Advertisement

Large-Scale Dynamics of Ice Sheets

  • Ralf Greve
  • Heinz Blatter
Chapter
Part of the Advances in Geophysical and Environmental Mechanics and Mathematics book series (AGEM)

Abstract

With the constitutive equations given in Sects. 4.3 and 4.4, we are now able to formulate the mechanical and thermodynamical field equations for the flow of ice in an ice sheet. Figure 5.1 shows the typical geometry (cross section) of a grounded ice sheet with attached floating ice shelf (the latter will be treated in Chap. 6), as well as its interactions with the atmosphere (snowfall, melting), the lithosphere (geothermal heat flux, isostasy) and the ocean (melting, calving). Also, a Cartesian coordinate system is introduced, where x and y lie in the horizontal plane, and z is positive upward. These coordinates are naturally associated with the set of basis vectors {e x , e y , e z }. The free surface (ice-atmosphere interface) is given by the function z = h(x, y, t), the ice base by z = b(x, y, t) and the lithosphere surface by z = z l(x, y, t).

Keywords

Surface Mass Balance Hydrostatic Approximation Basal Drag Basal Shear Stress Pressure Melting Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Ralf Greve
    • 1
  • Heinz Blatter
    • 2
  1. 1.Inst. Low Temperature ScienceHokkaido UniversitySapporoJapan
  2. 2.Inst. Atmospheric & Climate ScienceETH ZürichZürichSwitzerland

Personalised recommendations