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冰川冻土 ›› 2015, Vol. 37 ›› Issue (3): 595-603.doi: 10.7522/j.issn.1000-0240.2015.0067

• 冰冻圈与全球变化 • 上一篇    下一篇

祁连山摆浪河全新世冰量变化初探

吴家章1,2, 易朝路1, 许向科1, 乔宝晋1,2, 刘宇硕3   

  1. 1. 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;
    2. 中国科学院大学, 北京 100049;
    3. 中国科学院 寒区旱区环境与工程研究所, 甘肃 兰州 730000
  • 收稿日期:2014-09-05 修回日期:2015-01-20 出版日期:2015-06-25 发布日期:2015-09-29
  • 通讯作者: 易朝路, E-mail: clyi@itpcas.ac.cn. E-mail:clyi@itpcas.ac.cn
  • 作者简介:吴家章(1987-), 男, 浙江丽水人, 2012年在中国科学院青藏高原研究所获硕士学位, 现主要从事第四纪冰川地貌研究. E-mail: jiazhang682575@126.com
  • 基金资助:
    国家自然科学基金项目(40971017;40730101)资助

First exploration of the ice volume variations during the Holocene in the Bailanghe River basin, Qilian Mountains

WU Jiazhang1,2, YI Chaolu1, XU Xiangke1, QIAO Baojin1,2, LIU Yushuo3   

  1. 1. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085;
    2. University of Chinese Academy of Sciences, Beijing 100049;
    3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2014-09-05 Revised:2015-01-20 Online:2015-06-25 Published:2015-09-29

摘要: 采用祁连山老虎沟12号冰川2009年RTK测量生成的数字高程模型(DEM), 建立现代冰川表面横截面拟合的二次方程, 结合差分GPS测量的冰碛垄形态, 运用于祁连山摆浪河上游14号冰川和16号冰川全新世以来冰量变化的估算. 结果表明: 新冰期以来冰储量减少0.38 km3, 小冰期以来14号冰川和16号冰川的冰储量分别减少0.016 km3和0.047 km3; 根据祁连山全新世各个时期最大冰川范围的时间, 估计了全新世以来14号和16号冰川冰储量的减少速率, 新冰期以来为12.2×10-5~15.0×10-5 km3·a-1, 小冰期以来分别为4.0×10-5~5.3×10-5 km3·a-1, 11.75×10-5~15.7×10-5 km3·a-1.

关键词: 祁连山, 摆浪河, 冰碛地貌, 全新世, 冰量变化

Abstract: By using the Laohugou Glacier No.12 digital elevation model derived from measurement, a series of transverse profiles on the Laohugou Glacier No.12 surface were fitted with quadratic equations, then combined with differential GPS measuring moraine ridge forms, the ice volume variations since the Holocene of the Glaciers No.14 and No.16, which lay on the headwaters of the Bailanghe River, were estimated. The results show that the ice volume have decreased 0.38 km3 since the Neoglaciation, Glaciers No.14 and No.16 have decreased 0.016 km3and 0.047 km3, respectively, during the Little Ice Age. According to the time of the maximum glaciation in different periods of the Holocene in the Qilian Mountains, the velocity of the ice volume shrinkage of Glaciers No.14 and No.16 since the Holocene are estimated to be 12.2×10-5~15.0×10-5 km3·a-1 since the Neoglaciation, and 4.0×10-5~5.3×10-5 km3·a-1 and 11.75×10-5~15.7×10-5 km3·a-1, respectively, since the Little Ice Age.

Key words: Qilian Mountains, Bailanghe River, moraine topography, Holocene, ice volume variation

中图分类号: 

  • P343.6