| 近2000年来气候环境变化的冰芯记录研究 |
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| 引用本文： | 姚檀栋,杨志红,焦克勤,皇翠兰,田立德.近2000年来气候环境变化的冰芯记录研究[J].地学前缘,1997(Z1). |
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| 作者姓名： | 姚檀栋 杨志红 焦克勤 皇翠兰 田立德 |
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| 作者单位： | 中国科学院兰州冰川冻土所冰芯与寒区环境实验室 |
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| 摘 要： | 文章通过对古里雅冰芯中δ１８Ｏ、冰川积累量和Ｃａ等指标的研究，恢复了过去近２０００ａ来气候环境的变化。作为温度指标的δ１８Ｏ反映了过去近２０００ａ来气候在冷暖波动中逐渐变暖的趋势。作为降水指标的冰川积累量反映出降水变化具有和温度变化相似的特征，即降水在增减波动中显示出逐渐增大的趋势。与温度升高和降水增大的趋势相反，冰芯中的Ｃａ含量呈现明显的减少趋势，说明大气中尘埃含量随气候的变暖逐渐减少。这和我们研究中所得出的冷期时大气尘埃增加，暖期时大气尘埃减少的结论是一致的
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| 关 键 词： | 古里雅冰芯 δ_(18)O 冰川积累量 气候环境 |
A STUDY OF CLIMATE AND ENVIRONMENT IN THE PAST 2000 YEARS BASED ON ICE CORE |
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| Yao Tandong\ \ Yang Zhihong\ \ Jiao Keqin Huang Cuilan\ \ Tian Lide.A STUDY OF CLIMATE AND ENVIRONMENT IN THE PAST 2000 YEARS BASED ON ICE CORE[J].Earth Science Frontiers,1997(Z1). |
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| Authors: | Yao Tandong\ \ Yang Zhihong\ \ Jiao Keqin Huang Cuilan\ \ Tian Lide |
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| Abstract: | The climatic and environmental changes in the past 2000 years were reconstructed based on the studies of δ 18 O, glacial accumulation and calcium. δ 18 O, an index of temperature, revealed that there was a trend of climatic warming in the past 2000 years. Glacial accumulation, an index of precipitation, indicated that there was a trend of precipitation increase, which is similar to temperature increase. In contrast, calcium in the ice core, an index of dust, showed an evident decreasing trend in the past 2000 years, implying that dust was decreasing with climatic warming, which is consistent with the conclusion in the paper that there is more dust in cold periods and less dust in warm periods. |
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| Keywords: | Guliya ice core δ 18 O glacial accumulation climate and environment |
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