Independently invert Vs and Vp models for 10 iterations at 0 - 0.05Hz frequency band. The Vs profile has been updated faster the Vp profile due to more sensitivity to the adjoint wavefield method. A joint-update (dependently update) for Vs and Vp profiles is suggested to improve the convergence of the method according to the given true model.
True model |
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Initial model |
Inverted model after 1 iteration |
Inverted model after 10 iterations |
The normalized error and step length along the iterations:
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The Vs and Vp gradients at the first iteration
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2-D profiles of the gradients at the first iteration
z=25 km |
y=100 km |
x=100km |
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