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SUMMARY:High-order Discontinuous Galerkin methods for the numerical modell
 ing of earthquake ground motion - Paola Francesca Antonietti (Politecnico 
 di Milano)
DTSTART:20190708T153000Z
DTEND:20190708T163000Z
UID:TALK126982@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:A number of challenging geophysical applications requires a fl
 exible representation of the geometry and an accurate approximation of the
  solution field. Paradigmatic examples include seismic wave propagation an
 d fractured reservoir simulations. The main challenges are i) the complexi
 ty of the physical domain\, due to the presence of localized geological ir
 regularities\, alluvial basins\, faults and fractures\; ii) the heterogene
 ities in the medium\, with significant and sharp contrasts\; and iii) the 
 coexistence of different physical models. The high-order discontinuous Gal
 erkin FEM possesses the built-in flexibility to naturally accommodate both
  non-matching meshes\, possibly made of polygonal and polyhedral elements\
 , and high-order approximations in any space dimension. In this talk I wil
 l discuss recent advances in the development and analysis of high-order DG
  methods for the numerical approximation of seismic wave propagation pheno
 mena. I will analyse the stability and the theoretical properties of the s
 cheme and present some simulations of real large-scale seismic events in t
 hree-dimensional complex media.
LOCATION:Seminar Room 1\, Newton Institute
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