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
Type
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 February 2014

Jechan Park
I got a error message "sac.exe.stackdump" after pressing 'Tab' key
2014-02-27 03:38:39
Hi I always use SAC to confirm seismogram So, i want to make full filename for 'Tab' key Then I always take a error message following ... Exception: STATUS_ACCESS_VIOLATION at rip=0018016874A rax=00000006000697C0 rbx=00000003EC34D6B4 rcx=0000000000000000 rdx=00000006000697C0 rsi=00000006000696E0 rdi=00000003EC327C00 r8 =00000006000696E0 r9 =0000000000000500 r10=0000000000240000 r11=00000003EC3282BF r12=000000060006C5D0 r13=00000003EC34DF60 r14=000000000000000A r15=00000003EC327C00 rbp=00000… [more]
No replies
Neil Selby
Error messages from getfhv etc
2014-02-26 00:21:15 - 2014-02-26 04:32:31
The sac_i/o functions getfhv, getihv etc print error messages to standard output if the related header variable is not defined, e.g.: ERROR 1336: Undefined header field value. DEPMIN this seems an undesirable behaviour to me, since the functions already return an error value that the programmer can handle in their own way. Is this the designed behaviour or is it something peculiar about my set-up that can be changed? many thanks, Neil
Replies
John
short mouse cursor
2014-02-25 00:39:14 - 2014-02-25 18:30:05
Dear, I have a problem with my mouse cursor because is too short, when I'm picking phases. I have friends that use SAC and their mouse cursos is a completly cross in almost all the screem. I`m running SAC in Linux from SO Windows by Virtual Box Regards and thanks a lot
Replies
Blaine Bockholt
Transfer problem
2014-02-19 05:57:27 - 2014-02-21 21:50:38
I am attempting to remove the instrument response of some data. I downloaded the RESPFILE from IRIS and while using the evalresp option of transfer, I get the following error: "WARNING (norm_resp): computed and reported sensitivities[ET.CPCT.00.HHE] differ by more than 5 percent." I thought the final sensitivity at the end of the file is the product of all the different gain/sensitivities of each stage. When I calculate it by hand, I get the sensitivity reported. I am not sure where this… [more]
Replies
Tsai cheng yung
Help-sac pick
2014-02-21 10:13:53
Dear all, Iwant to know the value between file zero time to event pick time, what can I do? thanks for your reading SAC> apk L003EP 2 13103112 0 3.75 L003EP 2 13103112 0 6.11 L003EP 3 13103112 0 7.60 SAC> lh a FILE: L003.HHE.TW.-- - 1 -------------------- a = 3.750000e+00 FILE: L003.HHN.TW.-- - 2 -------------------- a = 6.110000e+00 FILE: L003.HHZ.TW.-- - 3 -------------------- a = 7.600000e+00
No replies
Tsai cheng yung
Help-sac
2014-02-21 09:58:07
DEAR All, As below, I show the result after using 'apk'': L001EP 2 13103112 0 3.91 L001IP 1 13103112 0 2.62 L001EP 2 13103112 032.72 L001 is my station name,but I didn't understand othrers information it presented. es, EP 2 & 0 3.91 , 0 2.62, 032.72 ... THANKS FOR YOUR READING!! Marcus
No replies
Steve Gao
memory corruption
2014-02-21 05:53:23
All, Just wondering if there is an easy solution to the strange problem. sac *** glibc detected *** sac: malloc(): memory corruption: 0x09aa7668 *** ======= Backtrace: ========= /lib/libc.so.6[0x43e1dd] /lib/libc.so.6(__libc_malloc+0x67)[0x43fd97] sac[0x804c79d] sac[0x805369d] sac[0x804f091] sac[0x804b15b] /lib/libc.so.6(__libc_start_main+0xdc)[0x3e9e9c] …. The strange thing is that this only happens to one of the many user account, and the setup files (.cshrc etc.) are ide… [more]
No replies
Ali Abdolali
Vertical Velocity add Acceleration evaluation
2014-02-19 18:39:37
Dear list members As I am a new user of SAC not familiar with seismograms, I have faced some primiliary questions. I would appreciate if you guide me. -I am looking for vertical components of velocity and acceleration from seismograms. So I used the TRANSFER function of SAC applying on LHZ seismogram. I used respond file and PZ files as follows and gained similar results for vertical velocity. Regarding the acceleration the results are zero!!!. How I can evaluate vertical acceleration? If I c… [more]
No replies
Tsai cheng yung
Phase picking
2014-02-19 14:17:09 - 2014-02-19 15:50:36
Hello,I have some problem about phase picking.That is command ''apk''!After I using apk, I can't understand the picking time it has show.ex: 030.12 or 3 2 .02 second problem is :I thick the picking result is inaccurate at all.ARE there ways to solve it?THANKS FOR YOUR READING! Marcus Tsai
Replies
Patty
FIR filter part of the instrument response
2014-02-19 04:18:11 - 2014-02-19 15:27:30
