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冰川冻土 ›› 2019, Vol. 41 ›› Issue (3): 516-524.doi: 10.7522/j.issn.1000-0240.2019.0067

• 冰冻圈与全球变化 • 上一篇    下一篇

西藏阿里地区嘎尼冰川厚度特征及冰储量估算

靳胜强1,2,田立德1,2   

  1. 1.中国科学院 青藏高原研究所,北京 1000852.中国科学院大学,北京 100049
  • 收稿日期:2018-11-09 修回日期:2019-01-29 出版日期:2019-06-25 发布日期:2019-09-10
  • 通讯作者: 田立德,E-mail: ldt@itpcas.ac.cn,ldtian@ynu.edu.cn E-mail:ldt@itpcas.ac.cn,ldtian@ynu.edu.cn
  • 作者简介:靳胜强(1989-),男,河南新乡人,2015年在河南财经政法大学获学士学位,现为中国科学院青藏高原研究所在读硕士研究生,从事冰川变化研究. E-mail: jinshengqiang@itpcas.ac.cn
  • 基金资助:
    国家自然科学基金项目(41530748)资助

GPS depth sounding and ice volume estimating in the Gani Glacier in Ngari Prefecture, Tibet

JIN Shengqiang1,2, TIAN Lide1,2   

  1. 1.Institute of Tibetan Plateau Research, Chines Academy of Sciences, Beijing 100085, China;   2.University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-11-09 Revised:2019-01-29 Online:2019-06-25 Published:2019-09-10

摘要: 冰川厚度和冰下地形是冰川学研究中相当宝贵的数据。2018年5月,利用探地雷达(GPR)对西藏阿里地区喀喇昆仑山脉南部的嘎尼冰川进行了冰川厚度测量。基于ArcGIS中的地统计分析模块,运用Kriging插值方法对冰川非测厚区进行插值计算,结合差分GPS数据、遥感影像数据和地形数据,分析了嘎尼冰川横、纵剖面厚度特征,绘制了冰川冰下地形图和冰川厚度分布图,并估算了该冰川冰储量。结果表明:嘎尼冰川冰下地形存在空间差异,东支冰下地形起伏较大,西支相对平缓,冰川作用以下蚀作用为主,冰川面积为4.31 km2,平均厚度51.2 m,最大厚度出现在东支海拔5 970 m处,约为136.6 m,冰储量为0.218 km3

关键词: 青藏高原, 嘎尼冰川, 探地雷达, 冰川厚度, 冰储量

Abstract: Glacial thickness and subglacial topography are quite valuable data. In May 2018, the pulse EKKO PRO Ground Penetrating Radar (GPR) was used to sound the ice thickness of Gani Glacier, which is in the southern Karakoram Mountains in Ngari Prefecture of Tibet. Combined with differential GPS data, remote sensing image data and topographic data, spatial distribution of glacial thickness was calculated by Kriging interpolation method. The thickness characteristics of transverse and longitudinal profiles of GPR lines were analyzed. Subglacial topographic map of the glacier was drawn, together with ice depth distribution, and ice volume was estimated. It was found that subglacial topographic has spatial differences, rugged in the east branch, but relatively gentle in the west branch. Glaciation is mainly characterized by down cutting; the glacierized area is 4.31 km2; the average depth of the glacier is 51.2 m and the maximum ice depth is 136.6 m at 5 970 m a.s.l., which is in the east branch of the glacier; the ice volume is 0.218 km3.

Key words: Tibetan Plateau, Gani Glacier, GPR, ice depth, ice volume

中图分类号: 

  • P343.6