[sheeny (Al)]

Attached are my calculations for an Infrasound detection of a meteors yesterday with my Raspberry Shake and Boom.


Pity there aren't more Raspberry Booms close by to calculate trajectories...


The one at 04:07:46UTC is a medium speed class I + meteor. The + indicates a positive phase i.e. the first part of the wave is a positive pressure spike. My interpretation of this (I haven't yet found a reference that describes this) is that the meteor is generally approaching the observer so the positive pressure wave arrives first.


The one at 15:37:41UTC is a fast class I- meteor. In this case the phase is negative so I interpret this as it traveling away from the observer so the negative pressure wave arrives first.


Al.