Tobias Keller

Tobias Keller

Visiting Fellow

Research Interests

Dynamic process in the interior of the Earth and other terrestrial planets lead to partial melting of the silicate mineral assemblage that makes up the planet’s rocky outer shell, the mantle and crust. The molten magma produced by upwelling of hot material from the deeper subsurface typically is buoyant with respect to the residual solid rock in which the magma resides, thus leading to magma being exctracted upwards towards the surface. Often magmatism coincides with zones of high deformation, where tectonic plates are forced to collide or break apart by geodynamic processes. As a result, the dynamics of magma formation, extraction and emplacement is highly complex.

 During the past decades, the development of ever more robust and efficient computational methods has led to the emergence of the field of computational magma dynamics, as the dynamics of magmatism are studied by means of numerical simulations of the relevant physics and chemistry of magmatic processes.

 My research aims at furthering the understanding of magma dynamics by expanding and improving the available model descriptions for multi-component multi-phase flow in geodynamics and by developing the next generation of magma dynamics simulation software.

Keller T & Katz R F (2015) Effects of volatiles on melt production and reactive flow in the mantle. arXiv:1510.01334

Keller T, May D A, Kaus B J P (2013) Numerical modeling of magma dynamics coupled to tectonic deformation of lithosphere and crust. Geophys J Int 196. doi:10.1093/gji/ggt306.

Golabek G J, Keller T, Gerya T V, Zhu G, Tackley P J, Connolly J A D (2011) Origin of the martian dichotomy and Tharsis from a giant impact causing massive magmatism. Icarus 2015 (1). doi:10.1016/j.icarus.2011.06.012.

Keller T, Tackley P J (2009) Towards self-consistent modeling of the martian dichotomy: The influence of one-ridge convection on crustal thickness distribution. Icarus 202 (2). doi:10.1016/j.icarus.2009.03.029.