慕士塔格冰芯钻孔温度测量结果  

Ice-core Borehole Temperature in the Muztag Ata, East Pamirs

作　　者：邬光剑[1] 姚檀栋[1] 徐柏青[1] 李真[1] 保翰璋 

机构地区：[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

出　　处：《冰川冻土》2003年第6期676-679,共4页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金创新群体项目(40121101);国家自然科学基金重点项目(90102005);科技部基础研究重大项目前期研究专项(2001CCB00300)资助

摘　　要：2002年8月对慕士塔格冰川累积区海拔6300m左右的两根冰芯钻孔(其中一根达到冰川底部基岩)进行了温度测量,揭示了该处冰川的温度分布特征.结果表明:慕士塔格冰芯的冰温是目前中低纬地区山地冰川中最低的,达-21.79℃,该最低温度出现的位置在35m以下;冰床底部的温度为-20.76℃,也远低于其它山地冰川的冰床温度.极低的温度对成冰过程有重要影响,并有利于获得可靠的冰芯记录.In August 2002, temperatures of two ice-core boreholes (one borehole reached to the bedrock) at the altitudes of 6350 m (Core 2) and 6250 m (Core 3) a.s.l. in the Muztag Ata were measured by using a thermistor. It is found that the ice temperature in the Muztag Ata is the lowest among all the mountain ice cores in the middle-low latitudes. The measured minimum temperature is -21.79 ℃ at the depth of 35 m for Core 2, and -20.91 ℃ at the depth of 55 m for Core 3. The bedrock temperature is about -20.76 ℃ at the altitude of 6350 m, which is by far lower than others. Lower temperature has a significant effect on ice core record and favors the preservation of climate information.

关 键 词：慕士塔格 冰芯钻孔 温度测量 冰川温度 

分 类 号：P343.6[天文地球—水文科学]