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喀喇昆仑山区冰川因位于高海拔地区且远离人类正常活动的区域,使得连续的表面流速的地面观测很难实施,因此,对该区域冰川运动机理研究相对比较少.采用日本高级陆地观测卫星携带的相控阵型L波段合成孔径雷达(Advanced Land Observing Satellite,Phase Array L-band Synthetic Aper-ture Radar,ALOS PALSAR)特征匹配方法(Feature-Tracking)获取了音苏盖提冰川的季节表面流速,并对误差进行了分析.结果表明:季节和年均表面流速分布图上都存在两条明显快速运动的冰流;南分支冰川-斯嘎姆里冰川(Skamri Glacier)夏季的流速大于其他季节,冰流横截面流速特征表明,该分支存在明显的块体运动现象,很可能正处于跃动期.
Because glaciers in the Karakorum Mountains are located at high altitudes and are far away from normal human activities, ground observations of continuous surface flow rates are very difficult to be implemented, and therefore there are relatively few studies on glacial movement in this region. Using the Japan Advanced Land Observation Satellite The seasonal surface velocities of the Superstar Glacier were obtained by Feature-Tracking method of the phase array L-band Synthetic Aper-ture Radar (ALOS PALSAR) The results show that there are two distinctly fast moving ice streams on the seasonal and annual mean surface flow velocities. The flow rate of the southern branch glacier-Skamri Glacier is higher than that of other seasons in summer The cross-sectional flow velocity characteristics of the flow show that there is a significant block movement in the branch and is likely to be in a period of turbulence.