A forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc.
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Help
Help lists are for submitting support questions. Anyone can post a question for IRIS (or another team) to answer.
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- SAC Software SAC
Active Message Threads for October 2017
Mukesh Das
Hi sac users,
I have computed Ps receiver function in which maximum amplitude (direct
P-wave arrival) comes after 2-3 sec not at 0 sec. I want to shift maximum
amplitude at 0 sec. Can anyone suggest how to shift this maximum amplitude
at 0 sec. Here below i have attached some screen shot of receiver function
in which maximum amplitude (direct P- wave arrival) come at after 2-3 sec.
Thanks
--
Mukesh Kumar Das
JRF (Research Scholar)
Department of Applied Geophysics
Indian lnstitute of Technol…
[more]
Replies
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Re: Need Help. - Craig Jones - 2017-10-28 06:37:06
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RE: Need Help. - Steve Gao - 2017-10-30 23:29:47
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Re: Need Help. - Mukesh Das - 2017-10-31 18:16:06
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Re: Need Help. - Geo . - 2017-10-28 16:05:47
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Re: Need Help. - Mukesh Das - 2017-10-29 18:05:06
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Re: Need Help. - George Helffrich - 2017-10-28 22:51:16
Guilherme de Melo
Hello!
Does anyone know the bibliographic reference of the cross correlation
method used by the SAC in the correlate command?
Regards,
Guilherme de Melo
--
Guilherme Weber Sampaio de Melo
Master's seismology research - UFRN/BR
Replies
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Re: Reference of corrlelate - George Sand França - 2017-10-23 06:30:56
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Re: Reference of corrlelate - Brian Savage - 2017-10-23 17:45:48
Hi,
Can anyone please help me to solve the problem in SAC, like the problem is,
in some of the receiver function the direct P-arrival is coming in 2-3 sec
instead of 0 sec. I have tried it to fix but some headers value is missing.
Thank you.
--
Mukesh Kumar Das
JRF (Research Scholar)
Department of Applied Geophysics
Indian lnstitute of Technology (Indian School of Mines)
Dhanbad, Jharkhand-826004, India
Mob +918873563108
+918340601230
No replies
andreas wessel
Hi list,
I'm wondering if there is an easy way to start SAC silently, e.g. not
getting those lines:
SEISMIC ANALYSIS CODE [06/06/2005 (Version 100.1)]
Copyright 1995 Regents of the University of California
Would be net if there was a flag or command or something for this. (I'm
using Sac 100.1 on a linux machine)
Thanks,
Andreas
Replies
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Re: start sac "silently" - Robert Casey - 2007-02-22 16:16:26
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Re: start sac "silently" - andreas wessel - 2007-02-23 16:34:10
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Re: start sac "silently" - Keith Richards-Dinger - 2007-02-23 01:09:51
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Re: start sac "silently" - Xiaotao Yang - 2017-10-23 15:32:08
joel.lowe.14@ucl.ac.uk
Hello
I basically want to add the correct SAC header from .txt file to the corresponding .SAC file
I have .SAC file which are named as followed;
N.TROH.U.D.1.SAC
N.TROH.U.D.2.SAC
N.TROH.U.B.3.SAC
N.TROH.U.C.4.SAC
and so on....
I also have a .txt called TROH_T1_T2.txt which is set-out as followed.
N.TROH.U.D.1.SAC 5.5424 6.4533
N.TROH.U.D.2.SAC 3.2432 5.5433
N.TROH.U.B.3.SAC 7.5345 9.5345
N.TROH.U.C.4.SAC 5.3424 3.4234
and so on .....
what i w…
[more]
Replies
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Re: Adding SAC headers from .txt file - Milton Plasencia - 2017-10-17 02:53:26
Sachin Tiwari
Hi Sac Users,
Can you please help me in listing all my SAC files in increasing order of
their back-azimuth values and assigning integer weights starting from “1”
to each file in their “user8” header? If there are 8 sac files then file
with minimum back-azimuth will have "1" weight in user8, while maximum
back-azimuth file will have "8" weight in its sac header.
Thanks
--
*Sachin Kumar *
*Junior Research Fellow (JRF)*
*Dept. of Applied Geophysics*
*Indian Institute of Technology (Indian S…
[more]
Replies
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Re: Need Help - Satish_iitb - 2017-10-11 04:23:34
Alejandro Gaytan
2017-10-06 16:11:14
- 2017-10-07 15:29:41
Hello I ‘ll apreciarte you support:
How convert acceleration files with extension .SAC to velocity by using SAC software ?
Thanks so much.
Alejandro
Replies
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Re: How convert from acceleration to velocity in SAC - Milton Plasencia - 2017-10-07 15:29:41
Sunil .
Dear All,
In signal stacking sub-process (SSS), by default the record section is plotted with distance. I want to plot the record section with another variable like azimuth.
Is there any provision to do it in SSS.
I will appreciate any help and suggestion.
Thanking you,
Regards,
Sunil Roy
ERI, University of Tokyo
Replies
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Re: Record section with azimuth - Geo . - 2017-10-06 18:56:24
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Re: Record section with azimuth - Sunil . - 2017-10-07 11:15:39
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Re: Record section with azimuth - Craig Jones - 2017-10-06 22:17:17
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Re: Record section with azimuth - George Helffrich - 2017-10-07 13:38:00
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Talal
Dear SAC users and experts,
I used SAC and GMT for years on Unix Solaris for years. But, now I don't
have the same OS (Unix Solaris).
So, I want to create a new environment for my bash and shell programs code
that I have already established before.
Which is easier and problem free of bugs. Creating a Linux environment
(Ubuntu) or working under windows with Cygwin.
Does my bash and shell programs code that I have created before will work
will on windows Cygwin or Ubuntu Linux environment?…
[more]
