[SAC-HELP] Instrument responce files
Milton Plasencia
mpplasencia at gmail.com
Mon Feb 17 23:20:04 PST 2014
Hi Raja,
See below
Milton P. Plasencia Linares
mpplasencia at gmail.com
On Feb 18, 2014, at 4:39 AM, Raja Babu <rjbb013 at gmail.com> wrote:
> Hi all,
>
> normalization constant in radian = (normalization constant in Hz)2π^ (numberof poles−number of zeroes)
Correct, and it is a constant (not change)
>
> for displacement normalization constant in above formula, number of zeroes will include one additional zero than velocity normalization constant.?????????
No.
You must add 1 zero to the P&Z file to convert velocity to displacement, so you multiply by omega(w).
>
> I have confusion. can anyone clear it
For a bit of clarity and details of units, see:
http://vps.isti.com/trac/ew/wiki/localmag
>
> any help will be appreciated..
>
> and thanks for help...
Cheers,
Milton
>
>
> On Wed, Nov 27, 2013 at 2:17 PM, Milton Plasencia <mpplasencia at gmail.com> wrote:
> Hi,
>
> You can consider using the PDCC software by IRIS.
> http://www.iris.edu/dms/nodes/dmc/software/downloads/pdcc/
>
> For Guralp sensor you must have the TTL value (Tap TableLookup)
> for apply the correct FIR filter combination). look here
> http://www.guralp.com/determining-fir-filter-information-from-gcf-data/
>
> HTH,
>
> m.
>
> * * * * * * * * * * * * * * * * * * * * * * *
> Milton P. PLASENCIA LINARES
>
> Centro di Ricerche Sismologiche (CRS)
> OGS - Istituto Nazionale di Oceanografia
> e di Geofisica Sperimentale
>
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>
> E-mail: mplasencia at inogs.it
>
> ASAIN (Antarctic Seismographic Argentinean Italian Network)
> *********************************
>
>
>
>
>
>
>
>
>
>
> On Nov 27, 2013, at 3:03 AM, shekar <m_shekar2k2 at rediffmail.com> wrote:
>
>> 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 at iris.washington.edu
>>
>>
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>>
>> http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>> or, via email, send a message with subject or body 'help' to
>>
>> sac-help-request at iris.washington.edu
>>
>>
>>
>> You can reach the person managing the list at
>>
>> sac-help-owner at iris.washington.edu
>>
>>
>>
>> When replying, please edit your Subject line so it is more specific
>>
>> than "Re: Contents of sac-help digest..."
>>
>>
>>
>>
>>
>> Today's Topics:
>>
>>
>>
>> 1. Re: Insert hedder (Milton Plasencia)
>>
>>
>>
>>
>>
>> ----------------------------------------------------------------------
>>
>>
>>
>> Message: 1
>>
>> Date: Tue, 26 Nov 2013 06:45:34 -0300
>>
>> From: Milton Plasencia
>>
>> Subject: Re: [SAC-HELP] Insert hedder
>>
>> To: shekar
>>
>> Cc: sac-help at iris.washington.edu
>>
>> Message-ID:
>>
>> Content-Type: text/plain; charset="us-ascii"
>>
>>
>>
>> Hi,
>>
>> Use
>>
>> > ch O GMT 2009 318 13 03 34 300
>>
>>
>>
>> where 318 is the Julian day corresponding to month 11 and day 14.
>>
>>
>>
>> HTH,
>>
>>
>>
>> Milton P. Plasencia Linares
>>
>> mpplasencia at gmail.com
>>
>>
>>
>>
>>
>>
>>
>> On Nov 26, 2013, at 6:34 AM, shekar wrote:
>>
>>
>>
>> > Dear all,
>>
>> >
>>
>> > I have a SAC file converted from SEISAN.
>>
>> >
>>
>> > How to insert the origin time(2009-11-14-13:03:34.300) of the event in sac header?
