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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sac-help@lists.ds.iris.edu
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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 March 2017

Tolga Bekler
install problem
2017-03-27 04:18:44
Hi All I would like install the newest version of sac on Linux Mint Cinnamon edition . After having untar the file (sac-101.6a-linux_x86_64.tar) I followed the whole instructions from README file, the binary sac file did not run and got I got the message as below bash: /home/tolga/softs/sac/bin/sac: cannot execute binary file: Exec format error I am using bash I also revised my .bashrc file as export sacAUX=/home/tolga/softs/sac/aux export PATH=/home/tolga/softs/sac/bin export SACHOME=/ho… [more]
Replies
pragyant prada behera
solve a problem with shell script
2017-03-25 10:25:13
Hello, I have been given a question to- Write on shell-script to Calculate H and Vp/Vs ratio of the two attached Receiver functions using Zhu-Kanamori mentod. Assume Vp=6.4 km/s. Ray parameter is stored in user4. I have attched 3 files that i have been given. Can you please help me to solve this problem in a detailed manner? info you may need- w 1 = 0.6, w 2 = 0.3 and w 3 = 0.1 average crustal P wave velocity (Vp) is chosen to be 6.4 km/s. H and Vp/Vs ratio are allowed to vary from 20-80 km (… [more]
No replies
Maria Luíza Cardoso
Deconvolution Interferometry using ambient noise
2017-03-22 19:15:18
Hello guys, I started a project to apply deconvolution interferomtry to ambient-vibration. I have to deconvolve waveforms over 10 days of data. I only find information about deconvolution related to instrument response. Does anyone knows anything that could help me? Kind regards, Maria.
No replies
Seth Carpenter
newest SAC version
2017-03-21 20:18:29
I found documentation for a sac command that I am interested in: http://www.geophys.geos.vt.edu/snoke/sac-manual/commands/rotinc.html However, apparently this command is in a newer version of SAC than I am using and which is not yet available at IRIS. Does anyone know how I can get the newer version, apparently v 102.0? Thanks greatly for your help! Seth ============================================================= N. Seth Carpenter Seismologist Kentucky Geological Survey 228 MMRB, Univers… [more]
Replies
Sachin Tiwari
How to normalize my sac files in SAC
2017-03-16 23:10:24
Dear SAC users, I am new to sac. I have bunch of sac files which I want to normalize in sac. Can you please provide me some guidelines how to do it. For your reference two sac files are attached with this email. Any help in this regard will really be appreciated. Thanks a lot. -- *Sachin Kumar * *Junior Research Fellow (JRF)* *Dept. of Applied Geophysics* *Indian School Of Mines, Dhanbad* *Jharkhand- 826004, India.* *Mobile No.:+91-7631056163, +91-8540016927* *Email : **sachinism15@gmail.co… [more]
Replies
pragyant prada behera
sac error
2017-03-13 17:43:21 - 2017-03-14 01:04:38
while i run a shell scipt to rotate the data file,i am getting an error: ERROR 2001: Command requires an even number of data files. Can u please help me how to debug this error??
Replies
‪mehrdad ansari‬ ‪
hi
2017-03-11 13:21:54
Hello  Dear IRISHow  can I change amplitude of sac files that were constructed with fg command? With Kind Regards
No replies
‪mehrdad ansari‬ ‪
Funcgen
2017-03-11 10:14:38
Hello  Dear IRIS I have question.I can not generate random noise with npts 1201.why?I use this "fg random npts 1201 delta 1 With Kind Regards
No replies
Andrea Pérez
PDCC's NRL Tool
2017-03-09 06:39:35
Hello, I'm using the NRL Tool in PDCC to append a datalogger selection to an NRL Sensor, however, when I try to install the Nominal Response Library catalog I get this error message: Mar 08, 2017 6:06:46 PM edu.iris.nrl.gui.NrlToolGui init SEVERE: NRL Catalog Errors Found edu.iris file:/home/lennin/PDCC-3.8/NRL/index.txt: /home/lennin/PDCC-3.8/NRL/edu.iris/index.txt: /home/lennin/PDCC-3.8/NRL/edu.iris/index.txt (No existe el archivo o el directorio) Could not find any sources. I would be rea… [more]
No replies
Ardavan Aryana Parsi
IPUO
2017-03-06 23:44:08 - 2017-03-07 02:06:54
Hi, How can I change the location and font size of text that appear on plot? Also, what does IPUO mean and how can I change it to P when I do ppk? Thank you, Sherry Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
Replies
  • Re: IPUO - George Helffrich - 2017-03-07 02:06:54
Andrea Pérez
DECONVOLUTION WITH SAC
2017-03-02 06:06:24 - 2017-03-02 17:28:20
Hello. I'm trying to run a deconvolution of a real seismogram to remove the instrument response, introducing the file that contains the real seismogram (which has an ascii format) and the response of the instrument (a REF TEK RT151B-30) which I found on the IRIS website: "http://ds.iris.edu/NRL/sensors/reftek/reftek_rt151_sensors.html" as a RESP file. I have been trying to accomplish it, but haven't been able to, even though I follow the steps as the manual indicates. I may be doing something w… [more]
Replies
Maria Luíza Cardoso
ERROR 108: File does not exist: overlap
2017-02-23 14:41:38 - 2017-03-02 14:14:37
Hi everyone Suddenly I'm having this problem with MERGE command and I don't know why. I tried to merge several SAC files using 'merge overlap average' however keeps appearing the following message: SAC> r *n 1305_2016.146.13.05.33.n 1311_2016.146.13.11.37.n 1400_2016.146.14.00.00.n 1500_2016.146.15.00.00.n 1600_2016.146.16.00.00.n 1700_2016.146.17.00.00.n 1800_2016.146.18.00.00.n 1900_2016.146.19.00.00.n 2000_2016.146.20.00.00.n 2100_2016.146.21.00.00.n 2200_2016.146.22.00.00.n 2300_2016.146… [more]
Replies
pragyant prada behera
about install process of sac
2017-03-02 01:03:34
in which folder should i extract sac ? in my laptop,it is showing that sac can't be moved to "Computer " folder . so i extracted sac in " Home". can i get a detailed procedure for installing sac?
No replies
Josphat Mulwa
Source Time Function (STF)
2017-02-22 18:54:22 - 2017-03-01 20:38:29
Hi, Anyone using STF for waveform modeling? I have downloaded stf from http://www.eri.u-tokyo.ac.jp/ETAL/KIKUCHI/; unzipped and untared giving me two directories: Main, Subroutine and one text file: Makefile(text file). How do I compile the Fortran codes in Main so as to end up with the following: mk_conv.farm.pl i_conv.farm sacmacro i_plotw i_green i_inversion i_graphics jb.ptime jb.stime jb.table fort.22 Regards, Josphat ----------------------------------------- The University of Nair… [more]
Replies
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