Elastodynamic FWI in 2D with partial stacking
Vladimir Zubov, Gary F. Margrave, Michael P. Lamoureux
The present study is devoted to stability and noise-resistance of the partial stack Full Waveform Inversion (FWI) iterative algorithm numerical investigation with the method applied to elastodynamic partial differential equation boundary problem. The economic efficiency of the partial stack was verified on the test model in comparison with full stack FWI. Both non-uniform error in the right hand of the non-linear operator inverse problem and the iterative FWI algorithm convergence behavior were considered as objects of the numerical investigations.
The particular authors' attention was paid to numerical comparison of the density FWI with bulk modulus FWI convergence taking corresponding imaging conditions into consideration. The imaging conditions for both fields FWI are derived explicitly from elastodynamic conservation laws formulated in integral form.