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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Active Message Threads for November 2013

Shekar
Instrument responce files
2013-11-27 14:03:22 - 2013-11-27 16:10:26
Hai all Any body has the instrument response file(PZ file) for the following combination 1. Taurus digitizer+ Trillium 240 seismometer(240 sec, 1500v/m/s) 2. Reftek 72A+ CMG 40T(30 sec, 800 v/m/s) Thank you very much. shekar On Tue, 26 Nov 2013 15:21:35 +0530 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 em… [more]
Replies
Milton Plasencia via LinkedIn
Sac Help, please add me to your LinkedIn network
2013-11-26 23:09:51
LinkedIn ------------ Milton Plasencia requested to add you as a connection on LinkedIn: ------------------------------------------ Sac Help, Build your professional network, discover opportunities, and keep in touch with me on LinkedIn. - Milton Accept invitation from Milton Plasencia http://www.linkedin.com/e/-9ou29g-hoha6j5v-3s/ubIx8rFs5oSdYQa2oQHQ-lofPc2q7sw6cHvfFlhxuru/blk/I505932437_125/e39SrCAJoS5vrCAJoyRJtCVFnSRJrScJr6RBfnhv9ClRsDgZp6lQs6lzoQ5AomZIpn8_dj8NnPsPd38PejkMdkA… [more]
No replies
Shekar
Insert hedder
2013-11-26 17:34:41
(no body)
No replies
Milton Plasencia
Re: Insert hedder
2013-11-26 14:45:34
Hi, Use > ch O GMT 2009 318 13 03 34 300 where 318 is the Julian day corresponding to month 11 and day 14. HTH, Milton P. Plasencia Linares mpplasencia@gmail.com On Nov 26, 2013, at 6:34 AM, shekar <m_shekar2k2@rediffmail.com> wrote: > Dear all, > > I have a SAC file converted from SEISAN. > > How to insert the origin time(2009-11-14-13:03:34.300) of the event in sac header? > > Thanks in advance > > Shekar > > > On Mon, 18 Nov 2013 22:14:49 +0530 wrote > >Send sac-help mailing li… [more]
No replies
sahar sadri
waveform correlation
2013-11-26 03:42:18
Dear friends I don't know how to correlate any two waveforms(pairwisely) in a folder. As you know by "sac_wfcc" we can correlate the master waveform(the first one in the folder) with the others but the loop does not mean in it! sac_wfcc gives also cc coefficient and delay time. I'll be grateful with any Help of you -- S.Sadri
No replies
Metin Kahraman
run sac macro in a shell script
2013-11-22 23:29:07
Dear sac users, I having a problem which you may come across before with the error. my problem is, I would like to run simple sac macro in a shell scrip. the reason of this if I have too much file in the folder sac macro gives a segmentation fault which I can not relate with anything. so I am trying to give sac file 3 component by 3 component in the sac macro. But the thing is I do this, setbb command in the macro does not work. I attached my shell and macro files, any help will be grat… [more]
No replies
Jesse Hutchinson
Multiple Questions
2013-11-20 00:27:28 - 2013-11-21 18:37:35
Hello, I am a fairly new user of SAC. I am using it on CentOS. I have imported events from an Antelope database into SAC files for each event (the events were actually extracted based on the presence of converted phases, such as sP and pS waves). I have also adjusted the 0 time for the files to be at the same time as the first arrival, so that the P phase is always at 0, and all of the other phases have been adjusted correspondingly. I have encountered a couple of difficulties however. The f… [more]
Replies
Cory Reed
Transfer Function Error 2118
2013-11-18 18:44:35 - 2013-11-18 22:33:10
I am attempting to remove the instrument response for various stations using the following command lines, similar to the SAC tutorials: SETBB RES "RESP.IU.CCMxxx.BHE" READ [input .sac file] RTR TAPER TRANSFER FROM EVALRESP FNAME %res TO NONE FREQLIM 0.004 0.007 0.2 0.4 When I call the transfer function, I receive the following: WARNING: no response found for NET=IU, STA=CCM, LOCID=*, CHAN=Q, ... and a final error message (#2118) which states that no transfer function has been applied. My … [more]
Replies
Fiona Darbyshire
Calculation of AZ and BAZ in SAC
2013-11-18 16:01:33 - 2013-11-18 22:24:45
Hello, Could someone tell me a bit more about how AZ and BAZ are calculated in SAC? Up to now, e.g. when binning receiver functions, I have used BAZ and GCARC to group them together, and that's always seemed to work, so I've always assumed that the BAZ/GCARC (or DIST, I imagine) pair gives you a unique position from the point of interest (the station). This time, I have some data output that is expressed in AZ and DIST. I assumed (perhaps naively?) that this would also allow successful spati… [more]
Replies
Hamidatul Husna Matondang
Remove Response Instrument
2013-11-18 00:07:33
I am working on a local magnitude research. I want to remove response instrument from the data and simulate the response of Wood Anderson seismograph. What should I do? I have a few questions : 1. Which one the true procedure and command in SAC :    a) SAC> trans from evalresp to none       and then       SAC> trans from polezero subtype "file name.pz" to none    b) SAC> trans to polezero subtype "wood anderson file name.pz"    c) SAC> trans to wa    d) SAC> trans from polezero subtype "sati… [more]
Replies
Milton Plasencia
Re: Remove Response Instrument
2013-11-17 22:29:15
look below, ********************************** Milton P. PLASENCIA LINARES Dipartimento Centro di Ricerche Sismologiche Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS Borgo Grotta Gigante 42/C (34010) Sgonico - TRIESTE - ITALIA Tel: +39-040-2140 256/141 Fax: +39-040-327307 E-mail: mplasencia@inogs.it ASAIN (Antarctic Seismographic Argentinean Italian Network) ********************************* Quoting "amik Amik" <amik.mamat@yahoo.co.id>: > I am working on a local m… [more]
No replies
Frederik Tilmann
sort and plot commands don't play
2013-11-13 17:49:48
I have a problem in that the plot commands (p1,ppk) do not show the files in the same order as they are listed in memory after a sort. What I am trying to do is to display a north- to south record section of noise correlation functions with respect to a target station. The coordinates of both stations are place in evla and stla, but it is not well defined in which variable a given station ends up in (evla, or stla). So to plot all the functions relative to J10S I use r sumtraces-nonorm-… [more]
Replies
LeRoy Dorman
"magic" entries for SAC files in Linux
2013-11-13 07:13:10
(no body)
No replies
Amr El-Sharkawy
Body wave magnitude using SAC
2013-11-10 13:06:34 - 2013-11-11 17:50:35
My Dear Professors and collegues I appreciate very well if you please can tell me how to calculate the body wave magnitude and surface wave mgnitude using the SAC software I am waiting your kind response Regards amr   Amr El-Sharkawy Seismologist, National Research Institute of Astronomy and Geophysics, (NRIAG), Egypt. e-mail:   amr_elsharkawy22@yahoo.com               amr_elsharkawy22@nriag.sci.eg Mobile: 01090201009
Replies
sahar sadri
change header
2013-11-05 20:03:01
Dear Sir /Madam i'm new to sac-help page. I think we can not find our answers good in this page.Because there is no subject research! My question: I want to add a Header called T7 to my earthquakes and give integer values to it.how can I do that for all of my earthquakes? Many Thanks Sahar Sadri
Replies
Domenico Di Giacomo
cutim problem
2013-10-30 16:09:30 - 2013-11-01 17:08:43
(no body)
Replies
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