极地研究

极地研究 ›› 2000, Vol. 11 ›› Issue (1-English): 43-52.

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Micro-particle in surface snow at Princess Elizabeth Land, East Antarctica

 Wang Dali1, Kang Jiancheng1, Sun Bo1, Wen Jiahong1, Liu Leibo1, Li Zhongqin2 and Li Jun3   

  1. 1 Polar Research Institute of China, Shanghai 200129, China;
    2 Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences, Lanzhou 730000, China;
    3 Antarctic CRC and Australian Antarctic Division, Hobart, Tasmania 7001, Australia
  • 出版日期:1950-03-30 发布日期:1950-03-30
  • 通讯作者: Wang Dali

Micro-particle in surface snow at Princess Elizabeth Land, East Antarctica

Wang Dali1, Kang Jiancheng1, Sun Bo1, Wen Jiahong1, Liu Leibo1, Li Zhongqin2 and Li Jun3   

  1. 1 Polar Research Institute of China, Shanghai 200129, China;
    2 Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences, Lanzhou 730000, China;
    3 Antarctic CRC and Australian Antarctic Division, Hobart, Tasmania 7001, Australia
  • Online:1950-03-30 Published:1950-03-30
  • Contact: Wang Dali

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摘要：

During the Austral summer of 1996/1997, the First Chinese Antarctic Inland Expedition reached the inland area about 330 km along the direction around 76°E from Zhongshan Station, and collected 84 surface snow samples at an interval of 4 km. Micro-particle analysis of the samples indicates that the micro particle concentration apparently decreases with the increasing of altitude, and the amplitudes of micro-particle concentration is much larger in the lower altitude than in the higher altitude. Further analysis of grain-size distributions of micro-particle, percentage of micro-particles from different sources and variations with altitude suggest that micro-particles in this area are from a considerably dominant source. Although this area is controlled by polar easterly wind and katabatic wind, transportation and deposition of the micro-particles are mainly influenced by marine transportation in coastal area.

关键词: surface snow, concentration and distribution of micro-particle, Antarctic ice sheet

Abstract:

During the Austral summer of 1996/1997, the First Chinese Antarctic Inland Expedition reached the inland area about 330 km along the direction around 76°E from Zhongshan Station, and collected 84 surface snow samples at an interval of 4 km. Micro-particle analysis of the samples indicates that the micro particle concentration apparently decreases with the increasing of altitude, and the amplitudes of micro-particle concentration is much larger in the lower altitude than in the higher altitude. Further analysis of grain-size distributions of micro-particle, percentage of micro-particles from different sources and variations with altitude suggest that micro-particles in this area are from a considerably dominant source. Although this area is controlled by polar easterly wind and katabatic wind, transportation and deposition of the micro-particles are mainly influenced by marine transportation in coastal area.

Key words: surface snow, concentration and distribution of micro-particle, Antarctic ice sheet