[SAC-HELP] help with response

maath alomari maathalomari at yahoo.com
Fri Jun 8 10:13:52 PDT 2007


> Dear All,
> I am trying to remove the response from the waveform
> I
> downloaded from IRIS
> my platform is GSAC Under CYGWIN,
> 
> I did the following:
> 
> 1.Downloaded RESP file for the station from
> RESPONSES
> folder of IRIS
> 2. I used the following shells:
> A.
> #!/bin/sh
> evalresp EIL BHZ  1996 200 .01 10.0 100 -f
> RESP.GE.EIL..BHZ -u vel \
>  -n GE -t 00:00:00 
> 
> 
> sacevalr -DEMEAN True -TAPER True  -FREQLIMITS 0.01
> .02 5.0 20.0 \
>  -AMP AMP.GE.EIL..BHZ  -PHA PHASE.GE.EIL..BHZ \
>  -SACIN GE.EIL..BHZ.R.SAC -SACOUT GE.EIL..BHZ.Sac
> 
> and with other variant:
> B.
> #!/bin/sh
> evalresp EIL BHZ  1996 200 .01 10.0 100 -f
> RESP.GE.EIL..BHZ -u vel \
>  -n GE -t 00:00:00 
> 
> 
> sacevalr -DEMEAN True -TAPER True   \
>  -AMP AMP.GE.EIL..BHZ  -PHA PHASE.GE.EIL..BHZ \
>  -SACIN GE.EIL..BHZ.R.SAC -SACOUT GE.EIL..BHZ.Sac
> 
> 
> 3. It sems OK but when I tried to do_mft on the
> resulting file I got an empty disp
> window with nothing in it , after exiting I found
> the
> following message: 
>  GPV: nper = 0 check aa,bb,cc
> NUM_PERIOD 0
> NUM_DISP   0
> .dsp
> 
> 4. I examined the resulted file with pltsac CMD it
> was
> ok
> 
> 4.What is wrong with my code. Any suggestions?
> 
> Thanks
> Dr Maath Alomari
>  
> 
> 
>      
>
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