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BEGIN:VEVENT
DTSTAMP:20261026T175907Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20110714T180000Z
DTEND:20110714T190000Z
UID:event820@bu.edu
URL:http://physics.bu.edu/internal/events/show/820
SUMMARY:Christopher Serino - Departmental Seminar
DESCRIPTION:\nPart of the Departmental Seminars.\n\nTitle:  What can w
	e Learn from Observed Variations in the Gutenberg–Richter Law b-value
	\n\n Dissertation Committee: William Klein\, Karl Ludwig\, Sid Redner\, Lee
	 Roberts\, Paul Hall (Earth Sciences)\n\n Abstract: \n\n The Gutenberg
	-Richter distribution\, which characterizes the frequency-magnitude statist
	ics collected over earthquake fault systems\, has lead seismologists as wel
	l as physicists and geophysicists to propose various simple models to expla
	in this empirical scaling relation. To date\, these models have been limite
	d to the description of a single fault. We discuss a model of an earthquake
	 fault sys- tem made up of non-interacting faults that are represented as d
	amaged\, Olami-Feder-Christensen models. The frequency-magnitude statistics
	 do not\, in general\, scale on a single fault with some realization of dam
	age; however\, these statistics follow a simple distribution that can also 
	be used to describe the data collected from actual earthquake faults. What 
	is more\, by varying the amount of damage on each fault in the system\, as 
	well as the relative frequency with which a fault with a given amount of da
	mage occurs within the system\, we obtain a one-parameter family of models\
	, all of which produce Gutenberg-Richter-like statistics. This parameter is
	 a measure of the stress dissipation within the fault system\, a quantity k
	nown to vary with various geological properties\, and offers an explanation
	 for the range of b-values observed by seismologists.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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