January 1, 2000 Journal article Open Access

Frédérique Rémy; C. Bianchi; Ignazio E. Tabacco; Laurent Testut

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{
  "DOI": "10.3189/172756400781820877", 
  "abstract": "AbstractImproved knowledge of geometrical boundary conditions, such as bedrock geometry and surface topography, can contribute significantly to glaciological studies including ice-sheet-flow modelling. Precise thickness and altimetric data allow an estimation of ice-flow direction, the balance velocity and the basal shear stress. These parameters are calculated along a 1160 km profile in East Antarctica using a relationship between shear stress, basal temperature, the Glen flow exponent and a parameter related to strain rate. Strong variations of the flow-law parameters and basal conditions are found to play a major role in the ice-flow pattern. Sliding, anisotropy and longitudinal stress strongly perturb the validity of the law, but their signature can be identified.", 
  "author": [
    {
      "family": "Fr\u00e9d\u00e9rique R\u00e9my"
    }, 
    {
      "family": "C. Bianchi"
    }, 
    {
      "family": "Ignazio E. Tabacco"
    }, 
    {
      "family": "Laurent Testut"
    }
  ], 
  "id": "121927", 
  "issued": {
    "date-parts": [
      [
        2000, 
        1, 
        1
      ]
    ]
  }, 
  "language": "eng", 
  "note": "", 
  "title": "Influence of geometrical boundary conditions on the estimation of rheological parameters", 
  "type": "article-journal"
}