SAGA 5.5

SAGA is an inversion software package for ocean acoustic and atmospheric electromagnetic environments. It integrates state-of-the art propagation codes with state-of-the art optimization and inversion codes.

Jumpstart SAGA

A detailed description for a new user to get acquainted with SAGA. The documentation is the Users Guide available below.
Download Jumpstart SAGA (pdf) and the  accompanying examples (tar file).  (July 2006)

Download SAGA

gzipped tar file: saga.tgz (September 2010)

SAGA Platforms

SAGA is now implemented in Fortran90. The binaries for Linux (RH 9) and Mac Os X is now distributed with the code, no compilation should be necessary. Version 5.3 has been compiled on Sun Solaris, Mac os X (xlf fortran), Linux (Intels ifort) and Dec Alpha.

I use the Intel Fortran90 compiler on Linux (ifort). For non-commercial use the compiler can be downloaded free of charge from this web site:
I have also good experience with the Portland Group Fortran (pfg) compiler.
On Mac OS X I use IBM's xlf compiler.

Precompiled binaries
In order to use the precompiled binaries put the following statements in your .login:
For linux
setenv SAGADIR ~/saga
source $SAGADIR/bin/linuxsaga_init
or for Mac OS X
setenv SAGADIR ~/saga
source $SAGADIR/bin/macsaga_init

SAGA Users Guide

P. Gerstoft, "SAGA Users guide 5.4, an inversion software package," , October 2007.
this is an updated version of "SAGA Users guide 2.0, an inversion software package"; SACLANT Undersea Research Centre, SM--333, La Spezia, Italy (1997)

1-D (diagonal) and 2-D marginal posterior distributions for a self-noise inversion using Gibbs sampling. For more details see the papers by Battle et al, 2004.

The word SAGA stems from Icelandic and simply means a story. A saga is usually understood a prosaic long story from the middle ages. It tends to go on forever. Scientifically it stands for Seismo-Acoustic inversion using Genetic Algorithms.

Page Last Modified: October 2007