冰川运动速度对气候变化的响应——以天山乌鲁木齐河源1号冰川为例  

The Response of Glacier Velocity to Climate Change:A Case Study of Urumqi Glacier No.1

作　　者：周在明[1,2] 井哲帆[2] 赵淑惠[2] 韩添丁[2] 李忠勤[2] 

机构地区：[1]中国地质科学院,北京100037 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000

出　　处：《地球学报》2010年第2期237-244,共8页Acta Geoscientica Sinica

基　　金：国家重点基础研究"973"发展计划项目(编号:2007CB411501);中国科学院创新团队国际合作伙伴计划项目(编号:CXTD-Z2005-2);国家自然科学基金项目(编号:40871036)联合资助

摘　　要：山地冰川对气候变化的响应最为敏感,在全球变暖的大背景下山地冰川和极地冰盖正在发生显著的变化。冰川运动速度的变化是气候变化的结果之一。乌鲁木齐河源1号冰川是中国西部山地冰川的代表,本文以1981-2007年27a的运动速度资料与1982年以来的季节运动速度资料为基础,结合冰川物质平衡、气温、降水等资料分析冰川运动速度对气候变化的响应。研究发现,27a来1号冰川运动速度下降趋势明显,冬、夏季节运动速度波动较大,但夏季运动速度较大。气候变化通过冰川物质平衡的改变作用于冰川运动速度,物质平衡的持续亏损最终导致了冰川运动速度的持续降低。夏季的高温与降水对冰川运动速度具有加速的作用。Valley glacier is most sensitive to climate change under the background of global warming,and hence glaciers and ice caps of the world have changed significantly.Glacier movement is one of the results of climate variation.No.1 Glacier at the headwater of the Urumqi River is the representative of valley glaciers in western China.In this paper,based on 27 years＇（1981-2007） velocity data and seasonal velocity data in combination with glacier mass balance as well as temperature and precipitation data,the authors analyzed the response of the glacier movement to climate change.Researches show that in the 27 years the velocity tended to decrease obviously,seasonal velocity fluctuated considerably,and the velocity was higher in the summer than in the winter.Climate change acted on glacier movement by mass balance variation,and the uninterrupted loss of mass balance led to the continuous decrease of glacier velocity.It is also found that high temperature and high precipitation accelerated the glacier movement.

关 键 词：冰川 运动速度 物质平衡 气候变化 

分 类 号：P512.4[天文地球—地质学] P467