>>
>> >
>>
>> > Thanks in advance
>>
>> >
>>
>> > Shekar
>>
>> >
>>
>> >
>>
>> > On Mon, 18 Nov 2013 22:14:49 +0530 wrote
>>
>> > >Send sac-help mailing list submissions to
>>
>> >
>>
>> > sac-help at iris.washington.edu
>>
>> >
>>
>> >
>>
>> >
>>
>> > To subscribe or unsubscribe via the World Wide Web, visit
>>
>> >
>>
>> > http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>> >
>>
>> > or, via email, send a message with subject or body 'help' to
>>
>> >
>>
>> > sac-help-request at iris.washington.edu
>>
>> >
>>
>> >
>>
>> >
>>
>> > You can reach the person managing the list at
>>
>> >
>>
>> > sac-help-owner at iris.washington.edu
>>
>> >
>>
>> >
>>
>> >
>>
>> > When replying, please edit your Subject line so it is more specific
>>
>> >
>>
>> > than "Re: Contents of sac-help digest..."
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > Today's Topics:
>>
>> >
>>
>> >
>>
>> >
>>
>> > 1. Re: sort and plot commands don't play (George Helffrich)
>>
>> >
>>
>> > 2. Remove Response Instrument (amik Amik)
>>
>> >
>>
>> > 3. Re: Remove Response Instrument (Arthur Snoke)
>>
>> >
>>
>> > 4. Re: Remove Response Instrument (Milton P. Plasencia Linares)
>>
>> >
>>
>> > 5. Calculation of AZ and BAZ in SAC (Fiona Darbyshire)
>>
>> >
>>
>> > 6. Re: Calculation of AZ and BAZ in SAC (Brian Savage)
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ----------------------------------------------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 1
>>
>> >
>>
>> > Date: Wed, 13 Nov 2013 09:03:30 +0000
>>
>> >
>>
>> > From: George Helffrich
>>
>> >
>>
>> > Subject: Re: [SAC-HELP] sort and plot commands don't play
>>
>> >
>>
>> > To: Frederik Tilmann
>>
>> >
>>
>> > Cc: sac-help at iris.washington.edu
>>
>> >
>>
>> > Message-ID:
>>
>> >
>>
>> > Content-Type: text/plain; charset=us-ascii
>>
>> >
>>
>> >
>>
>> >
>>
>> > Dear All -
>>
>> >
>>
>> >
>>
>> >
>>
>> > Plotting the traces in a record section in SSS displays traces in increasing distance order.
>>
>> >
>>
>> >
>>
>> >
>>
>> > On 13 Nov 2013, at 08:49, Frederik Tilmann wrote:
>>
>> >
>>
>> >
>>
>> >
>>
>> > > I have a problem in that the plot commands (p1,ppk) do not show the files in the same order as they are listed in memory after a sort.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > What I am trying to do is to display a north- to south record section of noise correlation functions with respect to a target station. The coordinates of both stations are place in evla and stla, but it is not well defined in which variable a given station ends up in (evla, or stla).
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > So to plot all the functions relative to J10S I use
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > r sumtraces-nonorm-0.03-0.10/*ZWZW*J10?J[0-9][0-9]*_sum.sac sumtraces-nonorm-0.03-0.10/*ZWZW*J[0-9][0-9]?J10?*_sum.sac
>>
>> >
>>
>> > > sort evla ascend stla ascend
>>
>> >
>>
>> > > lh evla stla
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Everything looks good, stations are in the right order in the lh list.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > But if I then do
>>
>> >
>>
>> > > p1
>>
>> >
>>
>> > > or ppk
>>
>> >
>>
>> > > they come out in the wrong order, plotting the J03-J10 after J10-J11 (correct would have been J09-J10 as in the lh listing). I attach a screenshot demonstrating this effect.
