Paola Antonietti's Mathematical Colloquium at SISSA

[Antonio Lerario]

Dear everyone,

this is to announce next SISSA mathematical colloquium:

Speaker: Paola Antonietti (Polimi)
Title: Numerical modeling of earthquake ground motion
When: Monday, November 18 at 2pm
Where: SISSA main building, room A-005

Everyone is much welcome (and encouraged!) to attend.
The abstract follows.

Best,
Antonio

Paola Antonietti: "Numerical modeling of earthquake ground motion"

Abstract: Challenging geophysical applications require a flexible
representation of the geometry and an accurate approximation of the
solution field. Paradigmatic examples include seismic wave propagation
phenomena and fractured reservoir simulations. The main challenges are i)
the complexity of the physical domain, due to the presence of localized
geological irregularities, alluvial basins, faults and fractures; ii) the
heterogeneities in the medium, with significant and sharp contrasts; and
iii) the coexistence of different physical models. The high-order
discontinuous Galerkin (DG) Finite Element Method 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. At the same time DG methods feature a high-level of
intrinsic parallelism, making them well suited for large-scale computations
on massively parallel architectures. In this talk, I will discuss recent
advances in the development and analysis of high-order DG methods for the
numerical approximation of seismic wave propagation phenomena. I will
analyse the stability and the theoretical properties of the scheme and
present some simulations of the earthquake ground motion induced by real
large-scale seismic events. Further applications to flow in fractured
porous media and fluid-structure interaction problems will also be briefly
discussed.

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*http://people.sissa.it/~lerario <http://people.sissa.it/~lerario>*