SeismicHandler - Waveform Analysis Tool

Menu entry LocSAT

Interface to the location program of Steve Bratt and Walter Nagy. This program is not part of the distribution of SH/SHM. It must be copied and installed separately. The code is a mixture of Fortran and C. For some platforms executable version are available on our ftp server. Calling this entry writes all phases which are picked and have a quality factor (see phase dialog box) of at least 2 (!) into a scratch file which is passed to LocSAT and run. The output of LocSAT is displayed in a text window and the location results also read into SHM. If the location program does not work, please check first the quality factor of your phases.

The dialog box of LocSAT has the following options:

Installation of the LocSAT tar file has to be done in $SH_UTIL:
cd $SH_UTIL; tar xvf <locsat-tarfile>
A man page of LocSAT itself is then found in $SH_UTIL/locsat/doc/man/man1. To read it enter in a C-shell:
setenv MANPATH ${MANPATH}:$SH_UTIL/locsat/doc/man
man LocSAT

For debugging: what happens is:

Please note a bug in LocSAT: if the path to the travel time table files (given as $SH_LOCSAT in $SH_ROOT/setup/shsetup) is too long (more than 22 characters) the program crashes. If your path is longer then you have to use a link to your LocSAT tables directory which is shorter and 22 characters. This link you have to specify in the definition of $SH_LOCSAT in $SH_ROOT/setup/shsetup. Do not change the definition of $SH_LOCSAT_EXEC.

This page last modified 13-Jul-2000