>>
>> >
>>
>> > > I tried
>>
>> >
>>
>> > > sort commit evla ascend stla ascend
>>
>> >
>>
>> > > but this this did not make a difference.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > This is on 101.5c
>>
>> >
>>
>> > > SEISMIC ANALYSIS CODE [02/01/2012 (Version 101.5c)]
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Any ideas would be appreciated
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Regards
>>
>> >
>>
>> > > Frederik
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Output of lh command
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ23B..HHZHHZ_sum.sac - 1
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.253600e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ22B..HHZHHZ_sum.sac - 2
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.270155e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ21B..HHZHHZ_sum.sac - 3
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.287174e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ20B..HHZHHZ_sum.sac - 4
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.305374e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ19B..HHZHHZ_sum.sac - 5
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.320426e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ18B..HHZHHZ_sum.sac - 6
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.339244e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ17B..HHZHHZ_sum.sac - 7
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.355617e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ25B..HHZHHZ_sum.sac - 8
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.366659e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ15B..HHZHHZ_sum.sac - 9
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.390106e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ14S..HHZHHZ_sum.sac - 10
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.411258e+01
>>
>> >
>>
>> > > Waiting
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ13B..HHZHHZ_sum.sac - 11
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.427260e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ12B..HHZHHZ_sum.sac - 12
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.444247e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J10BJ11S..HHZHHZ_sum.sac - 13
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.460217e+01
>>
>> >
>>
>> > > stla = 5.481430e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J09BJ10B..HHZHHZ_sum.sac - 14
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.640510e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J08SJ10B..HHZHHZ_sum.sac - 15
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.617126e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J07BJ10B..HHZHHZ_sum.sac - 16
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.603592e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J04BJ10B..HHZHHZ_sum.sac - 17
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.577234e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J03EJ10B..HHZHHZ_sum.sac - 18
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.530829e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J02SJ10B..HHZHHZ_sum.sac - 19
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > stla = 5.512811e+01
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > FILE: sumtraces-nonorm-0.03-0.10/mat__ZWZW.J01EJ10B..HHZHHZ_sum.sac - 20
>>
>> >
>>
>> > > -------------------------------------------------------------------
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > evla = 5.481430e+01
>>
>> >
>>
>> > > Waiting
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > stla = 5.497167e+01
>>
>> >
>>
>> > > SAC>
>>
>> >
>>
>> > > _______________________________________________
>>
>> >
>>
>> > > sac-help mailing list
>>
>> >
>>
>> > > sac-help at iris.washington.edu
>>
>> >
>>
>> > > http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > George Helffrich
>>
>> >
>>
>> > george.helffrich at bris.ac.uk
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 2
>>
>> >
>>
>> > Date: Sun, 17 Nov 2013 16:07:33 +0800 (SGT)
>>
>> >
>>
>> > From: amik Amik
>>
>> >
>>
>> > Subject: [SAC-HELP] Remove Response Instrument
>>
>> >
>>
>> > To: "sac-help at iris.washington.edu"
>>
>> >
>>
>> > Message-ID:
>>
>> >
>>
>> > <1384675653.16429.YahooMailNeo at web190801.mail.sg3.yahoo.com>
>>
>> >
>>
>> > Content-Type: text/plain; charset="iso-8859-1"
>>
>> >
>>
>> >
>>
>> >
>>
>> > I am working on a local magnitude research. I want to remove response instrument
>>
>> >
>>
>> > from the data and simulate the response of Wood Anderson seismograph. What should I do?
>>
>> >
>>
>> > I have a few questions :
>>
>> >
>>
>> > 1. Which one the true procedure and command in SAC :
>>
>> >
>>
>> > ?? a) SAC> trans from evalresp to none
>>
>> >
>>
>> > ?? ? ?and then
>>
>> >
>>
>> > ?? ? ?SAC> trans from polezero subtype "file name.pz" to none
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? b) SAC> trans to polezero subtype "wood anderson file name.pz"
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? c) SAC> trans to wa
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? d) SAC> trans from polezero subtype "sation's file name.pz" to wa
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? e) SAC> trans from polezero subtype "sation's file name.pz" to wa to none
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? f) SAC> trans from evalresp fname RESP.SATION to wa
>>
>> >
>>
>> >
>>
>> >
>>
>> > ?? g) SAC> SAC> trans from polezero subtype "sation's file name.pz" freq 0.005 0.01 1.0 2.0
>>
>> >
>>
>> >
>>
>> >
>>
>> > 2. What the different utilizing of Response File and Polezero File?
