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 2016
Mike Padgett
2016-04-23 20:15:15
- 2016-04-28 17:40:02
Can someone in the SAC network refer me to an individual who can answer questions about field filter settings at IU-QSPA?
The detectors and time frames of interest are:
VH1, VH2 and VHZ
Locations 00, 10, 20, 50 and 70
Time range: 2001 – 2012
Question: Were hardware filters set in the field and if so, what were the settings?
Any help would be most appreciate,
Mike Padgett
Replies
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Re: Question regarding field filter settings at IU-QSPA and a contact individual - Milton Plasencia - 2016-04-24 05:06:30
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Re: Question regarding field filter settings at IU-QSPA and a contact individual - Mike Padgett - 2016-04-24 04:04:34
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Re: Question regarding field filter settings at IU-QSPA and a contact individual - Chad Trabant - 2016-04-28 17:40:02
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Abhash Kumar
Hi,
I am using SAC transfer function to correct for the instrument response
as shown below:
SAC> r 2012.159.22.19.00.0195.IU.RSSD.10.BHZ.M.SAC
SAC> rmean
SAC> trans from evalresp fname RESP.IU.RSSD.10.BHZ to vel freqlimits 1 3 10
20
SAC> w 2012.159.22.19.00.0195.IU.RSSD.10.BHZ.M.corrected.SAC
I made an overlapping plot (waveform comparison.png) for the raw data and
instrument response corrected data. The amplitude of instrument corrected
data is exceptionally small. I was wondering if …
[more]
Replies
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Re: SAC help - Milton Plasencia - 2016-04-28 13:21:38
Aderson Nascimento
Hi All,
I have an acceleration record from RefTek 131A 02/03 accelerometers with
130-GSN recorders. I am sending one of these records. It's a record of a
quarry blast approx. 1 mile away.
I've found a site (
http://ds.iris.edu/NRL/sensors/reftek/reftek_rt131_sensors.html) with
gains, A0 and sensitivity values leading to a constant value of 606627179.7.
>From what I know these sensors have flat amplification from DC values to
500Hz. So, in practical terms to obtaing acceleration values, one sh…
[more]
No replies
mehrdad ansari
hello
can you help?i face with an error when stacking,ERROR 1801: Header field mismatch:i use this script to stack my sac files,#!/bin/bash
# Written by Ansaripour
address_data=/home/mehrdad/CCF
cd $address_data
for fol in `ls`
do
cd $fol
for pairst in `ls` ; do
cd $pairst
ls *RR* | awk '{print "r "$1"\nrmean\nrtr\nw over"} END {print "q"}' | sac
ls *RR* | awk '{if (NR==1) print "r "$1;else print "addf "$1} END {print "div "NR"\nw stack.rr\nq"}' | sac
ls *ZZ* | awk '{print "r "$1"\nrm…
[more]
Replies
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Re: question - Milton Plasencia - 2016-04-06 06:29:37
ansaripor@ut.ac.ir
hello
can you help me?
i face with one problem.
my sac files are very split and when i want to merge them facing with a
sac file that it has very zero.
i want cross correlation of sac files to extract green function but can not.
because the sac file after merge is not smooth.
thank you.
with kind regard
Mehrdad Ansaripour.
Replies
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Re: merge - Milton Plasencia - 2016-04-04 18:16:23
