Investigation of Mantle Structure Beneath Subducting Slabs
These researchers are investigating mantle structure beneath subducting former oceanic lithosphere. This region is of interest because of the profound differences in mantle water content compared with the "wet" mantle above the slab. Differences in how the cold slab affects mineralogical phase transitions between the dry sub-slab and wet supra-slab regions offers unique insight into the role water plays in mantle circulation and how abundant it is. This work requires detailed synthetic seismogram calculations in three dimensions and computation of the seismic structure expected with 3D mantle circulation.