>>
>> >
>>
>> > ?? I think polezero already included in responfile, is it right ?
>>
>> >
>>
>> >
>>
>> >
>>
>> > May you help me? Thank You very much
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > Sincerely Yours
>>
>> >
>>
>> > Ami
>>
>> >
>>
>> > -------------- next part --------------
>>
>> >
>>
>> > An HTML attachment was scrubbed...
>>
>> >
>>
>> > URL:
>>
>> >
>>
>> >
>>
>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 3
>>
>> >
>>
>> > Date: Sun, 17 Nov 2013 07:43:55 -0500 (EST)
>>
>> >
>>
>> > From: Arthur Snoke
>>
>> >
>>
>> > Subject: Re: [SAC-HELP] Remove Response Instrument
>>
>> >
>>
>> > To: amik Amik
>>
>> >
>>
>> > Cc: "sac-help at iris.washington.edu"
>>
>> >
>>
>> > Message-ID:
>>
>> >
>>
>> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>>
>> >
>>
>> >
>>
>> >
>>
>> > I think the best way for you to understand what the various options do is
>>
>> >
>>
>> > to try them andsave the results. The TRANSFER help file at
>>
>> >
>>
>> > has answers
>>
>> >
>>
>> > to your explicit quesitons. If anything is not clear, let me know.
>>
>> >
>>
>> >
>>
>> >
>>
>> > On Sun, 17 Nov 2013, amik Amik wrote:
>>
>> >
>>
>> >
>>
>> >
>>
>> > > I am working on a local magnitude research. I want to remove response
>>
>> >
>>
>> > > instrument
>>
>> >
>>
>> > > from the data and simulate the response of Wood Anderson seismograph. What
>>
>> >
>>
>> > > should I do?
>>
>> >
>>
>> > > I have a few questions :
>>
>> >
>>
>> > > 1. Which one the true procedure and command in SAC :
>>
>> >
>>
>> > > ?? a) SAC> trans from evalresp to none
>>
>> >
>>
>> > > ?? ? ?and then
>>
>> >
>>
>> > > ?? ? ?SAC> trans from polezero subtype "file name.pz" to none
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? b) SAC> trans to polezero subtype "wood anderson file name.pz"
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? c) SAC> trans to wa
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? d) SAC> trans from polezero subtype "sation's file name.pz" to wa
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? e) SAC> trans from polezero subtype "sation's file name.pz" to wa to none
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? f) SAC> trans from evalresp fname RESP.SATION to wa
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? g) SAC> SAC> trans from polezero subtype "sation's file name.pz" freq
>>
>> >
>>
>> > > 0.005 0.01 1.0 2.0
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > 2. What the different utilizing of Response File and Polezero File?
>>
>> >
>>
>> > > ?? I think polezero already included in responfile, is it right ?
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > May you help me? Thank You very much
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Sincerely Yours
>>
>> >
>>
>> > > Ami
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 4
>>
>> >
>>
>> > Date: Sun, 17 Nov 2013 14:29:15 +0100
>>
>> >
>>
>> > From: "Milton P. Plasencia Linares"
>>
>> >
>>
>> > Subject: Re: [SAC-HELP] Remove Response Instrument
>>
>> >
>>
>> > To: "amik Amik"
>>
>> >
>>
>> > Cc: "sac-help at iris.washington.edu"
>>
>> >
>>
>> > Message-ID: <20131117142915.910179rx5iy7g6nf at webmail.ogs.trieste.it>
>>
>> >
>>
>> > Content-Type: text/plain;charset=ISO-8859-1;DelSp="Yes";
>>
>> >
>>
>> > format="flowed"
>>
>> >
>>
>> >
>>
>> >
>>
>> > look below,
>>
>> >
>>
>> >
>>
>> >
>>
>> > **********************************
>>
>> >
>>
>> > Milton P. PLASENCIA LINARES
>>
>> >
>>
>> >
>>
>> >
>>
>> > Dipartimento Centro di Ricerche Sismologiche
>>
>> >
>>
>> > Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS
>>
>> >
>>
>> >
>>
>> >
>>
>> > Borgo Grotta Gigante 42/C
>>
>> >
>>
>> > (34010) Sgonico - TRIESTE - ITALIA
>>
>> >
>>
>> > Tel: +39-040-2140 256/141
>>
>> >
>>
>> > Fax: +39-040-327307
>>
>> >
>>
>> >
>>
>> >
>>
>> > E-mail: mplasencia at inogs.it
>>
>> >
>>
>> >
>>
>> >
>>
>> > ASAIN (Antarctic Seismographic Argentinean Italian Network)
>>
>> >
>>
>> > *********************************
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > Quoting "amik Amik" :
>>
>> >
>>
>> >
>>
>> >
>>
>> > > I am working on a local magnitude research. I want to remove
>>
>> >
>>
>> > > response instrument
>>
>> >
>>
>> > > from the data and simulate the response of Wood Anderson
>>
>> >
>>
>> > > seismograph. What should I do?
