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Fig. 1 | Earth, Planets and Space

Fig. 1

From: TIARES Project—Tomographic investigation by seafloor array experiment for the Society hotspot

Fig. 1

Cross-sections of seismic structure in the entire mantle. S-wave velocities are shown for the upper mantle (0–410 km) and the MTZ (410–660 km). The model of Ritsema and van Heijst (2000) is shown for the MTZ structure. P-wave velocities are shown for the lower mantle (660–2900 km). Velocity scales are ±3% in the upper mantle and the MTZ and ±0.75% in the lower mantle. Green diamonds indicate hotspots in the Polynesian region. (a) Cross-section A–A′, passing the Society and Pitcairn hotspots; (b) cross-section B–B′, passing the Society and Macdonald hotspots. Narrow mantle plumes are indicated by arrows. (c) positions of the profiles. “SC,” “PT,” and “MD” in (c) indicate the Society, Pitcairn, and Macdonald hotspots, respectively. Modified from figure 11 of Suetsugu et al. (2009).

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