J4 ›› 2011, Vol. 41 ›› Issue (4): 1121-1129.

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Impact of Temperature on Glacier-Lake Outbursts in Tibet

LIU Jing-jing1, 2, 3, 4, TANG Chuan2, CHENG Zun-lan1, 3, LIU Yu5   

  1. 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences &|Ministry of Water Conservancy, Chengdu610041|China;
    2.State Key Laboratory of Geohazard Preventions, Chengdu University of Technology,Chengdu610059|China
    3.Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu610041|China;
    4.Graduate School of Chinese Academy of Sciences, Beijing100039|China;
    5.Chendu Hydropower Investigation Design &|Research Institute, Chengdu610072|China
  • Received:2010-10-09 Online:2011-07-26 Published:2011-07-26

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Abstract:

Glacier-lake outburst is closely related to temperature fluctuation. With the global warming, it is important to study the relationship between them. The authors try to find out the relationship based on the temperature data associated with 14 glacier-lake outburst events in Tibet. It is found that the outburst is sensitive to acute change in annual temperature. Most outbursts occur at the years with abnormal change in temperature. According to this study, the probability of outburst depends on temperature series in many years. According to the combination with positive accumulated temperature (T) and exponent (a) of fitting curve that is fitted for accumulated temperature, we can distinguish low-possibility outbursts and high-possibility outbursts by power function. The authors recommend long time series of total accumulated temperature and exponent of accumulated temperature curve is effective way to study glacier-lake outburst.

Key words: Tibet, temperature, glacier-lake outbursts, impact

CLC Number: 

  • P694
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