A polarized-trace preconditioner for 2D Helmholtz and frequency domain full-waveform inversion
R.J. Hewett, L. Zepeda-Nunez, and L. Demanet (MIT, Cambridge, USA)

Full-waveform inversion is a method for recovering Earth's physical parameters by matching seismic observations with geophysical simulations. To avoid issues due to nonconvexity in full-waveform inversion, the problem is treated in the frequency domain. Frequency domain imaging requires scalable solvers for the Helmholtz equation to make feasible imaging in high resolution and in 3D; however, this remains an open problem. We present recent developments on a domain-decomposition preconditioner for the acoustic Helmholtz equation, based on the notion of polarization, that demonstrates substantial scalability and performance improvements over the state-of-the-art.


Key dates

  • Abstract submission deadline:
    30th June 2014
  • Early registration deadline:
    19th May 2014
  • Registration deadline:
    26th August 2014

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