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  • 标题:Strong-wind events and their influence on the formation of snow dunes: observations from Kohnen station, Dronning Maud Land, Antarctica
  • 本地全文:下载
  • 作者:Gerit Birnbaum ; Johannes Freitag ; Ralf Brauner
  • 期刊名称:Journal of Glaciology
  • 印刷版ISSN:0022-1430
  • 电子版ISSN:1727-5652
  • 出版年度:2010
  • 卷号:56
  • 期号:199
  • 页码:891-902
  • DOI:10.3189/002214310794457272
  • 出版社:Cambridge University Press
  • 摘要:10 m s -1 at 2 m height caused by the influence of a low-pressure system. The dune surface coverage after a formation event varied between 5% and 15%, with a typical dune size of (4 ± 2) m × (8 ± 3) m, a maximum height of 0.2 ± 0.1 m and a periodicity length of about 30 m. The mean density within a snow dune varied between 380 and 500 kg m -3 , whereas the mean density at the surrounding surface was 330 ± 5 kgm -3 . The firn cores covering a time-span of 22 ± 2 years reveal that approximately three to eight events per year occurred, during which snow dunes had been formed and were preserved in the firn.
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