The model corresponds to a single interface between two non-dissipative media. Consequently, RMOD must be the same as RMOD0, and RPHASE the same as RPH0. The model is the same as that used in Cerveny (2001) to demonstrate the behaviour of R/T coefficients. The angle loop is considered. Only NC=1 is used, so that the P1P1 reflection coefficient is computed in TEST1. Using various NC and NH, we can compare all computed R/T coefficients with those displayed in Figs. 5.1, 5.2, 5.6. 5.7 and 5.11 of Cerveny (2001).

The model corresponds to a single interface between two dissipative media. The model is the same as the model used for extensive computations by Brokesova and Cerveny(1998), see Figs. 8 - 23. Only NC=1 is used, so that the P1P1 reflection coefficient is computed in TEST2. The angle loop is considered. A strongly inhomogeneous incident plane wave is considered in this example, with GAMMA=75 degrees. For comparison, see Fig.9 of Brokesova and Cerveny (1998), which displays the same P1P1 reflection coefficient for nine different GAMMA's.

The model is the same as in the second test example, but the frequency loop is considered (with NF=20, FMIN=1., DF=4.). The homogeneous incident plane wave is assumed (GAMMA=0.). The S1S1 reflection coefficient (NC=6) for the normal angle of incidence (0 degrees) is computed. The obtained frequency-dependent effects (related to dissipation and dispersion) in the S1S1 reflection coefficients are not great for the normal incidence.

The model is the same as in the second example, only a thin stack of two layers is inserted between the two halfspaces (NZ=4). The thickness of each thin layer is 20 m. The stack has a laminated character: The parameters in the upper thin layer correspond to the bottom halfspace and the parameters in the lower thin layer correspond to the top halfspace. The homogeneous incident plane wave is considered (GAMMA=0.). The P1P1 reflection coefficient (NC=1) for the normal incidence (angle of incidence 0 degrees) is computed. The frequency loop is considered (with NF=20, FMIN=1, DF=4.).

The test examples may be executed by command

`perl go.pl rtcoef.h`

running the demonstration history file
'rtcoef.h'.

- Brokesova,J. (2001): Reflection/transmission coefficients at a plane interface in dissipative and non-dissipative media: A comparison. J.Comput.Acoustics, 9,623 -641.
- Brokesova,J., and Cerveny,V. (1998): Inhomogeneous plane waves in dissipative, isotropic and anisotropic media. Reflection/ transmission coefficients. In Seismic waves in complex 3-D structures, Report No. 7, pp. 57 - 146. Department of Geophysics, Charles University, Prague.
- Cerveny,V. (1989): Synthetic body wave seismograms for laterally varying media containing thin transition layers. Geophys. J. Int., 99, 331-349,
- Cerveny,V. (2001): Seismic ray theory. Cambridge Univ. Press, Cambridge.
- Muller,G. (1985): The reflectivity method. A tutorial. J.Geophys., 58, 153-174.