| 念青唐古拉山冰川高程变化的ICESat监测 |
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| 引用本文： | 莫琪,刘少创,马友青,李明磊.念青唐古拉山冰川高程变化的ICESat监测[J].测绘科学,2018(4):59-65. |
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| 作者姓名： | 莫琪 刘少创 马友青 李明磊 |
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| 作者单位： | 中国科学院遥感与数字地球研究所,北京100101;中国科学院大学,北京100049
中国科学院遥感与数字地球研究所,北京,100101
南京航空航天大学电子信息工程学院,南京,211106 |
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| 基金项目： | 国家自然科学基金项目(41601494) |
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| 摘 要： | 针对青藏高原冰川高程变化研究较少的问题,该文提出一种大范围区域的冰川高程变化监测方法。基于ICESat激光高度计数据,联合利用SRTM DEM数据,计算念青唐古拉山脉冰川的高程变化,进而反演冰川的冰量变化。结果显示,念青唐古拉山冰川高程在2003—2009年间平均减薄速率为(0.53±0.47)(m·a~(-1)),估算得到冰量年均减少(0.32±0.28)km~3,总体呈逐年减少趋势,证明冰川一直处于消融状态。拉萨和当雄气象站的资料表明,冰川消融主要是由于当地气温升高。
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| 关 键 词： | 冰川高程变化 ICESat 激光测高 航天飞机雷达地形测图计划 念青唐古拉山脉冰川 glacier elevation changes ICESat laser altimeter shuttle radar topography mission (SRTM) Nyainq(e)ntanglha Range glacier |
Glacier elevation changes monitoring in Nyainq(e)ntanglha Range using ICESat |
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| MO Qi,LIU Shaochuang,MA Youqing,LI Minglei.Glacier elevation changes monitoring in Nyainq(e)ntanglha Range using ICESat[J].Science of Surveying and Mapping,2018(4):59-65. |
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| Authors: | MO Qi LIU Shaochuang MA Youqing LI Minglei |
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| Abstract: | Aiming at the problem that research on glacier elevation changes in the Tibetan Plateau is less,a method of monitoring glacier elevation changes was proposed in a large region in this paper.ICESat data and SRTM DEM data were jointly utilized to calculate ice surface elevation changes of glaciers in Nyainq(e)ntanglha range,and ice volume change was.estimated.Results showed that average thinning rate of Nyainq(e)ntanglha Range glacier elevation was(0.53±0.47)(m · a-1) from 2003 to 2009,and the average ice volume loss was retrieved to be(0.32±0.28)(km3 · a-1),thus glaciers over entire study region decreased gradually as a whole proving that glaciers have been melting.Meteorological station data of Lhasa and Damxung indicated that the phenomenon of glaciers melted was mainly due to local rising temperature. |
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