极地研究2017，Vol.29Issue(1)：45-55,11.DOI:10.13679/j.jdyj.2017.1.045
东南极冰盖中山站-Dome A断面表层雪中SO42–和MSA的空间分布特征
SPATIAL DISTRIBUTION CHARACTERISTICS OF SO42–AND MSA IN SURFACE SNOW ALONG THE TRAVERSE ROUTE FROM ZHONGSHAN STATION TO DOME A, EAST ANTARCTICA
摘要
Abstract
The traverse route from Zhongshan Station to Dome A in East Antarctica is one of the main expedition routes of the International Trans-Antarctic Scientific Expedition (ITASE), which has considerable global scientific significance. Following the inland ice sheet scientific expedition of the 31st CHINARE, surface snow samples collected at 10-km intervals along this route were analyzed using ion chromatography and content concentrations of sulfur compounds (SO42–and MSA) were obtained. The nssSO42–and MSA con-tents along the traverse route presented no obvious overall trend of decrease in spatial variation with in-creasing distance from the coast, but regional trends were detected. Significant correlation was found be-tween nssSO42– and MSA in the inland plateau area of Dome A, with a linear relation of [MSA] = 0.1158 × [nssSO42–] – 1.1497 (r2= 0.75). The MSA/nssSO42– ratio along the traverse route was also calculated (range: 0.04–0.47; mean: 0.14), which revealed that the ratio in coastal areas was higher than inland areas. Different sources or the wind field streamlines of the transect might be the main reasons for the finding of inconsis-tently higher MSA/nssSO42– ratios at lower temperatures. Further research on the sulfur compounds along the transect in this study would be enhanced by consideration of the climatic environment based on ice core records of nssSO42–and MSA.关键词
SO42–/MSA/空间分布/中山站-DomeA断面/东南极冰盖Key words
SO42–/MSA/spatial distribution/Zhongshan Station-Dome A transect/East Antarctica ice sheet引用本文复制引用
于金海,李院生,马红梅,史贵涛,马天鸣,安春雷,姜苏..东南极冰盖中山站-Dome A断面表层雪中SO42–和MSA的空间分布特征[J].极地研究,2017,29(1):45-55,11.基金项目
南北极环境综合考察与评估专项(CHINARE2015-02-02)和国家高技术研究发展计划(836 计划)(2011AA090401)资助 （CHINARE2015-02-02）
