Overview

SAC (Seismic Analysis Code) is a general purpose interactive program designed for the study of sequential signals, especially timeseries data. Emphasis has been placed on analysis tools used by research seismologists in the detailed study of seismic events. Analysis capabilities include general arithmetic operations, Fourier transforms, three spectral estimation techniques, IIR and FIR filtering, signal stacking, decimation, interpolation, correlation, and seismic phase picking. SAC also contains an extensive graphics capability.

Obtaining SAC

New License Agreement (October 1, 2006)

In addition to IRIS Members and Affiliates, IRIS may also distribute the SAC Software to collaborators such as the U.S. Geological Survey, Air Force Technical Applications Center, members of the International Federation of Digital Seismograph Networks and other non-U.S. seismological institutes (subject to export control) who are involved in relevant research projects with IRIS. The SAC Software is available free through IRIS.

Downloading SAC

Binaries and source release (Version 101.0): March 2007

To request a copy of the SAC Software for Mac (OSX/PPC or OSX/Intel), Sun Solaris or Linux, please fill out the SAC Software Request Form [ http://www.iris.edu/manuals/sac/sac.request.htm ]

SAC Updates

SAC History [ http://www.iris.edu/manuals/sac/SAC_History.txt ]

SAC Changes [ http://www.iris.edu/manuals/sac/SAC_Changes.txt ]

SAC Software Request for Non-IRIS Members

If you do not qualify for the SAC Software through IRIS, but are interested in acquiring a copy of the SAC executables, please contact:

Industrial Partnerships And Commercialization
Attention: End User License
Lawrence Livermore National Laboratory
P.O. Box 808 L-795
7000 East Avenue
Livermore, CA 94550
E-Mail: softwarelicensing@lists.llnl.gov
Main Phone: (925) 422-6416
Fax: (925) 423-8988

http://www.llnl.gov/ipac/technology/software/softwaretitles/sac.php

Documentation

This guide shows you by example how the basic SAC commands work. Trying these examples as you read the guide will quicken the learning process. If you want to learn more about a particular command, see the Command Reference Manual. For general information on how SAC works, how to create and use SAC macros, on the structure of SAC data files, and how to interface other programs to SAC see the User's Manual.

SAC Mailing Lists