Characterization of recent glacier decline in the Cordillera Real by LANDSAT, ALOS, and ASTER data
Characterization of recent glacier decline in the Cordillera Real by LANDSAT, ALOS, and ASTER data
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通过 LANDSAT、ALOS 和 ASTER 数据描述雷亚尔山脉近期冰川衰退的特征
DOI：
10.1016/j.rse.2013.06.010
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发表时间：
2013
影响因子：
13.5
通讯作者：
Fabiola Ledezma
中科院分区：
文献类型：
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作者：
Tong Liu;T. Kinouchi;Fabiola Ledezma
1987年至2010年期间玻利维亚安第斯山脉真实的科迪勒拉（南纬16.2度，西经68.2度）冰川规模的变化是使用无云陆地卫星TM和ALOS AVNIR-2数据通过波段比法确定的。从1987年到2010年，真实的科迪勒拉冰川覆盖面积减少了30%以上。在过去五年中，安第斯地区冰川化面积的缩小速度，特别是冰川的缩小速度，大大加快。为了表征冰川化区域的变化，引入了一个变化因子来捕获地形因素的影响，包括海拔、坡度角和方位，这些地形因素是使用ASTER 30 m全球DEM数据对Huayna Potosi、Mururata、Charquini、Illimani和Serkhe Khollu冰川进行识别的。本文还进一步分析了瓦依纳波托西冰川，讨论了其面积随海拔、坡度、坡向变化的不均匀性，以及太阳辐射的分布。
The changing sizes of glaciers in the Cordillera Real (16.2°S, 68.2°W), Bolivian Andes, between 1987 and 2010 were determined by a band ratio method using cloud-free LANDSAT TM and ALOS AVNIR-2 data. From 1987 to 2010, glacier-covered areas in the Cordillera Real were found to have diminished by more than 30%. The rate of glacierized area shrinkage within this Andean region, and particularly of its glaciers, has significantly increased in the past 5 years. To characterize the change in glacierized area, a changing factorkwas introduced to capture the effects of topographic factors, including elevation, slope angle, and aspect as identified using ASTER 30-m Global DEM data on the Huayna Potosi, Mururata, Charquini, Illimani, and Serkhe Khollu glaciers. This study also further analyzed the Huayna Potosi glacier and discussed the inhomogeneity of changes in its area with elevation, slope, aspect, and the distribution of solar radiation.
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