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Recent accumulation rate at Dome A,Antarctica

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【Author】 HOU ShuGui1, LI YuanSheng2, XIAO CunDe3 & REN JiaWen1 1 Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2 Polar Research Institute of China, Shanghai 200129, China; 3 Chinese Academy of Meteorological Sciences, Beijing 100081, China

【摘要】 Based on the horizon of β activity and the density profiles, recent accumulation rate at Dome A, Ant-arctica is calculated to be 0.023 m water equivalent per year. This value is comparative to the accumu-lation rates deduced from the other inland sites of Antarctica. Clear-sky precipitation (or diamond dust) dominates the total precipitation at Dome A region. We speculate Dome A as a potential site to discover the oldest ice in Antarctica due to its tremendous ice thickness (>3000 m), extremely low accumulation rate, and low ice velocity.更多还原

【Abstract】 Based on the horizon of β activity and the density profiles, recent accumulation rate at Dome A, Ant-arctica is calculated to be 0.023 m water equivalent per year. This value is comparative to the accumu-lation rates deduced from the other inland sites of Antarctica. Clear-sky precipitation (or diamond dust) dominates the total precipitation at Dome A region. We speculate Dome A as a potential site to discover the oldest ice in Antarctica due to its tremendous ice thickness (>3000 m), extremely low accumulation rate, and low ice velocity.更多还原

【关键词】 Antarctica； Dome A； β activity； accumulation rate；
【Key words】 Antarctica； Dome A； β activity； accumulation rate；

【基金】 the National Natural Science Foundation of China (Grant No. 40576001);the Chinese Academy of Sciences (Grant No. 100 Talents Project and KZCX3-SW-354)

【文献出处】 Chinese Science Bulletin ,科学通报(英文版) , 编辑部邮箱 ,2007年03期

【分类号】P46
【被引频次】21
【下载频次】27

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