| 近50a来天山博格达峰地区四工河4号冰川表面高程变化特征 |
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| 引用本文： | 王璞玉,李忠勤,曹敏,李慧林,王飞腾,张明军.近50a来天山博格达峰地区四工河4号冰川表面高程变化特征[J].干旱区地理,2011,34(3). |
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| 作者姓名： | 王璞玉 李忠勤 曹敏 李慧林 王飞腾 张明军 |
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| 作者单位： | 1. 西北师范大学地理与环境科学学院,甘肃兰州730070;中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室/天山冰川站,甘肃兰州,730000
2. 西北师范大学地理与环境科学学院,甘肃兰州,730070 |
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| 基金项目： | 国家重点基础研究发展计划(2010CB951003); 中国科学院知识创新工程重要方向项目(KZCX2-YW-127); 国家自然科学基金项目(40631001;40571033;40701034;40371028;J0630966); 国家基金委创新群体项目(40121101)资助 |
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| 摘 要： | 基于GIS技术,利用GPS测量数据和1962年地形图分别建立两期DEM,通过对比重点研究了四工河4号冰川1962-2009年冰舌区的表面高程变化特征。结果表明:1962-2009年间,冰舌区平均减薄15±10 m,年均减薄约0.32±0.2 m,冰储量亏损达(14.3±9.5)×10-3km3,折合水当量(12.9±8.6)×10-3km3。不同海拔、坡度区间冰面高程变化差异显著,海拔较低、坡度较缓区域的变化最为强烈。在气候变暖的趋势下,四工河4号冰川发生强烈消融,标志着博格达峰地区的冰川正处于物质严重亏损的状态,直接影响到流域水资源状况。
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| 关 键 词： | 四工河4号冰川 博格达峰地区 冰面高程变化 GPS GIS |
Ice surface-elevation changes of Glacier No.4 of Sigong River in Bogda,Tianshan Mountains,during the last 50 years |
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| WANG Pu-yu,LI Zhong-qin,CAO Min,LI Hui-lin,WANG Fei-teng,ZHANG Ming-jun.Ice surface-elevation changes of Glacier No.4 of Sigong River in Bogda,Tianshan Mountains,during the last 50 years[J].Arid Land Geography,2011,34(3). |
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| Authors: | WANG Pu-yu LI Zhong-qin CAO Min LI Hui-lin WANG Fei-teng ZHANG Ming-jun |
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| Institution: | WANG Pu-yu1,2,LI Zhong-qin1,CAO Min1,LI Hui-lin1,WANG Fei-teng1,ZHANG Ming-jun1,2(1 College of Geography and Environment Science,Northwest Normal University,Lanzhou 730070,Gansu,China,2 State Key Laboratory of Cryospheric Sciences /Tianshan Glaciological Station,Cold and Arid Region Environment and Engineering Research Institute,CAS,Lanzhou 730000,China) |
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| Abstract: | Mountain glaciers are important water resources in the arid region and their mass loss or accumulation directly influence the water runoff.In addition,glaciers are one of potential climate indicators because they are sensitive to climate changes.Bogda is the biggest glaciation area in the eastern Tianshan Mountains and the glacier changes in this region directly influence water resources,living environment and other aspects,which have attracted wide attention of many researchers at home and abroad.Therefore... |
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| Keywords: | Glacier No 4 of Sigong River Bogda ice surface-elevation changes GPS GIS |
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