Abstract
Detecting the roots of mantle plumes and constraining their connections to the Large Low Shear Velocity Provinces (LLSVPs) in the CMB region are critical problems for understanding mantle dynamics. Among the low‐velocity conduits observed in the previous tomography models, the conduit beneath the Samoa/Tahiti region appears to be the most reliable because many models suggest it has a deep root. However, it is not clear whether the models are sufficiently accurate to confirm the reliability of this feature. In this study, we apply the singular value decomposition to confirm that this feature is well constrained by the data. The results indicate the plume beneath the Samoa/Tahiti region rising from the upper surface of the Pacific LLSVP. It might be a plume rising from a chemically distinct dome in the thermo‐chemical convection.
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