SAC Help

A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.

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Active Message Threads for July 2014

Greg Brenn
2014-07-30 21:42:30 - 2014-07-30 21:58:28
Hi, I'm installing rdseed on Mac OSX 10.9.4, to read .SEED files into SAC. Following instructions in the README file, I am having trouble making rdseed executable. Here's what I've done thus far. 1. Requested/Downloaded rdseed from IRIS. Unpackage the tar file-- makes new subdirectory /rdseed5.3.1 on Desktop. I rename directory to /rdseed. 2. Currently, my /sac folder is in /usr/local. I copy the mac executable into /usr/local/rdseed with command: *$ cp -p rdseed.mac.x86.64 /usr/local… [more]
Greg Brenn
2014-07-29 19:50:44 - 2014-07-30 03:43:55
Hello, I am attempting to install SAC onto my MAC OSX 10.9.4, and I am having a little bit of trouble with the environment setup. I will explain what I've done thus far: I downloaded the sac-101.6a-mac_x86_64.tar.gz file and dragged it to my Desktop, where I executed the command in terminal: $ tar -xzf sac-101.6a-mac_x86_64.tar.gz Then a /sac subdirectory was created on my Desktop. Everything is going well so far. Then, I go into the README folder and get to the Environment Setup section… [more]
Shane Ingate
2014-07-29 20:10:26
After each editing session of your .bashrc file, you need to source it to make it's contents current. I.e.: % source ~/.bashrc Alternately, log out and/or open a new shell which forces a read of the .bashrc file. The way I read your note is that you tried running SAC without sourcing the freshly edited .bashrc file. S. -- Shane Ingate, Ph.D. New Mexico Tech Seismological Observatory Earth and Environmental Science Dept. New Mexico Tech 801 Leroy Place Socorro, NM 87801 web: http://ww… [more]
No replies
2014-07-22 22:32:08 - 2014-07-23 03:52:37
Hi All, I have a sac file of data recorded at a station and I need the precise location of the station from the header information. When I do SAC> r XX.LS01..BHE_20140416_000000.sac SAC> lh stlo FILE: XX.LS01..BHE_20140416_000000.sac - 1 -------------------------------------- stlo = -1.108064e+02 I get the longitude up to 4 digits after decimal probably because the default format is '%.6e'. Is there any way to see this information with 2 more digits after decimal (like '%.6f') in S… [more]
Matt Wei
2014-07-22 20:56:39 - 2014-07-23 03:27:18
hi there, I am trying to merge several files from the same station/channel with sac. The data are downloaded from IRIS using email request. A miniseed file is then converted to many sac files using mseed2sac. These particular problematic files include several short and long files, total 1 day of data. I put all the sac files in one folder and run the following sac commands. sac> r * sac> merge ERROR 9005: Amplitude mismatch What does this error mean? I googled around but didn't see an… [more]
Amr El-Sharkawy
2014-07-06 12:53:15
Hello dears I am asking if it possible, how to pick the surface wave automatically on the waveform with SAC. The purpose is to compute the surface wave magnitude. Waiting your kind response Regards amr Amr El-Sharkawy Seismologist, National Research Institute of Astronomy and Geophysics, (NRIAG), Egypt. e-mail:      Mobile: 01090201009 
No replies
2014-07-05 20:03:10
Hi SAC users ^_^ I am trying to use the waveform cross-correlation subroutine "crscor" provided in lib/libsac.a in a Fortran code (see file correlatef.f in doc/examples for details). When the number of windows is more than 1, can somebody please confirm whether it returns the sum of cross-correlations of all windows or the mean/average cross-correlation of all windows, i.e. does it divide the sum of cross-correlations of all windows by the number of windows ? Thanks. Regards, Avinash (Happy … [more]
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