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
开展高寒高海拔区域的湖泊冰情变化分析,对于冷季湖冰通行能力评价、暖季冰碛湖溃决防灾减灾以及湖区下游洪涝灾害预测,均具有重要意义。基于2013—2017年Landsat8陆地成像仪(operational land imager,OLI)传感器获得的遥感数据序列,选择了班公湖地区4个有代表性的湖泊(区域),开展了冷季湖泊冰情变化分析,调查结果显示班公湖Zone1区和Zone2区作为同一个湖泊,冻结开始时间、封冻时间、解冻开始时间和完全解冻开始时间基本一致。尽管斯潘古尔湖和莫里里湖的湖面海拔比班公湖高,但是冻结过程三者基本一致。斯潘古尔湖解冻比班公湖要晚; 而最终的完全解冻开始时间两者基本一致。莫里里湖的解冻开始时间比班公湖要晚0.5~1个月; 而完全解冻时间比别的湖泊约晚1个月。
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.
燕云鹏, 徐辉, 刘刚, 刘建宇. 2013—2017年班公湖地区冷季湖泊冰情变化分析——中国西部高寒高海拔地区冰冻圈遥感调查(一)[J]. 国土资源遥感, 2019, 31(3): 209-215.
Yunpeng YAN, Hui XU, Gang LIU, Jianyu LIU. 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). Remote Sensing for Land & Resources, 2019, 31(3): 209-215.
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2019, Vol. 31 
), 刘刚1, 刘建宇1
