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Alpine Glacier Change in the Eastern Altun Mountains of Northwest China during 1972-2010

机译:1972 - 2010年西北阿尔金山东部高山冰川变化

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摘要

Accurately mapping and monitoring glacier changes over decades is important for providing information to support sustainable use of water resource in arid regions of northwest China. Since 1970, glaciers in the Eastern Altun Mountains showed remarkable recession. Further study is indispensable to indicate the extent and amplitude of glacial change at basin and individual glacier scale. In this study, spatiotemporal glacier changes referring to the year 1972, 1990, 2000 and 2010 were studied for the Eastern Altun Mountains using Landsat MSS/TM/ETM+ images and glacier volume-area scaling. The results demonstrated that the total area and volume of glaciers in EAMs decreased significantly by 10.70 +/- 0.57 km(2) (19.56 +/- 10.41%) and 0.61 +/- 0.03 km(3) (23.19 +/- 11.40%) during 1972-2010, respectively. More than half of the total receding area occurred during 1990-2000, primarily due to higher temperature increasing. However, varied response of individual glaciers indicated that glacier change was also affected by glacier dynamics, which was related to local topography. In addition, five glaciers unrecorded in the glacier inventory of China were reported in this study.
机译:准确绘制和监测数十年来的冰川变化,对于提供信息以支持中国西北干旱地区的水资源可持续利用至关重要。自1970年以来,东部阿尔敦山脉的冰川出现了明显的衰退。必须进行进一步的研究以表明盆地和单个冰川规模的冰川变化的程度和幅度。在这项研究中,使用Landsat MSS / TM / ETM +影像和冰川体积-面积换算研究了东部阿尔敦山脉1972、1990、2000和2010年的时空冰川变化。结果表明,EAM中冰川的总面积和体积显着下降了10.70 +/- 0.57 km(2)(19.56 +/- 10.41%)和0.61 +/- 0.03 km(3)(23.19 +/- 11.40% )分别在1972-2010年期间进行。总退耕面积的一半以上发生在1990-2000年之间,这主要是由于温度升高所致。但是,单个冰川的不同响应表明,冰川变化也受到冰川动力学的影响,这与局部地形有关。此外,本研究还报告了中国冰川存量中未记录的五个冰川。

著录项

  • 作者

    Yu X. Y.; Lu, C. H.;

  • 作者单位
  • 年度 2015
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  • 原文格式 PDF
  • 正文语种 英语
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