[MSNoise] MSNoise Digest, Vol 31, Issue 5

Esteban Chaves echfisica at gmail.com
Fri Oct 7 17:23:07 UTC 2016


Thanks Thomas! 

We will! 

-Esteban 


> On Oct 7, 2016, at 5:00 AM, msnoise-request at mailman-as.oma.be wrote:
> 
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> Today's Topics:
> 
>   1. Re: MSNoise Digest, Vol 31, Issue 1 (VICIC BLAZ [PHD0900016])
>   2. Re: MSNoise Digest, Vol 31, Issue 1 (Thomas Lecocq)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 7 Oct 2016 05:49:18 +0000
> From: "VICIC BLAZ [PHD0900016]" <BLAZ.VICIC at phd.units.it>
> To: "Python Package for Monitoring Seismic Velocity Changes using
> 	AmbientSeismic Noise" <msnoise at mailman-as.oma.be>
> Subject: Re: [MSNoise] MSNoise Digest, Vol 31, Issue 1
> Message-ID:
> 	<VI1PR04MB1389D35A8164302922C86CB9A3C60 at VI1PR04MB1389.eurprd04.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="Windows-1252"
> 
> Thank you on clarification of responses!
> 
> 
> Bla?
> 
> ________________________________
> From: msnoise-bounces at mailman-as.oma.be <msnoise-bounces at mailman-as.oma.be> on behalf of Flinders, Ashton <aflinders at usgs.gov>
> Sent: Friday, October 7, 2016 1:16:46 AM
> To: Python Package for Monitoring Seismic Velocity Changes using AmbientSeismic Noise
> Subject: Re: [MSNoise] MSNoise Digest, Vol 31, Issue 1
> 
> Thanks for all the info Thomas! I'm coming from an AN tomography
> background, so things are a little different to me, e.g. I tend to
> preprocess, whiten and do the CC over a broad band, and then do different
> narrow-band filtering on the final stacked CC to get my frequency-band
> dependent dt's.
> 
> I look forward to actively contributing, so I'll be sure to push any
> problems I encounter to the github thread too.
> 
> On a sidenote, is the python3 version stable, or still a work in progress?
> 
> thanks again!
> 
> ashton
> 
> On Thu, Oct 6, 2016 at 1:30 PM, Thomas Lecocq <Thomas.Lecocq at seismology.be>
> wrote:
> 
>> Dear All,
>> 
>> small note here:
>> 
>> pleaaaase, if something is not clear in the Documentation and you think
>> that, after asking your questions and getting answers from the mailing
>> list, you have suggestions to be more accurate, precise or else, don't
>> hesitate to suggest changes (via github issues, pull requests or even
>> email), it'll be beneficial to all users!
>> 
>> I'm the worst person to write doc about MSNoise, because I know it too
>> well.
>> 
>> Cheers
>> 
>> Thomas
>> 
>> 
>> 
>> On 06/10/2016 19:17, Esteban Chaves wrote:
>> 
>>> Hi Ashton,
>>> 
>>> As an active user:
>>> 
>>> I highly recommend you to check the documentation:
>>> http://msnoise.org/doc/workflow.html#module-msnoise.s03compute_cc <
>>> http://msnoise.org/doc/workflow.html#module-msnoise.s03compute_cc>
>>> I think the pre-processing and processing steps are well documented in
>>> the web site.
>>> 
>>> 1) Yes. It is more efficient to compute the cross-correlation functions
>>> or Green?s functions using 30-min chunks. Although you can change this
>>> feature if you will. Segments are re-build afterwards.
>>> 
>>> 2) You need to define the filters in order to compute the
>>> cross-correlations and extract the coherent part of the ambient noise for a
>>> given frequency range. MWCS is used to compute the moving window cross
>>> spectral analysis after the cross-correlation procedure.
>>> 
>>> 3) dunno. May be Thomas can give you more info.
>>> 
>>> -Esteban J. Chaves
>>> 
>>> 
>>> On Oct 6, 2016, at 5:00 AM, msnoise-request at mailman-as.oma.be wrote:
>>>> 
>>>> Send MSNoise mailing list submissions to
>>>>        msnoise at mailman-as.oma.be
>>>> 
>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>        http://mailman-as.oma.be/mailman/listinfo/msnoise
>>>> or, via email, send a message with subject or body 'help' to
>>>>        msnoise-request at mailman-as.oma.be
>>>> 
>>>> You can reach the person managing the list at
>>>>        msnoise-owner at mailman-as.oma.be
>>>> 
