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Quantify waveform similarity between synthetic and observed seismograms for 78 stations according to event 3550173m4pt7 using normalized correlation coefficient (NCC) defined as
Here, the synthetic seismograms are generated using srf source for a homogeneous model of Vs=3.0km/s, Vp=6.0 km/s
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Example of removing low-quality observed seismograms with NCC<0.2
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Normalize the observed seismogram (filtered from 0-0.1 Hz) at a station for 3 different events:
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Normalized observed seismograms |
First inversion of the Canterbury velocity model using gsdf broad band selection of the adjoint source for 4 frequencies [0.025 0.05 0.075 0.1] Hz and observed seismograms from 4 earthquake events: 2012p161604m3pt7, 2013p049577m4pt3, 2013p868761m4pt3, 3550173m4pt7
Initial model |
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Inverted model after one iteration |
Cross-sections of the inverted model
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Misfit function and step length:
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Waveform comparison between observed and simulated seismograms after one iteration for event 2012p161604m3pt7
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