I've seen several reports of this meteor explosion, below are two.
Was there infrasound recordings of the pressure wave, or were weak, local seismic signals recorded, or it this just a ballpark estimate based on circumstantial evidence?
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$\begingroup$ related (and unanswered) in Earth Science SE: Was the “'Bama Boom” even recorded by infrasound or by seismic detectors? $\endgroup$– uhohMar 12, 2021 at 14:38
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1 Answer
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According to NASA Meteor Watch Facebook page, they:
obtained infrasound measurements from 3 nearby stations - the amplitudes and durations of the signals put the energy of the fireball fragmentation at 440 pounds (200 kilograms) of TNT.
Here is an image of the infrasound:
From this news story,
A man in Canton, Maine said there was a delay of several minutes from the time he saw the fireball until heard a loud boom. He said it shook his home unlike anything he experienced before.
It all makes me wonder How loud was the asteroid that killed the dinosaurs?
Further reading on infrasound detectors monitoring space:
- What is used to monitor objects burning up in the atmosphere on descent?
- this answer to What local pressure changes would a starship launch on Mars cause?
and others:
answered Mar 12, 2021 at 15:33
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1$\begingroup$ Thanks for tracking this down! I hope you don't mind I added some additional links, the one about Mars includes an image of an infrasound detector; they're funny looking things. $\endgroup$– uhohMar 12, 2021 at 23:23
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2$\begingroup$ Thanks for the links. It looks like I have some reading to do now! $\endgroup$– Connor Garcia ♦Mar 12, 2021 at 23:32