SAC Help

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

Email address
sac-help@lists.ds.iris.edu
Type
Moderated by
IRIS Webmaster
Related tags
SAC Software SAC
Login to manage your subscriptions

Active Message Threads for May 2011

Ralph Archuleta
2010-10-31 19:40:22 - 2011-05-31 21:43:37
I would like to get a pdf of the SAC manual. Where can I download it? -- Ralph J. Archuleta Professor and Chair Department of Earth Science & Earth Research Institute University of California, Santa Barbara Santa Barbara, CA 93106-9630 Phone: (805) 893-8441 FAX: (805) 893-2314 Email: ralph@eri.ucsb.edu or archuleta@geol.ucsb.edu ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ Please note new email address: ralph@eri.ucsb.edu Institute for Crustal Studies merged with another Institute at UCSB
Replies
urvashi keswani
2011-05-26 17:11:50 - 2011-05-26 18:14:57
Hello, This is Urvashi. I have installed a version of Fedora on my laptop and need help with installing sac on it. I have extracted the sac folder into /usr/local/ and have changed the file ./bashrc for setting the environment variables according to the instructions given in the readme folder. However I am not able to understand how to start the installation (which executable to run and using what commands) and also , should i run in form the /usr/local/sac/bin folder or from somewhere else.... [more]
Replies
Corrie
2011-05-26 00:28:52
Hi, In SAC I would like to plot two files on top of each other (overlay) and in the same window make picks (Tn) to be saved to the header of one or both files. I have been attempting this with commands p2 and ppk, but these produce separate windows. Is it possible to simultaneously plot two files in a plot window AND pick in that plot window? In more detail, I am plotting the spectra of the signal on top of the noise and I would like to mark the intersection of the two. My work-around ha... [more]
No replies
Ashish
2011-05-24 20:37:25
Hi all I have problem with sac compiling. I tried to compile sac (V 101.2) source on fedora 13. ./configure make i got error: ########################################################## Must remake target `co/getline.o'. gcc -DHAVE_CONFIG_H -I. -I../inc -I../inc -I../libedit/include -c -o co/getline.o co/getline.c Putting child 0x08b9e4c8 (co/getline.o) PID 2878 on the chain. Live child 0x08b9e4c8 (co/getline.o) PID 2878 co/getline.c: In function ‘getline’: co/getline.c:36: error:... [more]
No replies
Januka Attanayake
2011-05-19 20:07:14 - 2011-05-20 00:20:13
Hi, I am running the following macro and it was ok at first. My computer crashed while I was running it due to a technical issue unrelated to SAC. There after sac started spitting out the following error. I have no clue as to why the macro worked perfectly alright before the reboot and why it is failing now. Any infor. is much appreciated. I am using SAC 101.3b Thanks! Januka. Macro ====   setbb iff 0   DO FILE WILD *.SAC   evaluate to iff %iff + 1 * when iff < 2 (i.e. reading only 1 fi... [more]
Replies
Alex
2011-05-19 12:56:54
Hi all I have problem with sac compiling. I'm going to use sac ability running of matlab scripts, so I tried to compile sac source ./configure --with-matlab=/usr/local/bin/ glnx86 make make install after I got working sac program except matlab scripts ability I need your help Thank you -- Regards, Alex Ganiev, software engineer Ukraine, Institute of Geophysics aganiev@gmail.com algan@ukr.net
No replies
Mehmet Ergin
2011-05-18 17:39:02
(no body)
No replies
Devajit Hazarika
2011-05-16 11:03:31
Dear SAC Users I&nbsp;use SAC software for computation of teleseismic Receiver Functions used for crustal structure study.&nbsp; Can anyone&nbsp;guide me how to do "moveout" correction before stacking the Receiver Functions for different epicentral distance and back azimuth? Is there any option in Signal Stacking Subprocess of SAC ? I will be thankful If anybody can guide me in this regard. sincerely&nbsp; D. Hazarika
No replies
Devajit Hazarika
2011-05-15 17:45:04
Dear SAC Users I use SAC software for computation of teleseismic Receiver Functions used for crustal structure study.  Can anyone guide me how to do "moveout" correction before stacking the Receiver Functions for different epicentral distance and back azimuth? Is there any option in Signal Stacking Subprocess of SAC ? I will be thankful If anybody can guide me in this regard. sincerely  D. Hazarika
No replies
Rakotoarisaona Hasiniaina
2011-05-11 09:13:00 - 2011-05-11 19:23:03
Dear all, I am trying to set some times and date in a SAC header. So far I did the following: SAC> ch O GMT 2006 001 14 34 01 23 SAC> wh Although all of these change do not appear with "lh" command. Also, when I am doing the picking and write it into "hpf", I have got no error but when open the HPF file and it is empty. Is anyone can help me in this matter? (PS: I have been converted my data from ascii to sac using the fortran code amp2sac in this link http://web.utah.edu/thorne/so... [more]
Replies
Ivan
2011-05-07 00:01:01
Dear Colleague, I hope that I am at the right address to launch my question. I was using SAC polezero option recently to remove the instrument response from my data and to add it to synthetics. However, I realized that this option is acting as a 2-pass acausal filter. AS the actual seismometer filters the ground motion as 1-pass causal filter, it seems to me that it is impossible to recover actual ground motion by using this option. It is not very obvious with very band limited data, but... [more]
Replies
Elkins, Bailey E
2011-05-03 21:49:13
Hi all, I'm trying to run a macro that will produce correlations for all possible station pairs from a file list. I'm attempting to do this with a blackboard variable and a while loop. Each time I run the macro, it works fine for the first iteration of the while loop. The second iteration produces a segmentation fault after the correlate command is executed, but before it changes to my write directory. I have experienced this problem while running SAC 101.4 on 2 RedHat Linux workstat... [more]
No replies
Page built 03:15:19 | v.6a0a3e16