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Distribution of Borehole Temperature at Four High-altitude Alpine Glaciers in Central Asia 被引量:3

Distribution of Borehole Temperature at Four High-altitude Alpine Glaciers in Central Asia
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摘要 The distribution of borehole temperature at four high-altitude alpine glaciers was investigated. The result shows that the temperature ranges from -13.4℃ to -1.84℃, indicating the glaciers are cold throughout the boreholes. The negative gradient (i.e., the temperature decreasing with the increasing of depth) due to the advection of ice and climate warming, and the negative gradient moving downwards relates to climate warming, are probably responsible for the observed minimum temperature moving to lower depth in boreholes of the Gyabrag glacier and Miaoergou glacier compared to the previously investigated continental ice core borehole temperature in West China. The borehole temperature at 10m depth ranges from -8.0℃ in the Gyabrag glacier in the central Himalayas to -12.9℃ in the Tsabagarav glacier in the Altai range. The borehole temperature at 10 m depth is 3-4 degrees higher than the calculated mean annual air temperature on the surface of the glaciers and the higher 10 m depth temperature is mainly caused by the production of latent heat due to melt-water percolation and refreezing. The basal temperature is far below the melting point, indicating that the glaciers are frozen to bedrock. The very low temperature gradients near the bedrock suggest that the influence of geothermal flux and ice flow on basal temperature is very weak. The low temperature and small velocity of ice flow of glaciers are beneficial for preservation of the chemical and isotopic information in ice cores.
出处 《Journal of Mountain Science》 SCIE CSCD 2009年第3期221-227,共7页 山地科学学报(英文)
基金 funded by the National Natural Science Foundation of China (Grant No. 40825017) the Chinese Academy of Sciences(Grant No. KZCX3-SW-344 and 100 Talents Project)
关键词 Borehole temperature GLACIER CentralAsia Climate warming 温度范围 钻孔深度 高海拔 冰川 高山 中亚 气候变暖 喜马拉雅山
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  • 1黄茂桓,周韬,井晓平,王文悌.乌鲁木齐河源1号冰川2号冰洞的冰川学研究[J].冰川冻土,1994,16(4):289-300. 被引量:17
  • 2蒲健辰,姚檀栋,张寅生,濑古胜基,藤田耕史.冬克玛底冰川和煤矿冰川的物质平衡(1992/1993年)[J].冰川冻土,1995,17(2):138-143. 被引量:17
  • 3蔡保林 黄茂桓.乌鲁木齐河源1号冰川深孔温度的初步研究[J].科学通报,1987,32(22):1732-1733.
  • 4王立伦.敦德冰帽温度状况的研究.第四届全国冰川冻土学术会议论文选集(冰川学)[M].北京:科学出版社,1990.41-48.
  • 5任贾文 张金华 等.天山乌鲁木齐河源1号冰川温度研究[J].冰川冻土,1985,7(2):141-152.
  • 6黄茂桓 王仲祥 等.我国冰川的温度[J].冰川冻土,1982,4(1):20-28.
  • 7中国科学院冰川冻士研究所.中国冰川目录,Ⅲ,天山山区(东部散流内流区)[M].北京,科学出版社,1986:1-72.
  • 8王立伦.敦德冰帽温度状况的研究[C]// 第四届全国冰川冻士学术会议论文选集.北京:科学出版社,1990:41-48.
  • 9Thompson L G,Yao T,Mosley-Thompson E A,et al.High resolution millennial record of the South Asian Monsoon from Himalayan Ice Core[J].Science,2000,289:1916-1919.
  • 10任贾文.天山博格达峰扇状分流冰川的冰层温度[J].冰川冻士,1983,5(3):83-89.

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