SAC (Seismic Analysis Code) is a general purpose interactive program designed for the study of sequential signals, especially time series 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.
For further background information, see SAC Availability for the IRIS Community, by Peter Goldstein and Arthur Snoke (Feature Article, IRIS DMS Newsletter, March 2005).
- History has a summary of major modifications made to SAC since 1990.
- Changes includes details about modifications made since 2005.
- Users Manual and tutorial
If you have technical questions about the SAC software, please send an e-mail message to the sac-help listserv. You must be a subscriber to post to this listserv. Read more.
SAC DHI
SAC DHI allows the SAC program to connect via the Internet to the Data Handling Interface (DHI) online systems.
SAC Software has been distributed over 5,000 times by the IRIS DMC since 2005.
For more details, see the article SAC Software Statistics in the Spring 2010 edition of the DMS Newsletter.
SAC Software Availability
The SAC Software is available free through IRIS to IRIS Members and Affiliates. In addition, 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 current version of SAC is Version 101.5c (February 2012), and is available in compressed tar format either as a source distribution or as a pre-built binary distribution for selected platforms and operating system.
To request a copy of the SAC Software, please fill out the SAC Software Request Form.
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 CommercializationAttention: 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
https://ipo.llnl.gov/?q=technologies-software
SAC Mailing Lists: sac-help and sac-dev
sac-help provides a forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
Click here for information on subscribing, unsubscribing, posting messages, etc.
sac-dev is a forum for SAC developers to exchange ideas about SAC enhancements, bug fixes, etc.
Click here for information on subscribing, unsubscribing, posting messages, etc.
How to cite SAC in a publication
Goldstein, P., A. Snoke, (2005), "SAC Availability for the IRIS Community", Incorporated Research Institutions for Seismology Data Management System Electronic Newsletter.
Goldstein, P., D. Dodge, M. Firpo, Lee Minner (2003) "SAC2000: Signal processing and analysis tools for seismologists and engineers", Invited contribution to "The IASPEI International Handbook of Earthquake and Engineering Seismology", Edited by WHK Lee, H. Kanamori, P.C. Jennings, and C. Kisslinger, Academic Press, London.
