南极与青藏高原冰芯中阳离子对比研究

本文选取南极Ｎｅｌｓｏｎ站、横断山的海螺沟冰川、喜马拉雅山的达索普冰川、西昆仑的古里雅冰川和天山的托木峰冰川为研究对象，以化学成分作为指标，作了模糊聚类分析。结果表明，在不同水平下分类，冰川之间关系程度不同，反应的气候环境也不同。南极与青藏高原冰川中离子浓度存在差异，尤其是Ｎａ＋和Ｃａ２＋的含量差异显著。Ｎｅｌｓｏｎ站的Ｃａ２＋／Ｎａ＋之值比青藏高原各冰芯低许多，其与海水中Ｃａ２＋／Ｎａ＋之值相当。Ｃａ２＋／Ｎａ＋之值体现了冰川离海洋的距离，Ｃａ２＋／Ｎａ＋之值越小，则冰川离海洋越近，反之则越大。

COMPRESSION BETWEEN ANTARCTICA AND THE QINGHAI TIBETAN PLATEAU BY CATIONS

n this paper we choose five glaciers as studying target, each target has three elements of Na++K+, Ca2+ and Mg2+, using fuzzy cluster analysis we can study them.The results indicate that the relation among the glaciers change with the level λ. As the λ is high, each glacier has its character and no relation with others. With the decreasing of λ, The common character between the Guliya glacier and Tuomufeng glacier appears. With the further decreasing of λ, the common character between the Hailuogou glacier and the Dasuopu glacier appears. Decreasing λ more, the glaciers can be divided into two parts: the Antarctic Nelson station and the Qingzang Plateau glaciers. This indicates that the environment and climate in the Antarctic Nelson station is different from that in the Qingzang Plateau. As λ decreasing more, the boundaries among the glaciers become indistinct. They can be put in one group.