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    Long-term changes in the snow-firn pack stratigraphy on Urumqi glacier No. 1, Eastern Tien Shan, China

    Access Status
    Open access via publisher
    Authors
    Wang, F.
    Li, Z.
    Edwards, Peter
    Li, H.
    Date
    2007
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Wang, F. and Li, Z. and Edwards, P. and Li, H. 2007. Long-term changes in the snow-firn pack stratigraphy on Urumqi glacier No. 1, Eastern Tien Shan, China, in International Symposium on Cryospheric Indicators of Global Climate Change, Aug 21-25 2006, pp. 331-334. Cambridge, UK: International Glaciological Society.
    Source Title
    Annals of Glaciology, Volume 46
    Source Conference
    International Symposium on Cryospheric Indicators of Global Climate Change
    DOI
    10.3189/172756407782871198
    ISSN
    0260-3055
    URI
    http://hdl.handle.net/20.500.11937/16171
    Collection
    • Curtin Research Publications
    Abstract

    We report on changes to the snowpack of Ürümqi glacier No. 1, eastern Tien Shan, China, resulting from climate change between 1961 and 2005. Data from more than 120 snow pits were used to investigate temporal changes in the snow stratigraphy for three periods 1961–62, 1980–83 and 2002–05. Both the thickness and structure of the snow were found to be significantly altered by climatic warming. The proportion of coarse-grained firn, which is usually formed by infiltration water, was found to have increased from 40% to 65% over the period 1961–2005, and the distribution of the glacier zones also changed significantly, with all boundaries moving up-slope. The recrystallization–infiltration zone disappeared in 1989. The mean ablation rate over the melt season increased by ~26% from 1962 to 1980 at the west branch site and by ~75% from 1980 to 2004 at the east branch site.

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