Karayaylak glacier changes in the Kongur Mountain of eastern Pamir between 1973 and 2016 based on active and passive remote sensing technologies
Lili FENG1,2, Liming JIANG1,2(), Lin LIU3, Yafei SUN4
1. State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430071, China 2. University of Chinese Academy of Sciences, Beijing 100049,China 3. MOE Key Laboratory of Fundamental Physical Quantities Measurement, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China 4. Henan University of Urban Construction, Pingdingshan 467036, China
Located on the northern slope of Kongur Mountains, Karayaylak glacier surged in May 2015. For the purpose of obtaining the glacier surface elevation changes of the Karayaylak glacier from 1973 to 2016, the authors used the 1973 Keyhole satellite optical remote sensing data, the US SRTM DEM data in 2000, and the TanDEM-X bistatic SAR data in 2013 and 2016. The results show that, from 1973 to 2013, there was no obvious elevation change; from 2013 to 2016, clear surface thickening was observed at the terminus of the west branch, whereas a relatively obvious glacial surface elevation thinning was detected in the upper part of the glacier. Landsat OLI image from 2013 to 2015 were employed to monitor the change of glacier surface velocities. The distributions and changes of the glacier surface velocities indicate that the western tributary of Karayaylak glacier moved faster than any other tributaries. According to the comprehensive analysis, it is considered that there is no obvious advance or retreat trend at the terminus of the glacier before glacier surge, and the flow velocity of the glacier has changed greatly. In addition, combined with the results of meteorological data, it is believed that the glacial surge has little to do with local climate change. The main reason for the surge is probably attributed to the structural change of the glacier itself.
冯力力, 江利明, 柳林, 孙亚飞. 新疆克拉牙依拉克冰川变化(1973—2016)主被动遥感监测分析[J]. 国土资源遥感, 2020, 32(2): 162-169.
Lili FENG, Liming JIANG, Lin LIU, Yafei SUN. Karayaylak glacier changes in the Kongur Mountain of eastern Pamir between 1973 and 2016 based on active and passive remote sensing technologies. Remote Sensing for Land & Resources, 2020, 32(2): 162-169.
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2020, Vol. 32 
), 柳林3, 孙亚飞4
