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Analysis of the variations of the lake ice phenology in the Pangong Lake area from 2013 to 2017: Remote sensing survey of the cryosphere in the high altitude and alpine region, West China(Ⅰ) |
Yunpeng YAN1, Hui XU2( ), Gang LIU1, Jianyu LIU1 |
1. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China 2. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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Abstract The analysis of the lake ice phenology in the high altitude and alpine area is of great significance for traffic capacity assessment on the lake ice in the cold season, disaster prevention and reduction of moraine lake burst and prediction on the flood disaster of the lower reaches in the warm season. On the basis of the OLI data from 2013 to 2017, four typical lakes(areas)in the Pangong Lake area were chosen for the analysis of the lake ice phenology in winter. The results show that the starting freeze time, the time of maximum ice amount, starting thaw time and totally thaw time of Zone1 and Zone2 in the Pangong Lake were almost simultaneous. Although Spanggur Lake and Moriri Lake both have higher altitude than Pangong Lake, and they shared the similar freeze processes. The starting thaw time of Spanggur Lake was later than Pangong Lake, while the totally thaw time was almost the same. The starting thaw time of Moriri Lake was about half to one month later than that of Pangong Lake, and the totally thaw time was one month later than other three lakes.
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Keywords
West China
high altitude and alpine region
cryosphere
remote sensing
lake
ice phenology
Pangong Lake
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Corresponding Authors:
Hui XU
E-mail: xuh@lasg.iap.ac.cn
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Issue Date: 30 August 2019
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