Mass balance of the Lambert Glacier basin, East Antarctica |
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Authors: | Jiawen Ren Ian Allison Cunde Xiao and Dahe Qin |
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Institution: | 1. Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2. Antarctic CRC and Australian Antarctic Division, GPO Box 252-80, Hobart, Tasmania 7001, Australia |
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Abstract: | Since it is the largest glacier system in Antarctica, the Lambert Glacier basin plays an important role in the mass balance
of the overall Antarctic ice sheet. The observed data and shallow core studies from the inland traverse investigations in
recent years show that there are noticeable differences in the distribution and variability of the snow accumulation rate
between east and west sides. On the east side, the accumulation is higher on the average and has increased in the past decades,
while on the west side it is contrary. The ice movement measurement and the ice flux calculation indicate that the ice velocity
and the flux are larger in east than in west, meaning that the major part of mass supply for the glacier is from the east
side. The mass budget estimate with the latest data gives that the integrated accumulation over the upstream area of the investigation
traverse route is larger than the outflow ice flux by 13%, suggesting that the glacier basin is in a positive mass balance
state and the ice thickness will increase if the present climate is keeping. |
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Keywords: | mass balance Antarctic Ice Sheet Lambert Glacier |
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