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

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

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

【作者】 汪大立; 康建成; 孙波; 温家洪; 刘雷保; 李忠勤; 李军

【Author】 Wang Dali ; Kang Jiancheng ; Sun Bo ; Wen Jiahong ; Liu Leibao ; Li Zhongqin ; Li Jun

【期刊】极地研究

【Journal】

【期刊年份】2000

【卷】11

【期】

【关键词】 surface snow; concentration and distribution of micro-particle; Antarctic ice sheet

【Keywords】 surface snow; concentration and distribution of micro-particle; Antarctic ice sheet

【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.

【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.

【基金/项目】

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