217,8.DOI:10.13679/j.jdyj.2017.2.210
南极中山站-Dome A断面表层雪稳定同位素空间分布及环境影响因素分析
THE SPATIAL CHANGES AND IMPACT FACTORS OF WATER STABLE ISOTOPE IN SURFACE SNOW ALONG ZHONGSHAN STATION - DOME A
摘要
Abstract
The traverse route from Zhongshan Station to Dome A on the Antarctic ice sheet is an ideal area to study the water-stable isotopic composition of surface snow. Analyzing spatial distribution and impact fac-tors of water-stable isotopes along this section is of significance in reflecting the material source and climate change in the East Antarctic ice sheet. This paper discusses the synthetic effect of different environmental factors based on linear regression and correlation analyses. The results indicated that geographical factors and temperature have a significant correlation withδ18O andδD, and both indexes show a tendency to de-crease as elevations rise: the most important geographical factor. We also discovered that theδ-T slope var-ies in offshore and inland areas by comparing these with other sections. These variations are caused by changes in moisture source conditions and the action of the kinetic fractionation effect in a low-temperature, supersaturated environment. The spatial distribution of excess deuterium differs between the coastal and inland areas, leading to speculation that moisture source conditions, as well as temperature, are key factors.关键词
中山-DomeA断面/表层雪/稳定同位素/环境因素/空间分布Key words
the traverse route from Zhongshan Station to Dome A/surface snow/stable isotope/impact factors/spatial distribution引用本文复制引用
马天鸣,谢周清,李院生,安春雷,史贵涛,于金海,马红梅,姜苏..南极中山站-Dome A断面表层雪稳定同位素空间分布及环境影响因素分析[J].极地研究,2017,29(2):210-217,8.基金项目
国家高技术研究发展计划(863计划)(2011AA090401)、南北极环境综合考察与评估专项(CHINARE2015-02-02)和上海市自然科学基金(14ZR1444000)资助 （863计划）
