A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
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Help
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- SAC Software SAC
Active Message Threads for January 2017
Dear Madam/Sir,
I have some problems in building SAC in cygwin. I have listed my
questions in order as follows:
1. I am using Windows and I installed "cygwin". However, I could not
open "aux" file in Windows and I tried to change its name as ",aux".
In "Makefile" files I replaced "aux" with ",aux", however I think that
I miss a point. How can i solve this "aux" problem?
2. My second question is ".dll" files are missed, how can I get them?
Sincerely yours
Ekin Ozlu
Middle East Tech…
[more]
Replies
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SAC Error Questions - Ekin Ozlu - 2017-02-06 19:06:54

2017-01-26 02:16:29
- 2017-01-26 20:06:36
Hi guys,
I'm having troubles trying to merge a large number of noise files. I have SAC files of 1 hour each and I want to obtain first a file of a day and then a file of a week. It's the first time I'm using SAC, so my knowledge is limited. I'm trying to merge them however a message error keeps appearing:
ERROR 1801: Header field mismatch: Time Sampling [DELTA]: 0.002000 0.010000
Does anyone know how to fix this time sampling mismatch? All help is welcome!
Cheers!
Replies
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Re: How to join multiple SAC file to make one SAC file? - George Helffrich - 2017-01-26 20:06:36
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Re: How to join multiple SAC file to make one SAC file? - Maria Luíza Cardoso - 2017-02-23 14:31:06
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2017-01-18 01:32:35
- 2017-01-18 02:45:50
Hello,
I believe I have correctly installed SAC on ubuntu and I have followed instructions from the README file and from this help forum for setting up the environment variables. However, when I try to run SAC I am not getting the SAC> prompt I expect. Instead I get the message "Total: x over 8 days", where x is some number that keeps increasing. How can I get SAC up and running correctly?
Thank you,
Dawson
Replies
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Re: Not getting the SAC> prompt after running sac - Brian Savage - 2017-01-17 20:46:45
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Re: Not getting the SAC> prompt after running sac - Huth, Dawson - 2017-01-18 02:45:50
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Dear Rob,
This is a follow-up of my problem with rdseed sometimes in November 2016.
Kindly find below the sites where to get the seed data volume I am
interested in. As usual, expiry is after 7 days from today.
Regards,
Josphat
======== INSTRUCTIONS for DOWNLOADING your DATA with a WEB BROWSER ========
TO DOWNLOAD your data, click on any one of the following URLs:
ftp://ftp.iris.washington.edu/pub/userdata/Josphat_K__Mulwa
http://ds.iris.edu/pub/userdata/Josphat_K__Mulwa
DIRECT LINK to th…
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Re: rdseed error - Robert Casey - 2017-01-13 16:16:31

2017-01-11 21:41:36
- 2017-01-12 18:49:37
Hello everyone,
So, I have a problema with my file.sac data, the thing is,
Because of my data have been a bad GPS time syncronization, every sample of
my file dosn't correspond with the real GPS time. But I have a time factor
correction to move every data to his real simple. I mean, for example in
the original file for the first simple correspond 01h03min33 seconds and i
have to rest one second to this simple (and the same operation to all the
seismogram)
How I have to apply this correction,…
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Re: Correct the clock drift of a SAC file - Geo . - 2017-01-12 07:33:00
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Re: Correct the clock drift of a SAC file - George Helffrich - 2017-01-12 18:49:37
Hello,
I am new to SAC. I have unpacked the files but am still lost on what to do beyond that. I have read the read me file after unpacking and further action is still a bit ambiguous to me. Any advice is greatly appreciated. Maybe I can be pointed to a past thread on the SAC help forum.
Thank you,
Dawson Huth