1 research outputs found
Crosswell seismic tomographic inversion using NSGA II
In the present paper, the solution of the seismic data inversion problem
through multi-objective optimization with NSGA II is addressed. The seismic
inversion consists of estimating the slowness of rocks in the subsurface from
the travel times of the waves through the transmitters and receivers of the
seismic waves. The inversion process uses the multi-objective optimization
technique, in which it is necessary to estimate the trade-off between the
misfit functional and the stabilizing constraint. The constraint used was the
classic first-order Tikhonov. A synthetic model of inclined layers was chosen.
The results obtained were acceptable. Based on the graph of the cumulative
errors related to the solution, it was estimated correctly, that is, the
optimization method used was effective to obtain acceptable results, in
addition to the constraint solving the instability problem of the inverse
problem treated. Another important result was the achievement of a convergence
curve on the Pareto frontier, an important result for future research.Comment: 14 pages, 12 figure