Bernd, It is GOOD to have you back on the list!
Mike bernd.pa...@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
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