Re: [MSNoise] MSNoise Digest, Vol 31, Issue 13 - MSNoise - KSB-ORB Mailing Lists

21 Oct 2016

Hi Asthon, 

So far, I think we can compute the CC with a minimum of 3 stations (Am I right Thomas?).
What I did for Costa Rica was computing seismic velocity variations for selected station
pairs instead of the average seismic velocity change for the whole N array. You can adapt
the scripts for this...

It would be really cool if we can implement sub-arrays from the N stations and monitoring 
these sub-arrays and compare results.  

Changing gears a bit: 
** Another cool idea that I am throwing here is to implement a tool/ function that allow
us to use the final Green’s functions as virtual earthquakes!! So we can perform moment
tensor inversions (for instance) and make some seismic hazard analysis.  

Cheers; 

-Esteban

...
  On Oct 21, 2016, at 5:00 AM,
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 Today's Topics:

   1. selective pairs (Flinders, Ashton)

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 Message: 1
 Date: Thu, 20 Oct 2016 08:47:50 -0700
 From: "Flinders, Ashton" &lt;aflinders(a)usgs.gov&gt;
 To: "Python Package for Monitoring Seismic Velocity Changes using
 	Ambient	Seismic Noise" &lt;msnoise(a)mailman-as.oma.be&gt;
 Subject: [MSNoise] selective pairs
 Message-ID:
 	&lt;CAPbWHEMzu7y40649A5TesRz9i80yjn9t6KRwnAzRhUzAAP04JA(a)mail.gmail.com&gt;
 Content-Type: text/plain; charset="UTF-8"

 Hi all,

 I was wondering if anyone had already implemented something like this. I'd
 like to be able to select which CC pairs I calculated, instead of all
 combinations. My reasoning is, I want to use this for monitoring changes
 associated with a potential magma reservoir, and only want to look at ray
 paths that cross the caldera.

 Thanks!
 -ashton

 -- 
 Ashton F. Flinders, Ph.D
 U.S. Geological Survey
 345 Middlefield Road
 Menlo Park, CA 94025
 (650) 329-5050

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