Meteor Crater: Energy of formation - Implications of centrifuge scaling

Meteor Crater: Energy of formation - Implications of centrifuge scaling. Schmidt, R. M. In volume 11, pages 2099–2128, 1980.

Paper abstract bibtex

Recent work on explosive cratering has demonstrated the utility of performing subscale experiments on a geotechnic centrifuge to develop scaling rules for very large energy events. The present investigation is concerned with an extension of this technique to impact cratering. Experiments have been performed using a projectile gun mounted directly on the centrifuge rotor to launch projectiles into a suitable soil container undergoing centripetal accelerations in excess of 500 G. The pump tube of a two-stage light-gas gun was used to attain impact velocities of approximately 2 km/sec. The results of the experiments indicate that the energy of formation of any large impact crater depends upon the impact velocity. This dependence, shown for the case of Meteor Crater, is consistent with analogous results for the specific energy dependence of explosives and is expected to persist to impact velocities in excess of 25 km/sec.

@inproceedings{schmidt_meteor_1980,
	title = {Meteor {Crater}: {Energy} of formation - {Implications} of centrifuge scaling},
	volume = {11},
	shorttitle = {Meteor {Crater}},
	url = {http://adsabs.harvard.edu/abs/1980LPSC...11.2099S},
	abstract = {Recent work on explosive cratering has demonstrated the utility of performing subscale experiments on a geotechnic centrifuge to develop scaling rules for very large energy events. The present investigation is concerned with an extension of this technique to impact cratering. Experiments have been performed using a projectile gun mounted directly on the centrifuge rotor to launch projectiles into a suitable soil container undergoing centripetal accelerations in excess of 500 G. The pump tube of a two-stage light-gas gun was used to attain impact velocities of approximately 2 km/sec. The results of the experiments indicate that the energy of formation of any large impact crater depends upon the impact velocity. This dependence, shown for the case of Meteor Crater, is consistent with analogous results for the specific energy dependence of explosives and is expected to persist to impact velocities in excess of 25 km/sec.},
	urldate = {2018-08-03TZ},
	author = {Schmidt, R. M.},
	year = {1980},
	keywords = {ACCELERATED FRAME TESTING, ANGLE OF INTERNAL FRICTION, ARIZONA, CENTRIFUGE, CRATER SCALING LAWS, CRATERING, Centrifuges, Energy Of Formation, GRAVITY, GRAVITY-SCALED SIZE, Geomorphology, IMPACT CRATER, Impact Tests, METEOR CRATER, Meteorite Craters, OTTOWA SAND, Projectile Cratering, Prototypes, Scaling Laws, Stratigraphy},
	pages = {2099--2128}
}

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