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BEGIN:VEVENT
DTSTAMP:20260815T150643Z
LAST-MODIFIED:20121119T143752Z
DTSTART:20121211T203000Z
DTEND:20121211T213000Z
UID:event979@bu.edu
URL:http://physics.bu.edu/internal/events/show/979
SUMMARY:Unifying Theory for Universal Quake Statistics: from Compressed Nan
	opillars to Earthquakes
DESCRIPTION:Featuring Karin Dahmen\, University of Illinois\, Urbana-Champa
	ign\nHosted by: David Campbell\, William Klein\nPoster: http://physics.bu.e
	du/posters/2012_Fall/09_Dahmen.pdf\n\nPart of the Physics Department Colloq
	uia Series.\n\nThe deformation of many solid and granular materials is not 
	continuous\, but discrete\, with intermittent slips similar to earthquakes.
	 Here\, we suggest that the statistical distributions of the slips\, such a
	s the slip-size distributions\, all follow approximately the same regular (
	powerlaw) functions\, with the same cutoffs\, for systems spanning 13 decad
	es in length\, from tens of nanometers to hundreds of kilometers; for compr
	essed nano-crystals\, amorphous materials\, sheared granular materials\, la
	b-sized rocks\, and earthquakes. The similarities are explained by asimple 
	analytic model\, which suggests that results are transferable across scales
	. This study provides a unified understanding of fundamental properties of 
	shear-induced deformation in systems ranging from nanocrystals to earthquak
	es. It also provides many new predictions for future experiments and simula
	tions. The studies draw on methods from the theory of phase transitions\, t
	he renormalization group\, and numerical simulations. Connections to other 
	systems with avalanches\, such as magnets and neuron firing avalanches in t
	he brain are also discussed.
LOCATION:SCI 109\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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