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Recent accumulation rate at Dome A, Antarctica

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分类：P343.63[天文地球—水文科学;天文地球—地球物理学] P941.61[天文地球—自然地理学]
作者机构：[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
相关基金：Supported by the National Natural Science Foundation of China （Grant No. 40576001） and the Chinese Academy of Sciences （Grant No. 100 Talents Project and KZCX3-SW-354）.Thanks go to the 21st Antarctic Expedition of China for the field support and to Geng Zhixin for laboratory work.
相关项目：南极冰盖中山站-Dome A断面表层雪内的微生物系统多样性和群落结构特征

关键词：南极东部, 大陆冰盖, 堆积速度, DomeA地区, Antarctica, Dome A, βactivity, accumulation rate

中文摘要：

基于β活动和密度侧面的地平线，在屋顶 A 的最近的累积率，南极洲被计算每年是 0.023 m 水等价物。Thisvalue 对从 Antarctica.Clear 天空降水的另外的内陆地点推出的累积率比较(或钻石灰尘) 在屋顶统治全部的降水一个区域。是的 Wespeculate 屋顶 A 由于它的巨大的冰厚度(】3000 m ) 在南极洲发现最旧的冰的一个潜在的地点，极其低的累积率，和低冰速度。

英文摘要：

Based on the horizon of β activity and the density profiles, recent accumulation rate at Dome A, Antarctica is calculated to be 0.023 m water equivalent par year. This value is comparative to the accumulation 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.

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