Volume 44 Issue 7
Jul.  2019
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ZHANG Bo, ZHANG Rui, LIU Guoxiang, LIU Qiao, CAI Jialun, YU Bing, FU Yin, LI Zhilin. Monitoring of Interannual Variabilities and Outburst Regularities Analysis of Glacial Lakes at the End of Gongba Glacier Utilizing SAR Images[J]. Geomatics and Information Science of Wuhan University, 2019, 44(7): 1054-1064. DOI: 10.13203/j.whugis20190087
Citation: ZHANG Bo, ZHANG Rui, LIU Guoxiang, LIU Qiao, CAI Jialun, YU Bing, FU Yin, LI Zhilin. Monitoring of Interannual Variabilities and Outburst Regularities Analysis of Glacial Lakes at the End of Gongba Glacier Utilizing SAR Images[J]. Geomatics and Information Science of Wuhan University, 2019, 44(7): 1054-1064. DOI: 10.13203/j.whugis20190087
shu

Monitoring of Interannual Variabilities and Outburst Regularities Analysis of Glacial Lakes at the End of Gongba Glacier Utilizing SAR Images

  • 1.

    Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China

  • 2.

    State-Province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 611756, China

  • 3.

    Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China

  • 4.

    School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, China

  • 5.

    Department of Land Surveying and Geo-Informatics, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China

Funds: 

The National Key Research and Developement Program of China 2017YFB0502700

the National Natural Science Foundation of China 41771402

the National Natural Science Foundation of China 41871069

the National Natural Science Foundation of China 41601503

the National Natural Science Foundation of China 41801399

the Project on the Application Foundation of Sichuan Science and Technology Support Plan 2018JY0564

the Project on the Application Foundation of Sichuan Science and Technology Support Plan 2018JY0138

More Information
  • Author Bio:

    ZHANG Bo, PhD candidate, specializes in InSAR and surface deformation retrieval. E-mail:rsbozh@qq.com

  • Corresponding author:

    ZHANG Rui, PhD, associate professor. E-mail: zhangrui@swjtu.edu.cn

  • Received Date: March 06, 2019
  • Published Date: July 04, 2019
    Graphical Abstract
    • Abstract
  • Affected by global climate change, most glaciers in southeastern Tibet have deteriorated more and more frequently. The risk of mountain disasters, such as floods, surges and debris flows, has increased sharply in recent years. This paper implements a research on glacial lakes classification by using multi-source synthetic aperture radar (SAR) images. According to the statistical analysis of intensity difference between signals coming from water and non-water objects, a method of glacial lake extraction and dynamic monitoring based on the intensity standardization ratio of sequential SAR images is proposed. Within a typical experimental area in Gongba Glacier basin, the image series of ALOS/PALSAR-1 of Japan Space Agency and Sentinel-1A of European Space Agency are selected to carry out dynamic extraction of glacial lakes and long-term change analysis over 11 years'time, just for validation purpose. The temporal and spatial variations of glacial lakes at the end of Gongba Glacier from 2007 to 2018 are successfully obtained. And the further analysis finds out that the volume of glacial lakes increase rapidly in the past ten years. This evidence can also confirm the current situation of aggravated melting of Gongba Glacier. In addition, the recent monitoring results in 2018 show that the expansion of local burst gushes has broken the inherent life cycle of glacial lakes, and even trigger secondary disasters of floods and debris flows. It is necessary to strengthen monitoring and prevention.
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    • References (30)
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