There are recoveries following instrumentally recorded fireballs. Initial
mass is estimated in different ways, depending on the data available. This
includes seismic and infrasound data as well as intensity profiles, either
from cameras or spacecraft.
There are several papers which rigorously describe the ablation process on
theoretical grounds, and these are also consistent with a 95%+ mass loss.
Chris
*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
----- Original Message -----
From: "Meteorites USA" <[email protected]>
To: "Chris Peterson" <[email protected]>
Cc: "meteorite list" <[email protected]>
Sent: Thursday, December 03, 2009 9:21 PM
Subject: Re: [meteorite-list] How much survives entry?
Hi list,
How is this calculated and how do we know the 90% to 95% loss calculation
is accurate without knowing the mass of the asteroid before entry and
after recovery of every piece that lands on the surface of our planet?
Has there ever been such a case?
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