(meteorobs) Meteor triangulation from sonics

[Roberto Gorelli]

On Thu, 9 Feb 2012 11:59:21 -0800
  Jake S <jakeschaeferml at gmail.com> wrote:
>For the Texas fireball there was not enough seismographs to build a
> trajectory. My goal was to produce a data set to help verify the
> trajectories given from the all sky cameras (which it verifys Bill
> Cooke's trajectory very well). There was 1 seismograph that was 
>about
> 55 miles from the trajectory which saw a clear hit, a second one is
> about 150 km away and saw a small spike in noise but I believe this 
>to
> not be the direct air pressure wave passing over.

I worked on Lugo bolid of 19 January 1993 (northern Italy) and I saw 
that the best should be to have microbarograph records, and too that 
sismographs work sometime as microbarographs, in my case it was 4 
sismographs, some other instruments for record underground waves and 
other sismograph more distant for a total of 11-12 instruments. Too 
with sismographs distant more of 100 km you should triangulate, but 
remember that you shall have only the point where the meteorite lost 
its cosmic speed, only in case on massif crach (more of 1 tn) you can 
record the impact of meteorites.
Best greetings.
Roberto Gorelli