[SIO GP Seminars] Geophysics Seminar: Magali Billen, UC Davis

[Daniel Brothers]

Join us for the Geophysics seminar this Friday:

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Friday, February 3, 3:00 PM
(Refreshments served at 2:45 PM)
Munk Conference Room

Magali Billen
University of California, Davis
"Subduction Dynamics: A historical perspective on where modeling is  
headed"

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Abstract:
Our understanding of subduction dynamics has its roots in earlier  
innovative analytical and laboratory models. These early methods  
focused on determining first order interactions between the driving  
forces of subduction (density anomalies) and dissipative processes  
(e.g., viscous, shear heating, bending) that resist subduction and  
deform the slab as it sinks into the mantle. Today numerical models  
play a special role by facilitating hypothesis testing that includes  
such phenomena as multiple phase transitions, non-newtonian  
viscosity, effects of grain size, water and melt.  My talk will  
attempt to provide a historical context for the scientific questions  
and observations driving today's models of subduction dynamics, and  
to illustrate one way in which multiple observations can be used to  
constrain how mantle rheology affects subduction dynamics.

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