Here is another link for you collection. Dr. Bedard has been persuing 
several aspects of infrasound.
http://www.etl.noaa.gov/et1/infrasound/infrasonic.html This paper will give 
you some ideas of the frequencies involved for several infrasonic signals.

I have found the Hayward site at SMU to be the best for building and 
testing a detector.

I have also been slowly building a detector. based on the Validyne sensor. 
http://www.validyne.com/ I will be using soaker hoses for a spatial 
filter.  My main interest however is for tornado detection rather than quakes.

During my web browsing I read that you could download data from some of the 
infrasonic arrays via AutoDRM. So far I have been unable to do this. Has 
anyone else tried?

Jim Hannon


At 08:30 AM 8/25/02 -0800, you wrote:
>Arie, here's some links I've collected on infrasound equipment and use.  I 
>used to work with some of the people described in these
>links.  I've been thinking of building one.
>
>http://geology.about.com/library/weekly/aa121497.htm
>http://www.polar.org/antsun/oldissues2000-2001/2001_0204/ctbto.html
>http://www.nemre.nn.doe.gov/nemre/introduction/infrasound_fact_sheet.html
>http://www.nemre.nn.doe.gov/nemre/introduction/infrasound_mon2.html
>http://www.pidc.org/rdss/resources/INFRA/doc/2_Stations.htm
>http://geology.heroy.smu.edu/~hayward/Projects/Infrasonics/assets/sow.html
>http://www.seismo.berkeley.edu/seismo/annual_report/ar99_00/node11.html#SECTION03740000000000000000
>
>and of course http://www.belljar.net/microbar.htm
>
>regards,
>
>Bob Hammond
>Alaska Public Seismic Network
>http://apsn.awcable.com

Jim Hannon
http://www.fmtcs.com/web/jmhannon
42,11.90N,91,39.26W
WB0TXL

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