Mantle Convection, 3D Modeling, Thermochemical Piles, Isochemical Plume Clusters, Tomography, LLSVP, Pangea
I joined the group at PGP in October 2011. My current research is centered on understanding lower mantle dynamics
and the relation to plate tectonic history
. Using the 3D finite element convection code CitcomS and the interactive visualisation program GPlates
, I perform 3D spherical geodynamical calculations of mantle convection using varying plate tectonic histories.
Abigail Bull-Aller obtained her B.Sc (geophysics) from the University of Liverpool in 2002. Following this she studied for her DEA (Masters) at Universite Joseph Fourier in Grenoble, France, where she concentrated on the seismo-volcanic activity at Ruapehu volcano (NZ). Using array seismology techniques, the goal of the project was to obtain a model of the subsurface velocity structure beneath the volcano. Abigail received her PhD in geodynamics from Arizona State University (USA) in 2009. During her PhD study, she concentrated on investigating the reliability of directly comparing global seismic tomographic models with geodynamical models of mantle convection. Due to the heterogeneous nature of tomographic resolution, such comparisons can be fraught with uncertainty. In a collaborative effort with a tomographer and mineral physicist, Abigail developed a method to predict mineral-physics based seismic tomography from 3D spherical geodynamical models. Using this technique, she investigated possible causes of the tomographically observed low-velocity anomalies in the lower mantle beneath Africa and the Pacific. This technique was also employed to determine the error associated with using tomography-derived buoyancy fields in geodynamic convection calculations.