[meteorite-list] A Heads-Up: Another important article on Carancas in MAPS 44-12, 2009
From: tett <tett_at_meteoritecentral.com>
Date: Wed, 24 Mar 2010 18:13:27 -0400 Message-ID: <4BAA8E87.2060300_at_rogers.com> Bernd, It is GOOD to have you back on the list! Mike bernd.pauli at paulinet.de wrote: > TANCREDI G. et al. (2009) A meteorite crater on Earth formed > on September 15, 2007: The Carancas hypervelocity impact > (MAPS 44-12, 2009, pp. 1967-1984). > > Some of the key results the authors present: > > - initial mass 7-12 metric tons > - initial diameter 1.6-2 meters > - initial velocity 12-17 km/s > - initial kinetic energy 0.12-0.41 kT TNT > - trajectory roughly east-west > - height above the horizon 45-60? > - orbit of known near-Earth asteroids > - impact time 16:40:14.4 UT > - crater dimensions: 13.5 m (rim to rim) > - depth to diameter ratio ca. 0.2 (typical of impact craters) > - meteorites collected inside and outside the crater > - classification H4-5 > - peak pressures at impact over several GPa > - impact velocity on the ground > ca. 3 km/s but < 6 km/s > - hypervelocity impact event (impact speed larger than the > speed of sound in the target material) > - significant ablation but no catastrophic disruption during > atmospheric passage > - mass on impact 0.3-3 tons / diameter 0.6-1.1 m > > Best wishes, > > Bernd > > ______________________________________________ > Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > > Received on Wed 24 Mar 2010 06:13:27 PM PDT |
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