Stable isotopes in the basal silty ice preserved in the Greenland Ice Sheet at summit; environmental implications
Stable isotopes in the basal silty ice preserved in the Greenland Ice Sheet at summit; environmental implications
复制标题
格陵兰冰盖顶部保存的基底粉质冰中的稳定同位素；
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
S. Johnsen
中科院分区：
文献类型：
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作者：
R. Souchez;J. Tison;R. Lorrain;M. Lemmens;L. Janssens;M. Stiévenard;J. Jouzel;A. Sveinbjörnsdóttir;S. Johnsen
在气候变化的背景下模拟冰盖行为取决于初始和边界条件，通过研究基冰的组成可以更好地确定这些条件。这项研究是关于格陵兰岛中部顶峰(GRIP岩心)深度钻探所达到的基冰。这种冰的同位素组成表明，在没有冰盖的情况下，在地面形成的冰对它的形成做出了很大贡献。底部的粉质冰是冰盖生长阶段的残留物，可能是最初的堆积。
Modelling ice sheet behaviour in the context of climatic changes depends on initial and boundary conditions which can be better defined by studying the composition of basal ice. This study deals with basal ice reached by deep drilling at Summit in Central Greenland (GRIP core). The isotopic composition of this ice indicates that ice formed at the ground surface in the absence of the ice sheet largely contributed to its formation. The basal silty ice is a remnant of a growing stage of the ice sheet, possibly the original build up.