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《Journal of Glaciology and Geocryology》 1981-01
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INFLUENCE OF SNOW COVER TO THE GROUND TEMPERATURE IN THE PERMAFROST REGION IN THE NORTHERN PART OF THE GREAT XINAN MOUNTIAN

Dai Jingbo, Li Anying ( 3rd Design Institute of Railway )  
The first snow in the permafrost Region in the northern part of Great Xinan Mountain appears in the 2nd or 3rd decade of Sepetember to the 1st decade of October, and snow accumulation begins in the 3rd decade of October when the air temperature falls down to below O℃. The depth of snow accumulation is generally 20-50 cm with a density of 0 .146-0.175g/cm3. The snow melting begins in March next year, first from the sun-facing then the sun-backing slopes, the accumulated snow on the surface ground gradually disappears in April. From the second decade of October to the third decade of February next year, snow cover plays the role of heat preservation, making the ground temperature under it higher than the temperature on its naked surface. But from March on, with the rising of air temperature, the ground temperature under the snow cover,conversely, becomes lower than the temperature on the naked surface, i.e.from now on the snow cover turns to play a cooling role. Besides, snow cover reduces apparently the surface ground temperature difference ( table 6) and correspondingly attenuates the yearly fluctuation of underground temperature (fig. 3 ) .
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【References】
Chinese Journal Full-text Database 4 Hits
1 Zhang Tingjun, Tong Boliang and Li Shude (Lanzhou Institute of Glaciology and Geocryology, Academia Sinica);Influence of Snow Cover on the Lower Limit of Permafrost in Altai Mountains[J];Journal of Glaciology and Geocryology;1985-01
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3 GAO Rong~{1}, WEI Zhi-gang~{1}, DONG Wen-jie~{2}(1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Acadeny of Sciences, Lanzhou Gansu 730000,China;2. Institute of Atmospheric Physics, Chinese Acadeny of Sciences, Beijing 100029, China);Analysis of the Cause of the Differentia in Interannual Variation BetweenSnow Cover and Seasonal Frozen Soil in the Tibetan Plateau[J];Journal of Glaciology and Geocryology;2004-02
4 WANG Chenghai1,2,JIN Shuanglong1,WU Zhongyuan1,CUI Yang1(1.College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China;2.State Key Laboratory of Crosphere Sciences,CAS,Lanzhou 730000,China);Evaluation and Application of the Estimation Methods of Frozen (Thawing) Depth over China[J];Advances in Earth Science;2009-02
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Zhou Youwu, Guo Dongxin (Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica);PRINCIPAL CHARACTERISTICS OF PERMAFROST IN CHINA[J];Journal of Glaciology and Geocryology;1982-01
2 Cheng Guodong, Wang Shaoling ( Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica );ON THE ZONATION OF HIGH-ALTITUDE PERMAFROST IN CHINA[J];Journal of Glaciology and Geocryology;1982-02
3 Xu Xiaozu, Guo Dongxin ( Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica );COMPILATION OF THE DISTRIBUTION MAPOF FROZEN GROUND 1:4,000,000 IN CHINA[J];Journal of Glaciology and Geocryology;1982-02
4 Dai Jingbo ( 3rd Survey and Design Institute, Ministry of Railway );CHARACTERISTICS OF GROUND TEMPERATURE IN PERMAFROST AREAS IN THE NORTHERN PART OF GREAT XINAN MOUNTAIN[J];Journal of Glaciology and Geocryology;1982-03
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【Secondary References】
Chinese Journal Full-text Database 10 Hits
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7 LI Ying-nian +1, GUAN Ding-guo +2, ZHAO Liang +1, GU Song +1, ZHAO Xin-quan +1(1.Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining Qinghai 810001, China; 2.Studhorse Farm of Menyuan of Qinghai Province, Menyuan Qinghai 810300, China);Seasonal Frozen Soil and Its Effect on Vegetation Production in Haibei Alpine Meadow[J];Journal of Glaciology and Geocryology;2005-03
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10 WANG Qiu-xiang~1, LI Hong-jun~2, WEI Rong-qing~1, WANG Xiao-mei~1(1.Environmental Meteorological Center,Xinjiang Meteorological Bureau,rümqi Xinjiang 830002,China;2.rümqi Instituteof Desert Meteorology,China Meteorological Administration,rümqi Xinjiang 830002,China);Annual Change and Abrupt Change of the Seasonal Frozen Soil in Xinjiang,China during 1961-2002[J];Journal of Glaciology and Geocryology;2005-06
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