Figure 8

Analysis of recovered velocity for the USArray traveltime modeling case using a depth of 250 km. Traveltime maps for two representative USArray stations indicated by black stars (a,c) and their corresponding recovered velocity models (b,d) are shown. By comparing with the target velocity model at this depth (Fig. 3a), we observe similar velocity trends. Only minor differences are observed that are attributable to different ray coverage for each individual USArray station. The mean recovered velocity (e), taken by averaging over all USArray stations, shows the overall high accuracy of traveltime prediction. The recovered velocity variance (f) across all USArray stations shows negligible differences between the different recovered velocity models.