Hi all, I have two RESP files. These two are very similar except numerator coefficients are different at 3 stages. Gain and sensitivity values are all the same. But it seems to me that SAC does not have a way to keep track of the digital/FIR filter part of the instrument response. Therefore, no matter which RESP file I used, the amplitudes of traces after removing instrument response are still the same. but it should be 2.94 times different. Do anyone have a clue how we can retrieve a pole-… [more]
Replies
Tsai cheng yung
Help - phase picking
2014-02-19 14:30:58
Hello,I have some problem about phase picking.That is command ''apk''!After I using apk, I can't understand the picking time it has show.ex: 030.12 or 3 2 .02 second problem is :I thick the picking result is inaccurate at all.ARE there ways to solve it?THANKS FOR YOUR READING! Marcus Tsai
No replies
Shekar
Instrument responce files
2013-11-27 14:03:22 - 2014-02-18 20:03:10
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
Januka Attanayake
TRANSFER Issue
2014-02-17 17:58:58 - 2014-02-18 03:25:15
Hello,  I have trouble using the TRANSFER function with the  networks II and IU. Other networks I have works fine. I have an example .SAC and polezeros file here if anyone would like to check this issue out. http://tiny.cc/57sfbx   For example, when I run the following commands, SAC> r 2011.069.17.21.38.3195.II.ASCN.00.BHZ.Q.SAC SAC> TRANSFER FROM POLEZERO SUBTYPE SAC_PZs_II_ASCN_BHZ_ TO NONE FREQ 0.001 0.002 20 25 I get the error   Time of data not found in file  Date Time: 2011/03/10 (0… [more]
Replies
firdaus
saclab files
2014-02-16 10:49:56 - 2014-02-16 11:39:18
dear all, i've read and download all matlab's file in http://web.utah.edu/thorne/software.html currently, i'm using ubuntu 12.04, sac.106 and matlab 7.14 i've tried to execute rsac.m and p1.m in matlab, but i've error's message as below: >> rsac >> p1 Index exceeds matrix dimensions. Error in p1 (line 44) [a,b]=size(varargin{nargin}); Before executing these files, i've renamed my sac's file to be varargin.sac. However, this error's message always come up in matlab's message. please help … [more]
Replies
Sunil Kapur via LinkedIn
Sac Help, please add me to your LinkedIn network
2014-02-14 02:49:22
LinkedIn ------------ Sunil Kapur requested to add you as a connection on LinkedIn: ------------------------------------------ Sac Help, I'd like to add you to my professional network on LinkedIn. - Sunil Accept invitation from Sunil Kapur http://www.linkedin.com/e/-9ou29g-hrmdt4x8-2s/ubIx8rFs5oSdYQa2oQHQ-lofPc2q7sw6cHvfFlhxuru/blk/I545556235_125/e39SrCAJoS5vrCAJoyRJtCVFnSRJrScJr6RBfnhv9ClRsDgZp6lQs6lzoQ5AomZIpn8_dj8NnPkPczoRdjkQdkALrjcNcRBQi34LcP0PcPANcP0Nc38LrCBxbOYWrSlI/eml-c… [more]
No replies
Ashraf
How to install??
2014-02-13 23:32:29
Hi, dear Sir, I resend this message as alternative to a message sent before but held because of size and the subject was (A problem in the installation process). the original message is: When I applied to get the SAC, I received this message under text with the attached code, my problem is that I want to install the on windows 7. Please tell me how to do it. Best regards, Ashraf
Replies
Ashraf
How to install??
2014-02-13 23:32:28
Hi, dear Sir, I resend this message as alternative to a message sent before but held because of size and the subject was (A problem in the installation process). the original message is: When I applied to get the SAC, I received this message under text with the attached code, my problem is that I want to install the on windows 7. Please tell me how to do it. Best regards, Ashraf
No replies
Ashraf
A problem in the instalation process
2014-02-13 23:22:13
Hi, dear Sir, When I applied to get the SAC, I received this message under text with the attached code, my problem is that I want to install the on windows 7. Please tell me how to do it. Best regards, Ashraf ________________________________ From: Gale Cox [gale@iris.washington.edu] Sent: Tuesday, February 11, 2014 8:14 PM To: Ali Ashraf Cc: Gale Cox Subject: Re: SAC Software Request v101.6a-SAC Source Code Attached is the compressed tar file with the source code and makefiles for SAC v… [more]
Replies
Wisawet Wongwai via LinkedIn
Sac Help, please add me to your LinkedIn network
2014-02-13 06:26:18
LinkedIn ------------ Wisawet Wongwai requested to add you as a connection on LinkedIn: ------------------------------------------ Sac Help, I'd like to add you to my professional network on LinkedIn. - Wisawet Accept invitation from Wisawet Wongwai http://www.linkedin.com/e/-9ou29g-hrl6491h-4/ubIx8rFs5oSdYQa2oQHQ-lofPc2q7sw6cHvfFlhxuru/blk/I545059745_125/e39SrCAJoS5vrCAJoyRJtCVFnSRJrScJr6RBfnhv9ClRsDgZp6lQs6lzoQ5AomZIpn8_dj8NnPkQdPARc3kQdkALs6BWmCtQczsLe30NczwVejsMc38LrCBxbOYWr… [more]
No replies
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