[meteorite-list] Boom 28 secs after Russian meteor passes overhead - oops 98 secs!

[Robin Whittle]

A list member kindly pointed out that there was more than a few seconds
deleted from this video.  I didn't look at the minutes figure.

The meteor is overhead at 43:06 and the shockwave arrives at 44.34.

So this puts the altitude about three times the 8.7km estimated by Bob
Matson.  From:


http://en.wikipedia.org/wiki/Speed_of_sound#Altitude_variation_and_implications_for_atmospheric_acoustics

  http://en.wikipedia.org
/wiki/File:Comparison_US_standard_atmosphere_1962.svg

the speed of sound varies somewhat.  Since this is a large positive
pressure wave, maybe it would travel somewhat faster than a small
pressure wave at these higher altitudes.  Sticking with the 310
metre/sec guesstimate of Bob Matson, 98 seconds gives us 30.4 km.

  - Robin