| 近30 a来托木尔峰南麓科其喀尔冰川冰舌区变化 |
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| 引用本文： | 谢昌卫,丁永建,刘时银,李宾,朱国才.近30 a来托木尔峰南麓科其喀尔冰川冰舌区变化[J].冰川冻土,2006,28(5):672-677. |
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| 作者姓名： | 谢昌卫 丁永建 刘时银 李宾 朱国才 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000;新疆公路规划勘察设计研究院,新疆,乌鲁木齐,830006 |
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| 基金项目： | 国家自然科学基金
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中国科学院知识创新工程项目 |
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| 摘 要： | 20世纪80年代中期以来,托木尔峰南麓地区冰雪融水量明显增加,冰川处于强烈的消融退缩状态.根据对科其喀尔冰川冰舌区不同海拔探测表明,近30 a来冰川厚度明显减薄,冰舌区平均厚度减薄在0.5~1.5 m.a-1之间.对科其喀尔冰川末端位置研究表明,科其喀尔冰川进入20世纪90年代以来处于比较强烈的退缩状态.相对于1974年的冰川位置,冰川退缩了380 m左右.科其喀尔冰川的全面退缩,标志着托木尔峰地区冰川处于全面的负物质平衡状态.
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| 关 键 词： | 厚度变化 冰川末端变化 冰舌区 科其喀尔冰川 |
| 文章编号： | 1000-0240(2006)05-0672-06 |
| 修稿时间： | 2006年1月26日 |
Variation of Keqikaer Glacier Terminus in Tomur Peak during Last 30 Years |
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| XIE Chang-wei,DING Yong-jian,LIU Shi-yin,LI Bing,ZHU Guo-cai.Variation of Keqikaer Glacier Terminus in Tomur Peak during Last 30 Years[J].Journal of Glaciology and Geocryology,2006,28(5):672-677. |
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| Authors: | XIE Chang-wei DING Yong-jian LIU Shi-yin LI Bing ZHU Guo-cai |
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| Abstract: | Using radio echo sounder,ice thickness of the Keqikaer Glacier tongue was measured in 1981 and 2004,respectively.In this paper the changes of thickness and advance/retreat of Keqikaer Glacier is studied from comparing topographical maps, aerial photos and satellite images obtained at different time.Results indicated that the Keqikaer Glacier has retreated since the 1990s and become thinner since the 1980s.Thickness of the ice tongue has decreased with a speed of 0.5~1.5 m5a~(-1) since 1981.The shrinkage of the glacier terminus is less than 2% of the total length during the last 30 years.The retreat of terminus position and the thinning of ice thickness give significant information that glaciers on the south slopes of Tomur Peak are decreasing intensively in the recent time. |
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| Keywords: | radio-echo sounding terminus change ice tongue Keqikaer Glacier |
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