>>>> When replying, please edit your Subject line so it is more specific
>>>> than "Re: Contents of MSNoise digest..."
>>>> 
>>>> 
>>>> Today's Topics:
>>>> 
>>>>   1. new user (Flinders, Ashton)
>>>> 
>>>> 
>>>> ----------------------------------------------------------------------
>>>> 
>>>> Message: 1
>>>> Date: Wed, 5 Oct 2016 13:10:53 -0700
>>>> From: "Flinders, Ashton" <aflinders at usgs.gov>
>>>> To: <msnoise at mailman-as.oma.be>
>>>> Subject: [MSNoise] new user
>>>> Message-ID:
>>>>        <CAPbWHEO7J_9dyMdKJ3SQkpGy9hG7N1M-COwgzGTpkVmy85ig5g at mail.
>>>> gmail.com>
>>>> Content-Type: text/plain; charset="UTF-8"
>>>> 
>>>> Hi all, long-time obspy user new MSnoise user.
>>>> 
>>>> I just had a couple quick questions I was hoping to get clarification on;
>>>> 
>>>> From the SRL article;
>>>>> 
>>>> "Once all waveforms are loaded in memory, the computation is done by
>>>> iteration of the station pairs, on the different components to compute
>>>> and
>>>> the on the different filters for each defined window (30 minutes slices
>>>> by
>>>> default)."
>>>> 
>>>> 1) To be clear, the two time-series from a station-station pair are
>>>> divided
>>>> into segments (30 minutes long, no overlap, by default), and the CC is
>>>> done
>>>> on these segments? Are these segments then rebuilt into the daily CCF? Is
>>>> this segmentation purely for efficieny reasons, or is there something
>>>> else
>>>> going on?
>>>> 
>>>> 2) Why does msnoise compute_cc, not work if there is no MCWS filter
>>>> defined?
>>>> 
>>>> 3) Is there an intelligent way to search the mailing list archive?
>>>> 
>>>> Thanks for the help!
>>>> 
>>>> -ashton
>>>> 
>>>> 
>>>> ------------------------------
>>>> 
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>>>> 
>>>> End of MSNoise Digest, Vol 31, Issue 1
>>>> **************************************
>>>> 
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>> 
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> 
> 
> 
> --
> Ashton F. Flinders, Ph.D
> U.S. Geological Survey
> 345 Middlefield Road
> Menlo Park, CA 94025
> (650) 329-5050
> _______________________________________________
> MSNoise mailing list
> MSNoise at mailman-as.oma.be
> http://mailman-as.oma.be/mailman/listinfo/msnoise
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> 
> ------------------------------
> 
> Message: 2
> Date: Fri, 7 Oct 2016 10:28:48 +0200
> From: Thomas Lecocq <thomas.lecocq at oma.be>
> To: msnoise at mailman-as.oma.be
> Subject: Re: [MSNoise] MSNoise Digest, Vol 31, Issue 1
> Message-ID: <570e92d8-4cee-bdbf-1184-173420e947e2 at oma.be>
> Content-Type: text/plain; charset=utf-8; format=flowed
> 
> Hi Ashton,
> 
> For you to know, we are "about" to release MSNoise-TOMO "soon"...
> 
> The python3 version is as stable as the python2 one, both are tested 
> continuously on independent CI services (Travis for Linux & Appveyor for 
> Windows).
> 
> Note that this holds "as long as" I don't need py3 specific things in 
> the code base, because if this happens, I'll drop py2 support. 
> Aaaaanyway, py2 end of life is 2020.
> 
> Cheers,
> 
> Thomas
> 
> 
> Le 07/10/2016 ? 01:16, Flinders, Ashton a ?crit :
>> Thanks for all the info Thomas! I'm coming from an AN tomography
>> background, so things are a little different to me, e.g. I tend to
>> preprocess, whiten and do the CC over a broad band, and then do different
>> narrow-band filtering on the final stacked CC to get my frequency-band
>> dependent dt's.
>> 
>> I look forward to actively contributing, so I'll be sure to push any
>> problems I encounter to the github thread too.
>> 
>> On a sidenote, is the python3 version stable, or still a work in progress?
>> 
>> thanks again!
>> 
>> ashton
>> 
>> On Thu, Oct 6, 2016 at 1:30 PM, Thomas Lecocq <Thomas.Lecocq at seismology.be>
>> wrote:
>> 
> 
> 
> 
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> 
> End of MSNoise Digest, Vol 31, Issue 5
> **************************************



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