Two-Level preconditioned Krylov subspace methods for the solution of three-dimensional heterogeneous Helmholtz problems in seismics

DOI10.1134/S1995423912020127zbMath1299.65253MaRDI QIDQ5407722

Serge Gratton, Xavier Pinel, Henri Calandra, Rafael Lago, Xavier Vasseur

Publication date: 7 April 2014

Published in: Numerical Analysis and Applications (Search for Journal in Brave)

zbMATH Keywords

algorithmnumerical resultsmultigrid methodHelmholtz equationfinite difference methodsinhomogeneous mediainexact preconditioningseismicsacoustic waveform inversionflexible Krylov subspace method

Mathematics Subject Classification ID

Multigrid methods; domain decomposition for boundary value problems involving PDEs (65N55) Seismology (including tsunami modeling), earthquakes (86A15) Iterative numerical methods for linear systems (65F10) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) Finite difference methods for boundary value problems involving PDEs (65N06) Numerical solution of discretized equations for boundary value problems involving PDEs (65N22) Preconditioners for iterative methods (65F08)

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