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Re: (meteorobs) Excerpts from "CCNet DIGEST, 15 June 1999"



> This is at least the second time I've read this message. I meant to comment 
> about it the first time from wherever I saw it previously. But the figure of 
> 2200 square kilometers of damage seems quite high to me. I just looked up in 
> Richard Nortons book "Rocks from Space" that showed an approximate dimension 
> of damage from the tunguska event to be in the neighborhood of about 20X25 
> miles. In Square miles this would be about 500. My conversion into kilometers 
> is rocky, but I would think it would be at least less than 1000? 

My calculation gives 500 sq miles is equivlaent to 1280 km^2.  2200 km^2
is the equivalent circle of radius 16.5 miles.  Not a big difference
from the numbers you recall George.  Welcome back by the way.

Malcolm

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