Reflectivity
PRESSure, RPRESS

* package for seismo-acoustic wave-fields in range-independent fluid-solid
media.

* techniques: wavenumber integration, normal modes, combinations of the two.

General
information file:
read.me.

The
RPRESS package contains five programs:

primarily by wavenumber integration, information
file: rpress.txt

primarily by wavenumber integration, information
file: rpressfw.txt

using a winding-number integral method, information
file: rmodfaut.txt

normalization or excitation factors, information
file: rmodpfw.txt

mode is tracked as a function of frequency,
information file: rmodfgr.txt.

Although
rpress and rpressfw were originally developed for wavenumber integration, the
field

can
be computed as a flexible mixture of wavenumber-integral and normal-mode
contributions.

Basically,
the compound-matrix method is used to solve boundary-value problems in

the
vertical direction for fixed horizontal wavenumbers.

Adaptive
numerical techniques with error control are used to do wavenumber integration

and
search for modal wavenumbers.

Accuracy
and error control are given high priority, and efficiency has been pursued

with
this constraint in mind.