CABRILLO: Acoustic, elastic and poroelastic finite difference modelling
Pressure time-snapshots for acoustic sloping bottom
Cabrillo is a staggered Pseudo-spectral finite difference code for acoustic
elastic and poroelastic media. The advantage of a FD approach is that a
geometric complicated media can be modeled. Staggered grids are advantageous as
it provides more accuracy and can handle larger velocity and density contrasts
than using a classic grid. In a Pseudo-spectral method the spatial derivatives
are evaluated by a wavenumber multiplication in the wavenumber domain. The
advantage of this approach is stability and reduction in memory and the number
of computations required to obtain a given accuracy. Usually FD codes cannot
handle attenuation. But, using Biot theory it is also possible to incorporate
attenuation into the media by increasing the viscosity. Much care has gone into
obtaining a fast and reliable code. The kernel of the code is based on a code
from
Download CABRILLO
Please contact me when installing CABRILLO.
gerstoft@mpl.ucsd.edu
cabrillo.tar
(291 MB)
cabrillo.tar.gz (26 MB)
CABRILLO Users Guide
The user guide is included in the distribution kit.
· P. Gerstoft, "CABRILLO 1.0: Acoustic, elastic and poroelastic finite difference modelling,"
Peter Gerstoft