3D S-velocity model of the lithosphere-asthenosphere system beneath the Bering Sea

Azimuthal Variation in the Surface-Wave Velocity in the Arabian Plate

“…Figure 8a (dashed lines) shows that the error ε is greater than that corresponding to the former fit, i.e., the fitting given by Equation (1) with five coefficients is better than that with three coefficients (Figure 8b). Nevertheless, Figure 6 shows that the azimuthal variation in phase velocities is not due to anisotropy but to lateral heterogeneity (Figure 9a; [10]), because Equation (1) does not fit the phase velocities satisfactorily within their errors in general. The best fit of Equation ( 1) is achieved at the period of 40 s when the coefficients Ai (with i varying from 2 to 5) are in general negligible within their error (Figures 7 and 8a), and the error ε is greater for the period range in which those are not negligible within their error (e.g., 5-40 s; Figures 7 and 8a).…”

“…Figure 8a (dashed lines) shows that the error ε is greater than that corresponding to the former fit, i.e., the fitting given by Equation (1) with five coefficients is better than that with three coefficients (Figure 8b). Nevertheless, Figure 6 shows that the azimuthal variation in phase velocities is not due to anisotropy but to lateral heterogeneity (Figure 9a; [10]), because Equation (1) does not fit the phase velocities satisfactorily within their errors in general.…”

“…The black circle denotes source zone (Supplement 3 and Figure 1a) and the black triangle denotes station (Supplement 2 and Figure 1a). [10]. The 1500 m isoline is plotted to show the elevated area resulting from the collision between the Arabian and Eurasian plates: the Turkish-Iranian continental plateau.…”

“…Figure 9. (a) Schematic map of the study area[10]. The 1500 m isoline is plotted to show the elevated area resulting from the collision between the Arabian and Eurasian plates: the Turkish-Iranian continental plateau.…”