Finding an efficient procedure to solve a seismic inversion problem, such as Full Waveform Inversion, still remains an open question. This is mainly due to the non linearity of the misfit function, characterized by the presence of multiple local minima, that cause unsuccessful results of local optimization strategies when the starting model is not in the basin of attraction of the global minimum. Therefore, the use of a global optimization strategy in order to estimate a suitable starting velocity model for Full Waveform Inversion is a crucial point. In this work we propose a new method which is based on the application of the Adaptive Simulated Annealing algorithm using a coarse inversion grid, different from the domain modelling one, that allows the reduction of the number of unknowns. Numerical results show that the application of our strategy to an acoustic Full Waveform Inversion provides a good starting model for a local optimization procedure, lying in the basin of attraction of the global minimum.

Galuzzi, B., Zampieri, E., Stucchi, E. (2017). Global Optimization Procedure to Estimate a Starting Velocity Model for Local Full Waveform Inversion. In Optimization and Decision Science: Methodologies and Applications (pp.171-179). Springer New York LLC [10.1007/978-3-319-67308-0_18].

Global Optimization Procedure to Estimate a Starting Velocity Model for Local Full Waveform Inversion

Galuzzi, B
Primo
;
2017

Abstract

Finding an efficient procedure to solve a seismic inversion problem, such as Full Waveform Inversion, still remains an open question. This is mainly due to the non linearity of the misfit function, characterized by the presence of multiple local minima, that cause unsuccessful results of local optimization strategies when the starting model is not in the basin of attraction of the global minimum. Therefore, the use of a global optimization strategy in order to estimate a suitable starting velocity model for Full Waveform Inversion is a crucial point. In this work we propose a new method which is based on the application of the Adaptive Simulated Annealing algorithm using a coarse inversion grid, different from the domain modelling one, that allows the reduction of the number of unknowns. Numerical results show that the application of our strategy to an acoustic Full Waveform Inversion provides a good starting model for a local optimization procedure, lying in the basin of attraction of the global minimum.
Si
paper
Scientifica
Acoustic wave equation; Seismic inversion; Simulated annealing; Mathematics (all)
English
International Conference on Optimization and Decision Science, ODS 2017
9783319673073
Galuzzi, B., Zampieri, E., Stucchi, E. (2017). Global Optimization Procedure to Estimate a Starting Velocity Model for Local Full Waveform Inversion. In Optimization and Decision Science: Methodologies and Applications (pp.171-179). Springer New York LLC [10.1007/978-3-319-67308-0_18].
Galuzzi, B; Zampieri, E; Stucchi, E
File in questo prodotto:
File Dimensione Formato  
[AIRO 2017] Global Optimization Procedure to Estimate a Starting Velocity Model for Local Full Waveform Inversion.pdf

Solo gestori archivio

Dimensione 220.9 kB
Formato Adobe PDF
220.9 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/204742
Citazioni
  • Scopus 2
  • ???jsp.display-item.citation.isi??? ND
Social impact