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 April 2021

Félix Rodrigo Rodríguez Cardozo
2021-04-11 16:40:06
Dear all, One seismogram I am working with has the baseline shifted (down figure1). I tried to fix it as usual: rmean; trend. However, the axis amplitude remained exaggerated in comparison to the maximum amplitude. Then I thought to change the header values DEPMEN, DEPMAX and, DEPMIN (figure 2). Unfortunately, the problem continues (up figure1). Any suggestions will be highly appreciated. Thank you, Félix
No replies
massa@unisannio.it
2021-03-30 14:28:15 - 2021-04-09 07:16:04
Dear All, I am using the last SAC version on OSX 10.11.6 and I am running into some problems. Following I report a synthesis. Using ppk perplot … markall on and ohpf: If I pick P and S waves I can see, in the graphic window (Xquartz), only information about P waves. Moreover, if I write “ohpf NAME.txt” and then “chpf” the .txt file contains only the closing row “10”. How can I see, in the graphic window , also info about S waves? How can I write in a text file info about picked wa... [more]
Replies
Tony Saini
2021-04-06 17:44:12 - 2021-04-07 10:51:07
Dear Sir/mam, there is a problem with KZ time. actually, the year is written 12 rather than 2012 in origin time. can you help me to change this year in kz time?
Replies
Guust Nolet
2021-04-06 09:04:22 - 2021-04-06 20:08:05
I am trying to correct Mermaid hydrophone seismograms for their instrument response, but encounter a problem with the polezero file. I am running SEISMIC ANALYSIS CODE [03/05/2020 (Version 102.0)] on a Mac Powerbook. The forward conversion from ’none’ to the instrument response works fine, but going backwards I get an error message. For example: SAC> funcgen boxcar delta 0.05 npts 2048 SAC> p SAC> trans from none to polezero S pzmm Station (-12345 ), Channel (-12345 ) Using polezero res... [more]
Replies
Sheila Peacock
2021-04-06 09:43:20
Dear SAC users, I have just had my computer upgraded to Fedora-33 from 29, and my locally compiled copy of SAC-102 has lost the ability to do command-line editing (e.g. pressing the up-arrow does not get me back to the previous command). I had compiled SAC-102 on Fedora-29 and was running it on Fedora-33, so I did "make distclean" and recompiled on Fedora-33, but with no better luck. The version of "libedit" that comes with Fedora-29 is v. 0.0.56, and with Fedora-33 is 0.0.63, and there is... [more]
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