disper

We run disper with the following command,

disper disper.d

The output includes a file, disper.tmp, which lists all the phase velocities for all the modes in the frequency range requested. In this example, the name of the dispersion curve file is earth.crv, and a Octave file is generated, phase.m which can be used to plot the dispersion curves. Start a Octave session and type the following in the Octave text window:

phase;

The resulting plot is shown here in Figure 56. The modes have been annotated in Xfig.

Figure 56: Phase velocity curves computed for model in Figure 55.