[Dottorcomp] Seminari di Matematica Applicata, 30/09/2025, Marcella Bonazzoli

[Stefano Lisini]

Seminari di Matematica Applicata, Dipartimento di Matematica "F. Casorati"
e Istituto del CNR IMATI "E. Magenes" di Pavia.

Martedì 30 Settembre 2025, alle ore 15 precise, presso l'aula Beltrami del
Dipartimento di Matematica,

Marcella Bonazzoli (INRIA e Institut Polytechnique de Paris)
terrà un seminario dal titolo:

Seismic imaging of a dam-rock interface using Full Waveform Inversion.

Abstract: In this talk we are interested in reconstructing the interface
between the concrete structure of a hydroelectric gravity dam and the
underlying rock, using Full Waveform Inversion. Indeed, it appears that the
roughness of the dam-rock interface has an effect on the sliding stability
of gravity dams.
We minimize a regularized misfit cost functional by computing its shape
derivative and iteratively updating the interface shape by the gradient
descent method. At each iteration, we simulate time-harmonic
elasto-acoustic wave propagation models, coupling linear elasticity in the
solid medium with acoustics in the reservoir. Numerical results using
realistic noisy synthetic data demonstrate the method ability to accurately
reconstruct the dam-rock interface, even with a limited number of
measurements.
This is joint work with Mohamed Aziz Boukraa, Lorenzo Audibert, Houssem
Haddar and Denis Vautrin.

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https://matematica.unipv.it/ricerca/cicli-di-seminari/seminari-di-matematica-applicata/