| Recent accumulation rate at Dome A, Antarctica |
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| 作者姓名： | HOU ShuGui LI YuanSheng XIAO CunDe REN JiaWen |
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| 作者单位： | [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 |
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| 基金项目： | 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. |
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| 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.
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| 关 键 词： | Antarctica Dome A β activity accumulation rate |
| 收稿时间： | 31 August 2006 |
| 修稿时间： | 2006-08-31 |
Recent accumulation rate at Dome A,Antarctica |
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| HOU ShuGui LI YuanSheng XIAO CunDe REN JiaWen.Recent accumulation rate at Dome A, Antarctica[J].Chinese Science Bulletin,2007,52(3):428-431. |
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| Authors: | Hou ShuGui Li YuanSheng Xiao CunDe Ren JiaWen |
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| Institution: | (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 |
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| Abstract: | 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
per 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.
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) |
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| Keywords: | Antarctica Dome A β activity accumulation rate |
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