The true and initial model for inversion:
True model |
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Initial model |
The first inversion run using frequency bandwidth 0 - 0.05 Hz:
The inverted models after iterations
Iteration 1 |
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Iteration 2 |
The artifacts found in the inverted result at depth below 50km (source locations) were caused by reflections from the bottom boundary of the domain. Those artifacts can be eliminated by implementing more damping near the bottom of the domain or extending the simulated domain.
The error function reduces significantly after 2 iterations:
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The seismogram comparison for one source at a station:
vx |
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vy |
vz |
1-D profiles with depth comparison for the true model, initial model and inverted model at location: x=100km, y=100km
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The first inversion run using frequency bandwidth 0 - 0.075 Hz:
Initial model for the second inversion run or last inverted model for the first run |
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The error function reduces significantly after 3 iterations:
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The seismogram comparison for one source at a station:
vx |
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vy |
vz |
The normalized error between observed and simulated data filtered at a uniform frequency band from 0 - 0.2 Hz
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