>>
>> >
>>
>> > > I have a few questions :
>>
>> >
>>
>> > > 1. Which one the true procedure and command in SAC :
>>
>> >
>>
>> > > ?? a) SAC> trans from evalresp to none
>>
>> >
>>
>> > > ?? ? ?and then
>>
>> >
>>
>> > > ?? ? ?SAC> trans from polezero subtype "file name.pz" to none
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? b) SAC> trans to polezero subtype "wood anderson file name.pz"
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? c) SAC> trans to wa
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? d) SAC> trans from polezero subtype "sation's file name.pz" to wa
>>
>> >
>>
>> > Option d) This is fine if you use the polezero station file.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? e) SAC> trans from polezero subtype "sation's file name.pz" to wa to none
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? f) SAC> trans from evalresp fname RESP.SATION to wa
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > ?? g) SAC> SAC> trans from polezero subtype "sation's file name.pz"
>>
>> >
>>
>> > > freq 0.005 0.01 1.0 2.0
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > 2. What the different utilizing of Response File and Polezero File?
>>
>> >
>>
>> > Response file include the filter (FIR) coefficients
>>
>> >
>>
>> >
>>
>> >
>>
>> > > ?? I think polezero already included in responfile, is it right ?
>>
>> >
>>
>> > Yes.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > May you help me? Thank You very much
>>
>> >
>>
>> >
>>
>> >
>>
>> > My suggest ius use:
>>
>> >
>>
>> >
>>
>> >
>>
>> > > transfer from polezero subtype "PZ file" to wa freq 0.005 0.01 1.0 2.0
>>
>> >
>>
>> >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Sincerely Yours
>>
>> >
>>
>> > > Ami
>>
>> >
>>
>> > >
>>
>> >
>>
>> > Cheers,
>>
>> >
>>
>> >
>>
>> >
>>
>> > Milton
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ----------------------------------------------------------------
>>
>> >
>>
>> > This message was sent using IMP, the Internet Messaging Program.
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 5
>>
>> >
>>
>> > Date: Mon, 18 Nov 2013 08:01:33 -0500
>>
>> >
>>
>> > From: Fiona Darbyshire
>>
>> >
>>
>> > Subject: [SAC-HELP] Calculation of AZ and BAZ in SAC
>>
>> >
>>
>> > To: sac-help at iris.washington.edu
>>
>> >
>>
>> > Message-ID:
>>
>> >
>>
>> >
>>
>> >
>>
>> > Content-Type: text/plain; charset=ISO-8859-1
>>
>> >
>>
>> >
>>
>> >
>>
>> > Hello,
>>
>> >
>>
>> >
>>
>> >
>>
>> > Could someone tell me a bit more about how AZ and BAZ are calculated in SAC?
>>
>> >
>>
>> >
>>
>> >
>>
>> > Up to now, e.g. when binning receiver functions, I have used BAZ and
>>
>> >
>>
>> > GCARC to group them together, and that's always seemed to work, so
>>
>> >
>>
>> > I've always assumed that the BAZ/GCARC (or DIST, I imagine) pair gives
>>
>> >
>>
>> > you a unique position from the point of interest (the station).
