祁连山七一冰川雷达测厚及冰储量估算

Ice thickness measurements and volume calculation of Qiyi Glacier in Qilian Mountains

冰厚分布和冰储量是冰川水资源、冰川变化和冰川动力学模拟研究的基础数据。本文基于七一冰川冰厚度雷达测量结果,结合GPS位置数据、遥感数据和冰川地形数据,运用协同克里金空间插值算法,绘制了冰厚分布图和冰床地形图,并运用厚度积分法估算了冰川冰储量。2015年七一冰川的面积为2.517km^(2),平均冰厚和冰储量分别为44.9m和0.1129km^(3),实测最大冰厚为115m。海拔4 480~4 600m和海拔4 640~4 800m是七一冰川两个冰厚值较大的区域,平均冰厚分别为88m和97m。

Ice thickness distribution and ice volume are the basics of glaciological research. In order to obtain the ice thickness distribution and ice volume of this glacier,the ground-penetrating radar(GPR)was used to probe the ice thickness of Qiyi Glacier in August2015. In this paper,we integrated GPS location data,glacier topographic data,and remote sensing data,using a co-kriging spatial interpolation algorithm,to retrieve the ice thickness distribution map and ice bed topography of the glacier. The thickness integration method was used to estimate the ice volume. The results show that the area of Qiyi Glacier in2015 was2.517 km^(2),and the average ice thickness and ice volume were44.9 m and0.1129 km^(3),respectively. The measured maximum ice thickness was115 m. The regions within the altitude range of4 480 to4 600 m and altitude of4 640 to4 800 m have larger ice thicknesses on Qiyi Glacier,where the average ice thicknesses are88 m and97 m,respectively.