Detecting high spatial variability of ice shelf basal mass balance, Roi Baudouin Ice Shelf, Antarctica
作者: S. BergerR. DrewsV. HelmS. SunF. Pattyn
作者单位: 1Laboratoire de glaciologie, Université libre de Bruxelles, Brussels, Belgium
2Department of Geosciences, University of Tübingen, Tübingen, Germany
3Glaciology Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
刊名: The Cryosphere, 2017, Vol.11 , pp.2675-2690
来源数据库: Directory of Open Access Journals
DOI: 10.5194/tc-11-2675-2017
原始语种摘要: Ice shelves control the dynamic mass loss of ice sheets through buttressing and their integrity depends on the spatial variability of their basal mass balance (BMB), i.e. the difference between refreezing and melting. Here, we present an improved technique – based on satellite observations – to capture the small-scale variability in the BMB of ice shelves. As a case study, we apply the methodology to the Roi Baudouin Ice Shelf, Dronning Maud Land, East Antarctica, and derive its yearly averaged BMB at 10 m horizontal gridding. We use mass conservation in a Lagrangian framework based on high-resolution surface velocities, atmospheric-model surface mass balance and hydrostatic ice-thickness fields (derived from TanDEM-X surface elevation). Spatial derivatives are implemented using the...
全文获取路径: DOAJ  (合作)

  • spatial 空间的
  • Antarctica 南极洲
  • balance 平衡
  • shelf 陆架
  • variability 变异性
  • scales 天平
  • gridding 网格作图法
  • confidence 信用
  • integrity 综合性
  • refreezing 再冻结