| 北极沿岸地区水体中氢氧稳定同位素组成及水分转化过程研究 |
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| 引用本文： | 宋天泽.北极沿岸地区水体中氢氧稳定同位素组成及水分转化过程研究[J].冰川冻土,2011,33(2):261-267. |
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| 作者姓名： | 宋天泽 |
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| 作者单位： | 北京师范大学第二附属中学,北京,100875 |
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| 基金项目： | 国家自然科学基金项目(40830638)资助 |
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| 摘 要： | 2010年7月参加第三届北京中学生北极科学考察活动,收集了北极沿岸地区的挪威斯瓦尔巴德群岛(Svalbard)、冰岛、格陵兰沿岸地区的海水、沿岸海水、海冰表面冰样、地表径流等水体样品,对样品进行了氢氧稳定同位素成分测定,分析了北极沿岸地区水体的水循环过程.结果表明,该地区不同水体中的稳定同位素具有不同特征.沿岸海水中δ...
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| 关 键 词： | 北极沿岸 水体 氢氧同位素 水分转化 |
Stable Oxygen and Hydrogen Isotopes in Water and Water Cycle along the Arctic Coast |
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| SONG Tian-ze.Stable Oxygen and Hydrogen Isotopes in Water and Water Cycle along the Arctic Coast[J].Journal of Glaciology and Geocryology,2011,33(2):261-267. |
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| Authors: | SONG Tian-ze |
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| Institution: | SONG Tian-ze(The Second High School Attached to Beijing Normal University,Beijing 100875,China) |
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| Abstract: | Aimed at understanding the water cycle process in the Arctic coast,ocean water,coast sea water,surface snow on sea ice and land surface water were sampled in Svalbard Islands,Iceland,Greenland during the expedition,July-August,2010.These samples were analyzed in laboratory for oxygen and hydrogen isotopes.It is revealed that there is huge differentia of stable isotope component in various water samples.Through the analysis of δ18O and δD in these water samples,it is found that the coast sea water are apparently affected by terrestrial water,and the stable isotopes in water are also related to the distance to the land and the size of the land,whether in the open sea or in the fjord.It is also found that in ocean water the relation between of δ18O and δD is different from that in fresh water(including land surface runoff,glacier ice and upper sea ice).The mixed water of terrestrial water and ocean water collected in the fjord of Greenland has a relation between δ18O and δD falling in between the ocean water and fresh water.The isotope method is found can be used to evaluate the contribution ratio of glacier melting water to the total in the Greenland coast.The results shows that about 1/3 of fjord sea water comes from glacier melting water,and the others comes from the open ocean,with the contribution of open sea water increasing with the distance from the coast. |
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| Keywords: | Arctic coast water oxygen and hydrogen isotope water cycle |
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