(meteorobs) Anyone doing infrasound monitoring?

[dfischer at astro.uni-bonn.de]

> Does anyone do infrasound meteor monitoring?   Can a research-grade
> infrasound system be manifested for little money?

Yes. And kind-of. A privately run infrasound (or rather: microbarometric)
recording system has been presented at several recent annual meetings of
the German Meteor Working Group (AK Meteore). Since this is such a new
field - for amateurs, not nuclear proliferation fighters, of course :-) -
the operator is still learning how to identify various effects but
believes he already detected the pressure wave from a major fireball over
the Baltic Sea in Jan. 2009 by clever bandpass filtering. See
http://twitpic.com/2kvek and http://twitpic.com/2kvlz and
http://twitpic.com/2kvil for impressions from the 2009 meeting; this year
he showed newer results. The Chelyabinsk airburst, 3000 km away, was not
detected clearly, by the way.

Daniel