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冰川冻土 ›› 1998, Vol. 20 ›› Issue (1): 9-13.

• 研究论文 • 上一篇    下一篇

天山乌鲁木齐河源1号冰川物质平衡对气候变化的敏感性研究

刘时银1, 丁永建1, 王宁练1, 谢自楚2   

  1. 1. 中国科学院兰州冰川冻土研究所, 兰州730000;
    2. 湖南师范大学资源环境系, 长沙410081
  • 收稿日期:1997-09-22 出版日期:1998-02-25 发布日期:2012-04-26
  • 基金资助:
    国家"九五"攻关计划(96-912-01-02)专题及国家自然科学基金项目(49571018),并得到国家科委特别项目国际冰川年计划的支持.

Mass Balance Sensitivity to Climate Change of the Glacier No.1 at the Urumqi River Head, Tianshan Mts.

LIU Shi-Yin1, DING Yong-Jian1, WANG Ning-Lian1, XIE Zi-Chu2   

  1. 1. Lanzhou Institute of Glaciology and Geocryology, CAS Lanzhou 730000;
    2. Department of Resources and Environment, Hunan Normal University, Changsha 410081
  • Received:1997-09-22 Online:1998-02-25 Published:2012-04-26

摘要: 应用度日物质平衡模式对天山乌鲁木齐河源1号冰川物质平衡及平衡线高度对气候变化的敏感性进行了研究。结果表明,位于大陆性气候区且具有暖季补给特征的乌鲁木齐河源1号冰川物质平衡对气候变化的敏感性要小于海洋性冰川,升温1℃或增加20%的降水可引起平衡线上升81m或下降31m.此外,气温与降水在物质平衡形成过程中的作用是不同的,气温引起物质平衡剖面以旋转方式变化,而降水可导致其平移方式的响应。若未来升温2℃时,即使降水增加30%,1号冰川向负平衡变化仍然不能得到遏制。

关键词: 1号冰川, 物质平衡, 平衡线高度, 敏感性

Abstract: In this paper the degree-day mass balance model is applied to the sensitivity test of mass balance /ELA to climate change of the Glacier No.1 at the Urumqi river head, Tianshan Mts. Results demonstrate that mass balance of a continental type glacier with warm season accumulation as the Glacier No.1 is less sensitive than that of a maritime type glacier. On the glacier air temperature rise of 1℃ or precipitation increase by 20% can cause the ELA shifting 81 m up or 31 m down. Air temperature and precipitation play different roles in mass balance, i.e. elevation-dependent mass balance follows the temperature variation by means of rotation against the elevation axis and it shifts parallel to precipitation change. Assuming a future temperature rise of 2 ℃ the minus mass balance trend of the glacier can not be reversed even if precipitation increases by 30%.

Key words: Glacier No.1, at the Urumqi river head, mass balance, equilibrium line altitude (ELA), sensitivity

中图分类号: 

  • P343.72