[meteorite-list] Tunguska rates

From: E.P. Grondine <epgrondine_at_meteoritecentral.com>
Date: Sat, 14 Nov 2009 18:20:11 -0800 (PST)
Message-ID: <666459.24129.qm_at_web36906.mail.mud.yahoo.com>

Hi Arnauld, all,

The problem is that Tunguska type blasts have been occuring recently (for the last 5,000 years) at a rate of 1 per 100 years, not 1 per 1,000. Whether this represents a short term phenonmenon or the long term rate is not currently known.

I used to put together catalogues of "known and suspected impacts", you may want to google that, and if you have not bought a copy of "Man and Impact in the Americas" yet, well, it is the best available recent impact rate data for the Americas.

E.P. Grondine
Man and Impact in the Americas


      
Received on Sat 14 Nov 2009 09:20:11 PM PST