PhD and post-doc opportunities

Post-doc: Advanced Fast BEM solver to model long period seismic waves on realistic configurations (funded by ANR MODULATE)

Topic

• The objective of this post-doc is to pave the way from an academic solver to a fully operational methodology to assess the effect of actual seismic events. Depending on the background of the candidate, the work could be decomposed into the following steps:
  • Improvement of the fast BEM formulation based on the elastic half-space fundamental solutions.
  • Definition of an efficient high-performance computing strategy.
  • Introduction of various models of realistic sources.
  • Study of the optimal strategy to truncate geological structures of infinite extent.
  • Benchmarking of these advanced methodologies with respect to realistic configurations and seismological data.

References

• Bonnet M. (1999). Boundary integral equations methods in solids and fluids, John Wiley and sons.
• Chaillat S., Bonnet M. (2014). A new Fast Multipole formulation for the elastodynamic half-space Green's tensor, J. Comp. Phys., 258: 787-808.
• Chaillat S., Bonnet M., J.F. Semblat J.F. (2008). A multi-level fast multipole BEM for 3-D elastodynamics in the frequency domain, Comp. Meth. Appl. Mech. Eng., 197: 4233-4249.
• Chaillat S., Desiderio L., Ciarlet P. (2017). Theory and implementation of H-matrix based iterative and direct solvers for Helmholtz and elastodynamic oscillatory kernels. J. Comp. Phys., 351: 165-186.
• Meza-Fajardo K.C., Papageorgiou A.S., Semblat J.F. (2015). Identification and extraction of surface waves from three-component seismograms based on the normalized inner product, Bull. Seism. Soc. Am., 105: 210-229.
• Meza-Fajardo K.C., Semblat J.F., Chaillat S., Luca L. (2016). Seismic-Wave Amplification in 3D Alluvial Basins: 3D/1D Amplification Ratios from Fast Multipole BEM Simulations, Bull. Seism. Soc. Am., 106: 1267-1281.
• Semblat J.F., Pecker A. (2009). Waves and vibrations in soils: earthquakes, traffic, shocks, construction works, IUSS press.