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Geodynamics

Geodynamics

Geodynamics, modelling and applications of computational software to Earth dynamics problems

Compressible convection in cartesian coordinates with Underworld3

Compressible convection in cartesian coordinates with Underworld3

Introduction and benchmarking The convection of the Earth’s mantle is usually modelled as an incompressible process, referred to as the Boussinesq approximation. However, in the Earth’s mantle, the pressure increase associated with depth also increases the density due to self-compression (King et al. 2010). In some applications, this

Stress recovery in Underworld

Stress recovery in Underworld

Issues with intra-element discontinuities in PIC-FEM The classical finite element method (FEM) has been widely used to simulate diverse problems in engineering. Unlike most engineering problems, geological simulations are dominated by emergence of geometrical structures due to the non-linear processes involved. For the structurally conforming FEM meshes, the large deformations

Australian cities are quiet during lockdown. Earthquake scientists are making the most of it

Australian cities are quiet during lockdown. Earthquake scientists are making the most of it

Meghan S. Miller (ANU) Louis Moresi (ANU) Our responses to the COVID-19 pandemic have dramatically changed human activity all over the world. Sensitive instruments are detecting far less of the noise and vibration produced by humans in motion.

Underworld publication news: Crustal thickness anomalies in stable continents.

Underworld publication news: Crustal thickness anomalies in stable continents.

The Underworld team would like to congratulate Bénédicte Cenki-Tok and co-authors at the University of Sydney and the University of Montpellier on their recent publication, B. Cenki-Tok, P.F. Rey, D. Arcay; Strain and retrogression partitioning explain long-term stability of crustal roots in stable continents. Geology doi: https://doi.org/

Viscoelasticity in Underworld2

Viscoelasticity in Underworld2

Viscoelastic materials exhibit the properies of both solids and liquids, with deformation rates dependent on both the viscous stress and elastic stress rate. In a Maxwell viscoelastic material the strain rate $D$ is proportional to the sum of the stress $\tau$ and the stress rate $\dot\tau$, \begin{equation} D_

Alaska Moho Model (Reproducible research with containers)

Alaska Moho Model (Reproducible research with containers)

Making your research reproducible means that you provide the entire workflow from data, through software and post-processing freely available. Not only can somebody repeat your experiments and verify them, they can build upon them. In lab-based disciplines, there are many further challenges, but in research that is predominantly based on

Craton Formation and the Onset of Plate Tectonics

Craton Formation and the Onset of Plate Tectonics

(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, Katie Cooper