>>
>> >
>>
>> >
>>
>> >
>>
>> > This time, I have some data output that is expressed in AZ and DIST. I
>>
>> >
>>
>> > assumed (perhaps naively?) that this would also allow successful
>>
>> >
>>
>> > spatial grouping, but it turns out not to be the case; one can have
>>
>> >
>>
>> > the same forward azimuth for several different locations.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Here's the example where I found the issue:
>>
>> >
>>
>> > Station lat, lon: 82.5033, -62.35 (ALE)
>>
>> >
>>
>> >
>>
>> >
>>
>> > Event1: lat 80.205, lon -1.091
>>
>> >
>>
>> > Event 2: lat 86.876, lon 54.373
>>
>> >
>>
>> > The two events are almost 1000km apart.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Event 1: AZ 313, BAZ 72, GCARC 9, DIST 1006
>>
>> >
>>
>> > Event 2: AZ 314, BAZ 17, GCARC 9, DIST 1042
>>
>> >
>>
>> >
>>
>> >
>>
>> > I'd like to know more about the calculation, in particular because (i)
>>
>> >
>>
>> > I'd like to reassure myself that BAZ/distance does indeed give a
>>
>> >
>>
>> > unique location, and (ii) I don't understand how AZ is calculated. One
>>
>> >
>>
>> > website I looked at (Matlab) talks about rhumb lines vs great-circles;
>>
>> >
>>
>> > is that the issue? Will an AZ/distance pair always be non-unique?
>>
>> >
>>
>> > (Also most websites define back-azimuth as simply 180 opposite to
>>
>> >
>>
>> > azimuth, but I guess they aren't talking about spherical geometry
>>
>> >
>>
>> > then...)
>>
>> >
>>
>> >
>>
>> >
>>
>> > Thanks for any insight.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Fiona Darbyshire.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Centre de recherche GEOTOP, Universit? du Qu?bec ? Montr?al
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > Message: 6
>>
>> >
>>
>> > Date: Mon, 18 Nov 2013 11:38:44 -0500
>>
>> >
>>
>> > From: Brian Savage
>>
>> >
>>
>> > Subject: Re: [SAC-HELP] Calculation of AZ and BAZ in SAC
>>
>> >
>>
>> > To: SAC HELP
>>
>> >
>>
>> > Message-ID: <8D3AE955-FCD5-48D4-8643-4E4E25115DEF at uri.edu>
>>
>> >
>>
>> > Content-Type: text/plain; charset="windows-1252"
>>
>> >
>>
>> >
>>
>> >
>>
>> > Fiona,
>>
>> >
>>
>> >
>>
>> >
>>
>> > The implementation of the computation of Great Circle Distance (degrees), Azimuth, Back Azimuth, and Distance (km) is based off of Rudoe's formula found in Geodesy by R.Bomford (1980). It assumes a Radius of 6378.160 km and a flattening of 1/298.2466081. I can send you the appropriate pages from R. Bomford (1980) if you would like.
>>
>> >
>>
>> >
>>
>> >
>>
>> > The azimuth and back-azimuth will generally not be offset by180 degrees, and some pairs of point will have "odd-looking" (not event close to 180 degrees) azimuth/back azimuth pairs.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Note: There are more robust methods of calculating these quantities and the current implementation in SAC as well as many other implementations, up until recently [1], have trouble with particular pairs of points. For over ~ 99% of point pairs SAC's implementation produces the correct result, but that last 1% can be incorrect (sometimes badly).
>>
>> >
>>
>> >
>>
>> >
>>
>> > I hope this helps.
>>
>> >
>>
>> >
>>
>> >
>>
>> > Brian Savage
>>
>> >
>>
>> >
>>
>> >
>>
>> > [1] Karney, C. F. F. (2013). "Algorithms for geodesics". Journal of Geodesy 87 (1): 43?42. arXiv:1109.4448. Bibcode:2013JGeod..87...43K. doi:10.1007/s00190-012-0578-z (open access). Addenda.
