SAC Help

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

This list has moved to https://groups.google.com/a/earthscope.org/g/sac-community.
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Help

Help lists are for submitting support questions. Anyone can post a question for NSF SAGE (or another team) to answer.

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Active Message Threads for June 2014

John
SAC merge
2014-06-19 16:14:53 - 2014-06-19 22:57:13
Hi friends, I will appreciate if someone could tell me how works the command sac "merge" I do as the manual says but it doesn’t merge anything. I have tons of information to merge; each sac file has 10 minutes window time I need each file in 60 minutes , my mates says I need an script. Does someone have a model script or another way to merge my files. Thanks in advance for your answers.
Replies
radia
GAPS
2014-06-17 19:14:30 - 2014-06-17 19:25:58
Hello every one, Can SAC evaluate the length of a gap in a time series ? thank you in advance for your answers ! -- KHERCHOUCHE Radia Doctorante en Géophysique Laboratoire de Géophysique rkherchouche@usthb.dz Université des Sciences et de la Technologie Houari Boumediene BP 32 El Alia ALGER
Replies
  • Re: GAPS - George Helffrich - 2014-06-17 19:25:58
Geo .
blackboard variables
2014-06-16 19:30:34 - 2014-06-16 22:28:51
Hello, I have noticed that blackboard variables declared with an underscore (e.g. MIN_NPTS) cannot be recalled (e.g. %MIN_NPTS). Is this a bug or standard syntax? I am using SAC version 101.6. Many thanks! Januka. -- Januka Attanayake Postdoctoral Research Associate Laboratório de Sismologia Complexo Interdisciplinar Departamento de Física Instituto Superior Técnico Av. Rovisco Pais, 1 1049-001 Lisboa, Portugal Honorary Research Associate University College London University email: januka… [more]
Replies
reza
Overly Plots
2014-06-15 00:10:25
Hi every one, I have two separate ASCII files. For instance: x1: 10 23 15 26 8 32 and x2: 3 40 20 46 7 8 I want to read by readalpha and plotxy each one with its specific symbol in one figure. Please let me know your solutions. Reza
Replies
Cuiyan Kong
How to choose frequency for structural analysis
2014-06-11 22:29:38 - 2014-06-12 17:48:16
Hi friends, I am trying to obtain the accelerogram by removing the instrument response which need to be defined the freqlimit. May I know how to select the freqlimit for structural analysis? Any help would be appreciated. Thanks a lot. Tracy
Replies
Hamidatul Husna Matondang
Pole and Zero of Butterworth Filter in SAC
2014-06-09 01:14:57 - 2014-06-10 17:10:07
Dear Sir My research is filtering in  seismic signal. If I apply butterworth filter to my signal in SAC, I only get the result of the filter. I want to know how much the value of pole and zero of Highpass Butterworth Filter in SAC. Could you tell me, please. Thank You Very Much. Regards Ami
Replies
Tiegan Hobbs
Sumstack Alignment
2014-06-09 03:56:26 - 2014-06-09 12:56:23
Hello, I'm wondering if there is a way to align my traces before adding them to my stack list in the signal stacking subroutine. I've got manual picks under T2 and I can cut around that, but I don't know how to align them for use in sss. I'd prefer not to use the delay feature when I'm adding the files, but it's a large dataset and I'd prefer not to. Regards, Tiegan Hobbs MSc Candidate University of Victoria, BC, Canada
Replies
Hamidatul Husna Matondang
Pole and Zero of Butterworth Filter in SAC
2014-06-09 01:16:59
Dear Sir My research is filtering in  seismic signal. If I apply butterworth filter to my signal in SAC, I only get the result of the filter. I want to know how much the value of pole and zero of Highpass Butterworth Filter in SAC. Could you tell me, please. Thank You Very Much. Regards Ami
No replies
John
Mseed2sac
2014-05-31 00:35:42 - 2014-06-05 23:34:29
Hi dear friends, I can't install "mseed2sac" in windows 8, I downloaded from IRIS but I think I'm doing sth wrong, it does not recognize any command. I will appreciate any help. Regards.John C.
Replies
julie
overlay plots + markers
2014-06-04 23:36:37
Hi, Is there a way to overlay several plots together with the time markers (t0 t1 t2 etc...)? Plot2 overlays several plots but does not put the markers, plot1 puts the markers but does not overlay plots.. Thanks for your help! Julie
Replies
radia
Help !
2014-06-01 21:56:37 - 2014-06-03 13:29:55
Hello dear freinds, My problem is that i have 2 files : The first one starts at 00.00.09.7617 and finishes at 15.45.17.252 and the seconde one starts at 15.45.01.2525 and finishes at 00.00.00.0025 (next day) I would like to merge this to files, we can see that we have an overlap, so i cut the end of the first one to correspond to the begining of the first on but when i cut and i changed the header variable i saw that it was not changed. These are the commands used to cut the first file ​​… [more]
Replies
  • Re: Help ! - George Helffrich - 2014-06-01 23:37:12
  • Re: Help ! - Milton Plasencia - 2014-06-03 13:29:55
Geo .
Re: sac-help Digest, Vol 104, Issue 1
2014-06-02 17:50:47
Hello, You have to apply the cut first and then read in the file for CUT to work (strange eh?). For example, CUT ON CUT 1.661700e+01 5.670325e+04 READ x.sac WRITE OVER Januka. On 1 June 2014 20:00, <sac-help-request@iris.washington.edu> wrote: > Send sac-help mailing list submissions to > sac-help@iris.washington.edu > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.iris.washington.edu/mailman/listinfo/sac-help > or, via email, send a message with … [more]
No replies
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