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冰川冻土 ›› 2017, Vol. 39 ›› Issue (6): 1212-1220.doi: 10.7522/j.issn.1000-0240.2017.0326

• 冰冻圈与全球变化 • 上一篇    下一篇

玉龙雪山白水河1号冰川消融期表面流速特征分析

燕兴国1,2, 何元庆1,2, 张松林1, 牛贺文1,2, 朱国峰1, 王世金2, 蒲涛2, 史晓宜3, 石晓非3, 齐翠姗3   

  1. 1. 西北师范大学 地理与环境科学学院, 甘肃 兰州 730070;
    2. 中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室, 甘肃 兰州 730000;
    3. 兰州大学 资源环境学院 西部环境教育部重点实验室, 甘肃 兰州 730000
  • 收稿日期:2017-02-02 修回日期:2017-10-19 出版日期:2017-12-25 发布日期:2018-04-03
  • 通讯作者: 何元庆,E-mail:yqhe@lzb.ac.cn;张松林,E-mail:hxb@lzb.ac.cn. E-mail:yqhe@lzb.ac.cn;hxb@lzb.ac.cn
  • 作者简介:燕兴国(1993-),男,甘肃定西人,2015年在西北师范大学获学士学位,现为西北师范大学在读硕士研究生,从事冰川变化研究.E-mail:18298336404@163.com
  • 基金资助:
    科技部基础性工作专项(2013FY111400-6);中国科学院重点部署项目(KJZD-EW-G03-04);国家自然科学青年基金项目(41601071);冰冻圈科学国家重点实验室自主课题项目(SKKLCS-ZZ-2016)资助

Analysis of surface flow velocity on the Baishui Glacier No.1 during ablation period in the Yulong Mountain

YAN Xingguo1,2, HE Yuanqing1,2, ZHANG Songlin1, NIU Hewen1,2, ZHU Guofeng1, WANG Shijin2, PU Tao2, SHI Xiaoyi3, SHI Xiaofei3, QI Cuishan3   

  1. 1. Geography and Environmental Science College of Northwest Normal University, Lanzhou 730070, China;
    2. State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    3. College of Earth Environmental Sciences, Lanzhou University, Lanzhou 730000, China
  • Received:2017-02-02 Revised:2017-10-19 Online:2017-12-25 Published:2018-04-03

摘要: 2016年7月15号在玉龙雪山白水河1号冰川表面布设了16根花杆(stakes),建立了冰川运动速率观测网;用TrimbleGeoXT型手持差分GPS对花杆位置坐标进行测量,获取了2016年7月-10月玉龙雪山白水河1号冰川花杆的观测数据,并分析其表面运动特征。结果表明:冰川运动速度方面,横剖面上由主流线附近向两侧变小;纵剖面上由末端到冰川粒雪盆逐渐减小,与一般山岳冰川的运动规律不同;冰川运动方向上,速度矢量大多沿主流线向下运动或者稍微偏离主流线一定方向;冰川的运动速度与冰川的消融速度变化不同步,相比之下运动速度的变化有一定的滞后性;强烈发育的冰裂隙分隔了两侧的冰体,影响了冰川的整体运动方式,使该冰川的运动方式较为特殊。冰川末端退缩速度不断加快且退缩趋势将持续。

关键词: 玉龙雪山, 白水河1号冰川, 消融期, 表面流速

Abstract: On July 15, 2016, 16 stakes were set up on the surface of the Baishui Glacier No.1 in Yulong Mountain, in order to establish a network for survey glacial movement velocity Handheld difference GPS, TrimbleGeoXT, was used to survey the positions of these stakes. The displacement data of these stakes, from July to October in 2016, were collected and analyzed. The results show that:(1) in a transverse profile the velocity of glacier flow was larger in the mainstream line than that in both sides; in a longitudinal profile, the velocity of glacier flow gradually decreased from the terminus to the firn basin, which was different with general mountain glaciers; in the direction of glacier movement, the velocity vector is mostly moving down along the mainstream line or slightly off the mainstream line; (2) the flow velocity of the glacier was not synchronized with the change of the ablation speed of the glacier, having a lag; (3) the strongly developed ice crevasses divided the ice bodies, affecting the overall flow of the glacier and making the flow of the glacier more special; (4) the retreat speed of the glacier terminal will continue to accelerate and the retreat trend will continue.

Key words: Yulong Mountain, Baishui Glacier No.1, ablation period, surface flow velocity

中图分类号: 

  • P343.6