SAC Help

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

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Active Message Threads for August 2018

Wenkai Song
2018-08-23 01:17:12 - 2018-08-23 15:47:22
Hi, In order to make the B and KZTIME of the three components consistent, I conducted "synchronize" command. The SAC informed: ERROR    0: Resulting error from shift exceeded tolerance (1e-6): 0.0005. Could you tell me what the error is and how can I fix it, please? The attached files are the original files that yielded errors. Thank you!
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claudia pavez
2018-08-18 07:26:25
Hi everyone, I need to install the auxiliary routines hk and setrfslow to make RF analysis. This seems to be quite heavy, anyone installed these routines? Please I need some help to do it thank you in advance Claudia PhD in Sciences/Geology
No replies
berugirl@naver.com
2018-08-13 05:06:09 - 2018-08-18 05:41:33
Hello, Is it possible picking SKS phase in SSS? for S phase picking I used following command. SAC> sac SAC>r *SAC SAC>sss SAC>traveltime phase S picks 0 verbose SAC>qs SAC>w over but, if I try SKS it answered "traveltime: error finding phase SKS."
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NANNI Ugo
2018-08-15 20:25:02 - 2018-08-17 01:42:43
Hi, I am using SAC on debian and I have encountered a problem using the MERGE function. The problem I have is the same as the one discussed 2015 : https://seiscode.iris.washington.edu/issues/683 My problem is that the MERGE option GAP interp does not works correctly. I have attached you three files, m1.SAC, m2.SAC and m1m2.SAC the result from MERGE gap interp overlap average. I cannot use gap zero because the signals are not centered in zero and have a different mean. One solution could be ... [more]
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claudia pavez
2018-08-14 21:22:07 - 2018-08-14 23:53:05
Hi! Problem installing SAC in Ubuntu =( The software is ready, but when I try to run it, this message appears: ERROR: Environmental variable SACAUX not defined I read in some pages that I have to modify the .bashrc file, but this is done, and still not working. This is my bashrc file: # SAC Environment variables export SACHOME=/usr/local/sac # change to your sac dir. export PATH=$PATH:$SACHOME/bin export SACAUX=$SACHOME/aux export SACLIB=$SACHOME/lib/sacio.a export SAC_USE_DATABASE=0 expo... [more]
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Sachin Tiwari
2018-08-13 22:46:00 - 2018-08-13 23:10:28
Dear All, I am trying to extract a .seed file to .sac using rdseed software. The following command is being used for the extraction and the associated error is also given below: *mohit@mantle:~/Downloads$ rdseed -f 2012-01-21-18-47.seed -R -d -o 1<< IRIS SEED Reader, Release 5.3.1 >> R = print response data (with addressing for evresp) d = read data from tape Taking input from 2012-01-21-18-47.seedOutput data format will be sac.binary.INFO: sac variable EVDP will be in KILO... [more]
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Hello again Kris, In that case your PZs file should reflect that (see the INPUT UNIT), which would translate into modifications of SENSITIVITY and A0 based on instrument specification. Januka On Fri, 10 Aug 2018 at 07:13, Phillips-Alonge, Kristin E CIV DTRA R AND D (US) <kristin.e.phillips-alonge.civ@mail.mil> wrote: > Yes, the input is always counts. But the input in counts could be > proportional to either displacement, velocity, or acceleration depending on > the instrument. Accord... [more]
No replies
Phillips-Alonge, Kristin E CIV DTRA R AND D (US
2018-08-09 20:55:05 - 2018-08-10 13:51:04
Hello, I have some IRIS data converted to SAC format along with the corresponding polezero files and want to use "transfer" along with the pzfiles to perform the deconvolution to remove instrument response. I know that the SAC transfer function is expecting a displacement input. If I am using "TRANS FROM POLEZERO S %pzfile to NONE" or "TRANS FROM POLEZERO S %pzfile to VEL" and my input actually is a displacement, I expect the output to be the displacement for the first command and velocit... [more]
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