祁连山小冰期冰碛垄差分GPS测量及其地貌意义  

The Differential GPS Surveying on the Little Ice Age Moraines in the Qilian Mountains and Its Geomorphology Significance

作　　者：刘斌[1,2] 易朝路[1] 王宁练[3] 李艳军[1,2] 胡恩[1,2] 傅平[1] 

机构地区：[1]中国科学院青藏高原研究所,北京100085 [2]中国科学院研究生院,北京100049 [3]中国科学院寒区旱区与环境工程研究所,甘肃兰州730000

出　　处：《冰川冻土》2009年第5期945-952,共8页Journal of Glaciology and Geocryology

基　　金：中国科学院知识创新工程重要方向性项目(KZCX2-YW-104;KZCX2-YW-310);国家重点基础研究发展计划(973计划)项目(2005CB422003);国家杰出青年科学基金项目(40525001)资助

摘　　要：小冰期冰碛垄形态特征受到众多因素的影响,采用后差分GPS测量方法对祁连山东段、中段共6条冰川的小冰期冰碛垄形态进行了实地测量与研究,其中3条冰川朝北,3条冰川朝南,得到了关于小冰期冰碛垄有关面积、表面积、体积等较详细的参数.结果表明:祁连山小冰期冰碛垄的规模具有从东到西逐渐减小的趋势,最东段冷龙岭7号冰川小冰期冰碛垄规模最大,面积为11.4×105m2,表面积为13.8×105m2,体积为11.8×107m3;规模最小的为最西边的团结峰3号冰川小冰期冰碛垄,其面积为1.9×105m2,表面积为2.67×105m2,体积为1.36×107m3.祁连山地区而言,区域气候差异很可能是造成小冰期冰碛垄规模差异的主要因素.The geomorphology features of Little Ice Age moraines are affected by many factors. Six Little Ice Age moraines in the eastern and middle sections of the Qilian Mountains were measured by differential GPS. Three of them face north and the rest face south. Detailed parameters are gotten, such as, area, surface area, volume and other parameters of the Little Ice Age moraines. Research shows that the scale of Little Ice Age moraines reduced gradually from east to west in the Qilian Mountains. The largest one is the Little Ice Age moraine of Glacier No. 7 that is located in the most eastern section of the Lenglong Range, with an area of 11.4×10^5m^2, a surface area of 13.8×10^5m^2 and a volume of 11.8×10^7m^3. The smallest one is the Little Ice Age moraine of Glacier No. 3 in Mount Tuanjie that is located in the most western section of the Qilian Mountains, with an area of 1.9×10^5m^2, a surface area of 2.67 ×10^5m^2, and a volume of 1.36×10^7m^3. As for the Qilian regions, based on a comprehensive analysis on the climatic conditions, lithology and other factors of the above-mentioned six glaciers, it is believed that the local climate difference is likely the major factor that controls the scale of Little Ice Age moraine.

关 键 词：小冰期 冰碛垄 后差分GPS 影响因素 

分 类 号：P931.4[天文地球—自然地理学]