[meteorite-list] Seismic Event w/ Bolide?

From: Chris Peterson <clp_at_meteoritecentral.com>
Date: Wed, 17 Jan 2018 09:03:48 -0700
Message-ID: <774575e7-c94a-a55f-834a-def670f3346c_at_alumni.caltech.edu>

It's not uncommon for large fireballs to produce seismic signatures.
They're created by atmospheric shock waves hitting the ground. The
bodies themselves are nowhere near large enough to reach the ground
intact, so all that kinetic energy never results in cratering. ("Never"
as in "only every few hundred or thousand years".)

Chris

*******************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 1/17/2018 7:22 AM, Greg Redfern via Meteorite-list wrote:
> List,
>
> Has there been other bolide events that have had a seismic correlation? It
> is being reported that USGS recorded a 2.0 magnitude seismic event with
> this morning's Michigan et al bolide event.
>
> I would think that would have to equate to enough kinetic energy upon
> impact of the main body to create a crater of some size.
>
> Thoughts from experts like Mr. Matson ;-)
>
> Thanks.
>
> Sky Guy Greg
Received on Wed 17 Jan 2018 11:03:48 AM PST