天山乌鲁木齐河源1号冰川成冰带分布特征的再研究  

Further Study of Ice Formation Zones on the Glacier No.1 at therümqi River Headwaters,Tianshan Mountains

作　　者：李向应[1] 丁永建[1] 刘时银[1] 李晶[1] 李忠勤[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/寒旱区流域水文与应用生态实验室,甘肃兰州730000

出　　处：《冰川冻土》2008年第1期93-99,共7页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金项目(4057103440601022);中国科学院知识创新工程重要方向项目(KZCX2-YW-301);科技部科技基础性工作专项项目(2006FY110200);国家重点基础研究发展计划(973计划)项目(2007CB411500)资助

摘　　要：通过分析2006年获取的43个雪坑和2004年的28个雪坑资料,对乌鲁木齐河源1号冰川成冰带的分布特征进行了再研究.结果表明:1号冰川东、西支消融带和渗浸-冻结带界限(平均值)分别位于海拔4068 m和4086 m,渗浸-冻结带和渗浸带的界限分别位于海拔4086 m和4122 m处;东、西支顶部的渗浸-冻结带和渗浸带界限分别位于海拔4184 m和4435 m处.与20世纪80年代末相比,1号冰川的成冰带谱整体上移,成冰带界限达到各研究时期的最高,且东支的变化幅度大于西支;消融带和冰川顶部的渗浸-冻结带面积增大,渗浸带和冰川中部的渗浸-冻结带面积缩小.Further study of the ice formation zones have been done by using 28 snow pits in 2004 and 43 snow pits in 2004 on the Glacier No. 1. The boundaries between the ablation zone and the superimposed-ice zone were situated at 4 068 m and 4 086 m at east and west branches, respectively, and those between the superimposed-ice zone and the percolation zone were located at 4 086 m and 4 122 m at east and west branches, respectively. The boundaries between the superimposed-ice zone on the summit and the percolation zone were located at 4 184 m and 4 435 m at the east and west branches, respectively. The ice formation zones on the Glacier No. 1 is moving up, and the boundaries between ice formation zones reached a higher level, the variation amplitude in the east branch is higher than that in the west branch; the areas of the superimposed-ice zone on the summit of the glacier and the ablation zone have decreased, and the areas of the superimposed-ice zone in the middle of the glacier and of the percolation zone have increased.

关 键 词：成冰带 1号冰川 乌鲁木齐河源 

分 类 号：P343.6[天文地球—水文科学]