ABSTRACT
The rate of deformation of glacier ice under its own weight is described by the constitutive relation discussed in Chapter 2. According to the commonly used flow law (2.10), the rate of deformation increases with the third power of the applied stress. In Figure 5.1 this relation is shown schematically. Also shown are two other common forms of rheologic behavior, namely, Newtonian (linear) viscosity and perfect plasticity.
