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近50年来天山乌鲁木齐河源1号冰川平衡线高度对气候变化的响应
  • ISSN号：0023-074X
  • 期刊名称：科学通报
  • 时间：2013.1.10
  • 页码：825-832
  • 分类：P343.6[天文地球—水文科学;天文地球—地球物理学] TQ051.81[化学工程]
  • 作者机构：[1]State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • 相关基金：The authors would like to thank three anonymous reviewers for their con- structive suggestions, and thank Prof. Chen Rensheng for his suggestionson mathematic model. This work was supported by the National Natural Science Foundation of China （41121001 and 41171053） and the China Postdoctoral Science Foundation （2012M512049）.
  • 相关项目：冰冻圈与全球变化
作者： 董志文|秦大河|任贾文|李开明|李忠勤|
关键词： 乌鲁木齐, 平衡线, 冰川, 空气温度, 气候变化, ELA, 年降水量, 提升速度, Tianshan Mountains, Urumqi Glacier No.l, ELA, global warming
中文摘要：

冰河 ELA 是反映气候变化的重要参数之一。在 Tianshan 山基于 Urumqi 冰河 No.1 的平衡线高度(ELA ) 的观察，我们建立了在影响因素的 ELA 和它的专业，之间的一个统计模型温暖的季节空气温度(为 5 月， 6 月， 7 月和 8 月的空气温度一般水准) 和年度降水。结果显示出那，温暖的季节空气温度是影响 ELA 变化的领先的气候的因素。冰河 ELA 上升(下降) 61.7 m 什么时候由 1o 温暖季节空气温度增加(减少)

英文摘要：

The glacier ELA is one of the important parameters reflecting climate change. Based on observations of the equilibrium line alti- tude （ELA） of Ururnqi Glacier No.1 in the Tianshan Mountains, we established a statistical model between ELA and its major influencing factors, warm season air temperature （air temperature averages for May, June, July and August） and annual precipita- tion. Result showed that, warm season air temperature was the leading climatic factor influencing ELA variations. The glacier ELA ascends （descends） 61.7 m when warm season air temperature increases （decreases） by I~C, and ascends （descends） 13.1 m when cold season precipitation decreases （increases） by 10%. In the period 1959-2008, the glacier ELA showed a general in- creasing trend, ascendingl08 m and reaching its highest altitude in 2008 at 4168 m a.s.l., close to the glacier summit. If future climate is similar to that in the past 50 years, the ELA of Urumqi Glacier No. 1 will still ascend with a speed of 2.16 m/a. However If future climate is similar to that in the period 2000-2008, the ELA will still ascend with a speed of 6.5 m/a before it is stable. As a result of ELA variation, the accumulation area ratio （AAR） of the glacier showed a decreasing trend during the past 50 years.

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
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  • 被引量:81792