Lawrence et al., 2012: DRAFT: JGR: Ambient Noise Numerical ...

Lawrence et al., 2012: DRAFT: JGR: Ambient Noise Numerical Evaluation
Figure 7
Figure 7: This figure illustrates the misfit tradeoff between the number of sources per
window (Ns) and the maximum level of uniform incoherent white noise, nmax, at each
receiver. The colors illustrate the misfit between the estimated and known input values
for A) phase velocity, C(ω), and B) attenuation coefficients, α. The misfit is consistently
low for NS > 16 and nmax < 1. The misfits are calculated for simulations having uniformly
random sources and receivers with geometric parameters Ls=1000, Δsx=100 and Lx=100,
where the NCFs were stacked for coherencies of 1800s time windows over 90 days.
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