[Rockhounds] Infrasound / Rock and Roll!!!

[Axel Emmermann]

There's a rather informative web page that describes the effects of
infrasound on humans.
http://www.lowertheboom.org/trice/infrasound.htm
Lower the boom? ;-)))

Axel 

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com 
> [mailto:rockhounds-bounces at lists.drizzle.com] Namens Erich Kern
> Verzonden: zondag 20 april 2008 8:33
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem 
> collectors
> Onderwerp: Re: [Rockhounds] Infrasound / Rock and Roll!!!
> 
> 
> I believe Axel is correct. Infrasound is generally below 10 
> Hz down to 0.1 Hz, and I've seen some experimental detectors. 
> These are useful to detect earthquake precursors, large 
> meteors entering the atmosphere and nuclear tests as part of 
> the test ban treaty verification process.
> 
> Here's a bit of info on the projects. 
> http://www.esrl.noaa.gov/psd/programs/infrasound/
> 
> The U. of Hawaii has an infrasound lab. Link is:
> http://www.isla.hawaii.edu/
> 
> Cheers,
> Erich
> 
> 
> 
> ----- Original Message -----
> From: Axel Emmermann
> To: 'Rockhounds at drizzle.com: A mailing list for rock and gem 
> collectors' 
> Sent: Saturday, April 19, 2008 12:28 PM
> Subject: RE: [Rockhounds] Rock and Roll!!!
> 
> 
> > I've read that scientists insist that animals cannot 
> possibly be more 
> > sensitive to an impending earthquake than the delicate instruments 
> > designed to detect quakes.  But there continue to be 
> reports of that 
> > happening.  There are no such reports here in Hawaii, 
> perhaps because 
> > our quakes are mostly caused by lava readjustment rather than large 
> > plate movement.
> >  I wonder if that movement might cause an extremely 
> high-pitched sound 
> > that animals can hear rather than feel.
> > However, I'm not a scientist!
> 
> Hi Kitty,
> 
> If I'm not mistaking, it's just opposite: an extremely 
> low-pitched sound or infra-sound.
> I just saw a documentary on National Geographic High 
> Definition Channel that demonstrated that quite some animals 
> can feel the infra-sound and react to it. It's just a few 
> hertz, apparently.
> 
> Cheers from Belgium
> 
> Axel
> 
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