[Rockhounds] Rock and Roll!!!

[Axel Emmermann]

> 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