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冰川冻土 ›› 2004, Vol. 26 ›› Issue (3): 284-288.doi: 10.7522/j.issn.1000-0240.2004.0047

• 冰冻圈与全球变化 • 上一篇    下一篇

慕士塔格冰川海拔7000m处冰芯钻孔温度

李真1, 姚檀栋1,2, 田立德1,2, 徐柏青1,2, 邬光剑1, 朱国才1   

  1. 1. 中国科学院, 寒区旱区环境与工程研究所冰芯与寒区环境重点实验室, 甘肃, 兰州, 730000;
    2. 中国科学院, 青藏高原研究所, 北京, 100029
  • 收稿日期:2003-11-24 修回日期:2004-03-15 出版日期:2004-06-25 发布日期:2012-04-26
  • 基金资助:
    国家自然科学基金优秀创新群体项目(40121001);国家自然科学基金重点项目(9012005);科技部基础研究前期研究专项(2001CCB00300)资助

Borehole Temperature at the Ice-core Drilling Site in the Muztag Ata Glacier, East Pamirs

LI Zhen1, YAO Tan-dong1,2, TIAN Li-de1,2, XU Bai-qing1,2, WU Guang-jian1, ZHU Guo-cai1   

  1. 1. Key Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China;
    2. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2003-11-24 Revised:2004-03-15 Online:2004-06-25 Published:2012-04-26

摘要: 慕士塔格冰川海拔7010m处的冰芯钻孔温度的观测结果表明,该处冰温变化曲线在夏末依然呈暖季型,其冰层的整体温度(-26.17~-25.63℃)和最低温度(-26.17℃)是目前中低纬度山地冰川中最低的,而底部冰床温度(-25.73℃)则是目前所有实测冰床温度资料中最低的.在积累区,海拔6250~7010m之间冰层温度的高度效应显著.10m深处的温度,冰层的最低温度和底部冰床温度随海拔而垂直变化的梯度分别为-0.83℃·100m-1,-0.68℃·100m-1,-0.79℃·100m-1,与气温正常的垂直变化梯度大致相当.

关键词: 慕士塔格, 冰层温度, 温度梯度

Abstract: Borehole temperatures were measured at the ice-core drilling site ((7010) m a. s. l.) in the Muztag Ata Glacier in August 2003. The borehole-temperature profile shows a warm type at the end of summer. The ice temperature profile ((-26.17)~(-25.63)℃) and its minimum ((-26.17)℃) at this altitude are all the lowest among those measured in the mountain glaciers in the middle-low latitudes, and so is the temperature at the glacier bed. The temperature at the bedrock is (-25.73)℃, demonstrating that the Muztag Ata Glacier is frozen to its bed. From the measurement, the altitude effect on the ice temperature is very clearly. From (6250) m a. s. l. to (7010) m a. s. l., the lapse rates of ice temperature at 10 m depth, the minimum ice temperature and the temperature at bedrock are (-0.83)℃\5100 m-1, (-0.68)℃\5100 m-1 and (-0.79)℃\5100 m-1, respectively. These lapse rates are consistent with normal air temperature lapse rate ((-0.65)℃\5100 m-1).

Key words: Muztag Ata, borehole temperature, lapse rate

中图分类号: 

  • P343.6