TO DO: In this inversion using 16 sources and 49 stations, the broadband selection of adjoint source is only applied for a low frequency band of [0.02 0.03 0.04 0.05] Hz. Seismograms are filtered from 0.02-0.05Hz (The low-cut filter is important for removing low frequency noise before gsdf selection of adjoint source). The inversion finishes after 3 iteration when no optimal step length found.
The true, initial and inverted models:
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Inverted model after an iteration |
Inverted model after 2 iterations |
Misfit function and step length:
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