Fig. 16

S-wave velocity structures in central Alaska and central Cascadia. Across-arc seismic sections are shown along lines in the inset maps under a central Alaska and b central Cascadia (Abers et al. 2013, originally from Rondenay et al. 2008, 2010 and Abers et al. 2009). Colored images show migrated teleseismic P coda as dVs/Vs (S-wave velocity perturbation). dVs/Vs values are shown by the color scale at the bottom; red and blue correspond to slow and fast velocities, respectively. Black circles denote earthquakes. Dotted and solid lines indicate the upper slab surface and the slab Moho, respectively. Inverted black triangles show seismic stations used, and the red triangle in b shows a volcano