We propose a new numerical approach for the solution of the 2D acoustic wave equation to model the predicted data in the field of active-source seismic inverse problems. This method consists in using an explicit finite difference technique with an adaptive order of approximation of the spatial derivatives that takes into account the local velocity at the grid nodes. Testing our method to simulate the recorded seismograms in a marine seismic acquisition, we found that the low computational time and the low approximation error of the proposed approach make it suitable in the context of seismic inversion problems.

A local adaptive method for the numerical approximation in seismic wave modelling / B.G. Galuzzi, E. Zampieri, E.M. Stucchi. - In: COMMUNICATIONS IN APPLIED AND INDUSTRIAL MATHEMATICS. - ISSN 2038-0909. - 8:1(2017), pp. 14.265-14.281. [10.1515/caim-2017-0014]

A local adaptive method for the numerical approximation in seismic wave modelling

B.G. Galuzzi
Primo
Methodology
;
E. Zampieri
Secondo
;
E.M. Stucchi
Ultimo
2017

Abstract

We propose a new numerical approach for the solution of the 2D acoustic wave equation to model the predicted data in the field of active-source seismic inverse problems. This method consists in using an explicit finite difference technique with an adaptive order of approximation of the spatial derivatives that takes into account the local velocity at the grid nodes. Testing our method to simulate the recorded seismograms in a marine seismic acquisition, we found that the low computational time and the low approximation error of the proposed approach make it suitable in the context of seismic inversion problems.
Finite Difference; Seismic modelling; Seismic inversion; Optimization; Acoustic wave equation
Settore GEO/11 - Geofisica Applicata
Settore MAT/08 - Analisi Numerica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/546368
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