青藏高原中部双湖羌塘1号冰川厚度特征及冰储量估算  

The Qiangtang Glacier No. 1 in the middle of the Tibetan Plateau: Depth sounded by using GPR and volume estimated

作　　者：朱大运[1] 田立德[2,3] 王建力[1,4] 崔江鹏 

机构地区：[1]西南大学地理科学学院,重庆400715 [2]中国科学院青藏高原研究所青藏高原环境变化与地表过程重点实验室,北京100085 [3]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 [4]西南大学三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《冰川冻土》2014年第2期278-285,共8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(2010CB951702);国家自然科学基金项目(41025002);中国科学院青藏高原专项(XDB03030000)资助

摘　　要：冰川冰贮量的大小与变化对河流与湖泊水的影响是当前关注的热点科学问题之一.根据青藏高原中部双湖地区羌塘1号冰川2011、2013年探地雷达测量数据和差分GPS定位结果,分析探讨了羌塘1号冰川横、纵剖面厚度特征,并在GIS技术的支持下,绘制了冰川厚度等值线,对冰川储量进行了估算.结果表明:羌塘1号冰川作用强烈,横剖面呈典型的"U"形发育,底部宽阔平坦.纵剖面从下往上缓慢抬升,坡度较小,下伏地形平坦,无明显突兀变化,与冰川表面具有很好的一致性.经计算整条冰川平均厚度51.28 m,最厚处132.15 m,冰体储量0.1236 km3.Glacier, named solid reservoir, is an important water resource. Glacier change and its impact on riv- ers and lakes is one of the hot scientific issues of current concern. Based on the GPR sounding on the Qiangtang Glacier No. 1 in Shuanghu of the Tibetan Plateau in 2011 and 2013 and the differential GPS positioning results, in this paper, the features and the depths of underlain terrain are analyzed and discussed. A contour map of glac- ier thickness is drawn and the glacier reserve is estimated under the support of GIS technology. It is found that the effect of the Qiangtang Glacier No. 1 is very strong ： its cross-section develops a typical ＂U＂ shape with a wider bottom; its longitudinal profile changes slowly with a small slope and the underlain terrain shows a good agreement with glacier surface without significant incongruity. The average thickness of the glacier is 51.28 m, with the maximum thickness of 132.15 m and ice storage of 0. 1236 km^3.

关 键 词：冰川厚度 冰储量 雷达测厚 羌塘1号冰川 

分 类 号：P343.6[天文地球—水文科学]