| 基于CryoSat-2数据的纳木那尼冰川冰面高程变化方法研究 |
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| 引用本文： | 程澍,熊章强,李新武,傅文学.基于CryoSat-2数据的纳木那尼冰川冰面高程变化方法研究[J].测绘与空间地理信息,2018(1):189-192. |
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| 作者姓名： | 程澍 熊章强 李新武 傅文学 |
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| 作者单位： | 中南大学 地球科学与信息物理学院,湖南 长沙,410083
中国科学院遥感与数字地球研究所,北京,100094 |
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| 摘 要： | 随着全球气候变暖,中亚地区大部分冰川逐渐变薄。高海拔山地冰川的变化会影响到周边地区的水资源和海平面变化,因此,我们需要高精度的地表高程观测数据来监测冰面高程变化。本文以喜马拉雅山脉西段的纳木那尼冰川为例,基于CryoSat-2卫星雷达高度计SARIn模式数据,修改了伪重复轨平面拟合方法,并计算了从2010年8月至2016年7月的冰面高程变化。纳木那尼冰面平均高程变化率为-0.47±0.44 m/year,整体呈现变薄趋势,与前人文献的结果基本一致,表明CryoSat-2数据在山地冰川使用伪重复轨平面方法估算高程变化有效可行。
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| 关 键 词： | 纳木那尼冰川 冰川高度变化 伪重复轨平面方法 DEM CryoSat-2 Naimona' Nyi glacier elevation change the pseudo-repeat track method DEM CryoSat-2 |
Naimona' Nyi Glacier Elevation Changes from 2010 to 2016 Using Cryosat-2 Satellite Data |
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| CHENG Shu,XIONG Zhangqiang,LI Xinwu,FU Wenxue.Naimona' Nyi Glacier Elevation Changes from 2010 to 2016 Using Cryosat-2 Satellite Data[J].Geomatics & Spatial Information Technology,2018(1):189-192. |
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| Authors: | CHENG Shu XIONG Zhangqiang LI Xinwu FU Wenxue |
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| Abstract: | With the climate of global warming, most of the glaciers in Central Asia are thinning. The changes of alpine glaciers will af-fect the water resources and sea level changes in the surrounding areas, thus we need the high-accuracy surface elevation observa-tions to research the glacier elevation change. The Naimona' Nyi glacier in the western Himalaya Mountains is given as an example of the research. Based on the CryoSat-2 satellite data of SARIn mode data, we adjust the pseudo-repeat track method and use the up-dated method to calculate the change of ice elevation from August 2010 to July 2016. The average elevation rate of the Naimona'Nyi glacier, where showed thinning, is -0. 47 ± 0. 44m/year. The result is similar to those in the reference, which proved that the Cry-oSat-2 data calculated by the pseudo-repeat track method is useful for estimating the elevation change of mountain glaciers. |
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