Program Hypotable: README

The Hypotable distribution consists of a Unix directory tree with four sub-directories: ./iaspei-tau, which includes the software needed to construct the iasp91 traveltime tables and create the Hypotable executable; ./build-tables, which has the input and output for building a set of tables in the format to be used in Hypoellipse; ./sample-runs, which gives a sample application showing how these tables can be used in Hypoellipse; and ./bin, which is empty in the Hypotable distribution but is where the executable files are placed on a Unix system after running the makefiles which create them. Three README HTML files contain information on the contents of ./iaspei-tau, ./build-tables, and ./sample-runs.

There are two files which can be downloaded:

The Hypotable package, minus executables: (gzip/tar format: 309 KB) | (PKZIP format: 327 KB). Last updated March 2003.
Executables built using Sun Solaris 2.8 (gzip/tar format: 1.39 MB) | (PKZIP format: 1.38 MB). Last updated May 2002.

In March 2003, modifications were made to the source code for fortran files remodl.f, ttimes.f, and libtau.f so that theprograms in this package could comple and run on PC Linux (Red Hat 8.0) using the GNU g77 compiler.

On Unix, one can both uncompress and untar a file XXX.tgz with a single command:

gzip -d -c XXX.tgz | tar -xf -

using the GNU gzip command (included with Solaris 2.8). On MACs or PCs there are utilities which accomplish the same operations — some while downloading the files. Files and/or directory trees compressed into a file named XXX.zip using the zip (PKZIP) utility can be uncompressed and expanded using the command

unzip XXX.zip

The zip and unzip utilities come on Sun Solaris 2.8 and on are included in utilities on most PC and Mac installations. If one does not have them already, they can be found for most operating systems at Info-Zip.org.

I do not use PCs, but I succeeded in creating the IASP91 tables for use in my FOCMEC package. However, the tables are compiler dependent and the software is not robust for models other than iasp91, so I have chosen not to provide them here. The USGS ftp server has source code and instructions for building the iasp91 software package on a PC.

The source for Hypotable is written in basic Fortran 77 so should compile on other platforms with only minor modifications.