Block II: OASR options

In addition to supporting the SAFARI options described in [4], OASR supports several new options.

B

This option replaces the default P-P wave reflection or transmission coefficient by the P-Slow wave coefficient. Only allowed for Biot layers.

C

Loss contours plotted in frequency and grazing angle.

L

Generates a plot of reflection loss in dB in addition to the default linear magnitude plot vs frequency or angle.

N

This is the default option, which therefore never needs to be specified. It calculates the P-P reflection loss as function of angle and frequency.

P

Phase angle of reflection coefficient plotted in addition to the default magnitude.

S

This option replaces the default P-P wave reflection or transmission coefficient by the P-SV wave reflection coefficient.

T

Generates a table of computed complex reflection coefficients. The file is in ASCII format and will be given the same name as the input file, but extension .rco .

Z

Plot of velocity profiles.

p

Calculates and plots reflection coefficients vs horizontal slowness rather than the default grazing angle. This option allows for computing ``reflection coefficients'' in the evanescent regime. When this option is specified, the sampling in Block V should be given in slowness in s/km, and similarly for the plot parameters in Blocks VI and VIII.

s

Generates a file with boundary discontinuities for the rough interfaces. Used by OASS for computing scattering kernels.

t

Computes transmission coefficients instead of the default reflection coefficients. The transmission coefficients refer to the lowermost halfspace.