Extended Data Fig. 3: Maps of azimuthally averaged group and phase velocity.
From: Water input into the Mariana subduction zone estimated from ocean-bottom seismic data

a, b, Group velocity (colour scale) at periods of 10 s (a) and 21 s (b) inverted by ANT. c, d, Phase velocity (colour scale) at periods of 10 s (c) and 21 s (d) from ANT. e, f, Phase velocity (colour scale) for periods of 25 s (e) and 40 s (f) inverted by HT. 3-km, 4-km and 5-km bathymetry contours are shown as thin grey lines. The trench axis and serpentine seamounts are shown as in Fig. 1a.