Professor in Computational Geophysics / Geodynamics at the Australian National University. Specialist in numerical modeling of non-linear Earth processes and leader of the Underworld Geodynamics Group
Geodynamics
(they don't make them like they used to ... ) Cratons are anomalously-strong regions of the continents that have largely resisted tectonic forces for billions of years. How such strong zones could be forged in a hot, low-viscosity, low stress, early-Earth has been a long-standing puzzle for geologists. Adam Beall,
Geodynamics
Modelling the relative time-scales of the Rayleigh-Taylor Instability and delamination, using Underworld With Adam Beall, Cardiff University. Why model sub-continental gravitational instabilities? Within the plate tectonics framework, continents are generally considered to have a much lower density than the asthenosphere below and therefore avoid the kind of recycling that the
Geodynamics
In honour of Hans Mühlhaus' 70th birthday this month, here are some shear band simulations made with Underworld. We are investigating the role of dilatancy in the geometry of the shear bands for a box of material when a small trapdoor is opened. The extent to which large-scale deformation
Underworld Code
(aka the Underworld renovation project) Underworld [https://www.underworldcode.org/] is our parallel, particle-in-cell, finite element geodynamics code [1]. For the past year or so, the Underworld team [http://www.facebook.com/underworldcode] has been working on a refurbished user interface. We've known for a long time that
Geodynamics
In a recent paper [1], we used Underworld models to examine subduction congestion associated with the ingestion of a continental ribbon. The SE Australian geological record turned out to be a wonderful place to study this process. Here is a short summary of the work for a relatively non-technical audience