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > On Nov 18, 2013, at 8:01 AM, Fiona Darbyshire wrote:
>>
>> >
>>
>> >
>>
>> >
>>
>> > > Hello,
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Could someone tell me a bit more about how AZ and BAZ are calculated in SAC?
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Up to now, e.g. when binning receiver functions, I have used BAZ and
>>
>> >
>>
>> > > GCARC to group them together, and that's always seemed to work, so
>>
>> >
>>
>> > > I've always assumed that the BAZ/GCARC (or DIST, I imagine) pair gives
>>
>> >
>>
>> > > you a unique position from the point of interest (the station).
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > This time, I have some data output that is expressed in AZ and DIST. I
>>
>> >
>>
>> > > assumed (perhaps naively?) that this would also allow successful
>>
>> >
>>
>> > > spatial grouping, but it turns out not to be the case; one can have
>>
>> >
>>
>> > > the same forward azimuth for several different locations.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Here's the example where I found the issue:
>>
>> >
>>
>> > > Station lat, lon: 82.5033, -62.35 (ALE)
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Event1: lat 80.205, lon -1.091
>>
>> >
>>
>> > > Event 2: lat 86.876, lon 54.373
>>
>> >
>>
>> > > The two events are almost 1000km apart.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Event 1: AZ 313, BAZ 72, GCARC 9, DIST 1006
>>
>> >
>>
>> > > Event 2: AZ 314, BAZ 17, GCARC 9, DIST 1042
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > I'd like to know more about the calculation, in particular because (i)
>>
>> >
>>
>> > > I'd like to reassure myself that BAZ/distance does indeed give a
>>
>> >
>>
>> > > unique location, and (ii) I don't understand how AZ is calculated. One
>>
>> >
>>
>> > > website I looked at (Matlab) talks about rhumb lines vs great-circles;
>>
>> >
>>
>> > > is that the issue? Will an AZ/distance pair always be non-unique?
>>
>> >
>>
>> > > (Also most websites define back-azimuth as simply 180 opposite to
>>
>> >
>>
>> > > azimuth, but I guess they aren't talking about spherical geometry
>>
>> >
>>
>> > > then...)
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Thanks for any insight.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Fiona Darbyshire.
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > Centre de recherche GEOTOP, Universit? du Qu?bec ? Montr?al
>>
>> >
>>
>> > >
>>
>> >
>>
>> > > _______________________________________________
>>
>> >
>>
>> > > sac-help mailing list
>>
>> >
>>
>> > > sac-help at iris.washington.edu
>>
>> >
>>
>> > > http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>> >
>>
>> >
>>
>> >
>>
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>>
>> >
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>>
>> >
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>> >
>>
>> > ------------------------------
>>
>> >
>>
>> >
>>
>> >
>>
>> > _______________________________________________
>>
>> >
>>
>> > sac-help mailing list
>>
>> >
>>
>> > sac-help at iris.washington.edu
>>
>> >
>>
>> > http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> >
>>
>> > End of sac-help Digest, Vol 97, Issue 2
>>
>> >
>>
>> > ***************************************
>>
>> >
>>
>> >
>>
>> >
>>
>> > Get your own FREE website, FREE domain & FREE mobile app with Company email.
>>
>> > Know More >
>>
>> > <2009-11-14-1304-50S.KGD___003_KGD___HH_Z_SAC>_______________________________________________
>>
>>
>> > sac-help mailing list
>>
>> > sac-help at iris.washington.edu
>>
>> > http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>>
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>>
>>
>> _______________________________________________
>>
>> sac-help mailing list
>>
>> sac-help at iris.washington.edu
>>
>> http://www.iris.washington.edu/mailman/listinfo/sac-help
>>
>>
>>
>>
>>
>> End of sac-help Digest, Vol 97, Issue 7
>>
>> ***************************************
>>
>>
>>
>> Get your own FREE website, FREE domain & FREE mobile app with Company email.
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>> _______________________________________________
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>
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