[MIS15-P19] Acceleration and retreat of Langhovde Glacier, East Antarctica, after the breakup of land-fast sea ice in 2016
Keywords:Antarctic, Ice sheet, Glacier, Sea ice
Terminus position has been relatively stable from 2000 to 2012, with only small fluctuations within a range of 200 m. The glacier then advanced by 400 m from 2012 to 2016. After 2016, the year of the land-fast sea ice break up, the terminus retreated rapidly by 720 m by 2020 as a result of large calving events in 2016 and 2019. The glacier front reached the most retreated position since 2000. After the sea ice breakup, ice speed increased from 110 m a−1 in 2017 to 135 m a−1 in 2019. The results of this study suggest the glacier had been stabilized by the land-fast sea ice by 2016. Rapid retreat and acceleration after the breakeup indicate significant influence of sea ice on the dynamics of outlet glaciers in Antarctica.
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