冰川运动速度影响因子的强度分析——以祁连山七一冰川为例  

Analysis on the Influencing Factors of Glacier Flow Velocity:A Case Study of Qiyi Glacier in Qilian Mountains

作　　者：井哲帆[1] 刘力[1] 周在明[2] 邓宇峰[1] 

机构地区：[1]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 [2]中国地质科学院,北京100037

出　　处：《冰川冻土》2011年第6期1222-1228,共7页Journal of Glaciology and Geocryology

基　　金：全球变化研究国家重大科学研究计划项目(2010CB951404);国家自然科学基金项目(41071043)资助

摘　　要：以冰川形态因子变量(面积、长度和厚度),气候条件因子变量(年气温、降水),以及年物质平衡量等作为影响因素,采用通径分析方法研究了祁连山七一冰川1958-2007年间年际运动速度的影响因子强度.结果表明:冰川形态对运动速度的影响强度最大,物质平衡的影响次之,而气候条件的影响最弱.在这些影响因素中冰川面积和厚度对运动速度的影响较为显著,其直接和间接的通径系数分别是6.56、4.71和19.29、13.57.为认识冰川运动速度的内外影响因素提供了科学参考依据.Glacier shape factors（area,length and thickness）,climate factors（air temperature and precipitation）,mass balance and other influencing factors of the Qiyi Glacier and their influencing intensity during 1958-2007 were analyzed with the application of the path analysis method.Results indicate that glacier flow velocity is mainly influenced by the glacier shape,and then the mass balance and the climate condition.Among all the influencing factors,glacier area and thickness are the most significant ones,the direct and indirect path coefficients were 6.56,4.71,19.29 and 13.57,respectively.The research provides references for further understanding the glacier flow velocity and its influencing factors.

关 键 词：运动速度 影响因子 通径分析 祁连山 七一冰川 

分 类 号：P343.6[天文地球—水文科学]