TO DO: match the observed data filtered from 0-0.2Hz after 4 iterations of FWT using GSDF method. The adjoint sources was selected in a broad-band filter from 0-0.1Hz. Two initial models were used to compare the convergence of the method to a final inverted model.
A) Homogeneous initial model
Velocity models in the inversion process
Initial model |
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Iteration 1 |
Iteration 4 |
The misfit function after 4 iterations
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Waveform comparison after 4 iterations for event 2012p161604m3pt7
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B) Smooth initial model given by Gaussian filtering a 3-D geological model (Lee 2017)
Smooth initial model |
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Iteration 1 |
Iteration 4 |
The misfit function after 4 iterations
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Waveform comparison after 4 iterations for event 2012p161604m3pt7
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Cross-session comparison between initial and inverted models at z=2km; y=40km and x=40km
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Second run using adjoint source broad-band filter [0-0.2]Hz and data filter [0-0.2]Hz
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Inverted model after 2 iterations |
Waveform comparison
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