Modeling dike propagation in both vertical length and horizontal breadth

Abstract

Analog experiments indicate that dike propagation in the vertical and horizontal directions depends on the buoyancy and source pressure • We define a numerical model in which growth depends on influx and different pressure ratios, which evolve with time • The model reproduces the geometries and velocities for nine dikes in nature, using plausible values for magma and host rock rheology

Mechanical modeling of pre-eruptive magma propagation scenarios at calderas

“…The pathways predicted by our model, however, may be combined with existing models of dike velocity to integrate the two approaches (e.g. Pinel et al, 2017;Pansino et al, 2022).…”

“…Dike trajectory models have recently evolved from two dimensional (2D) -2-manuscript submitted to JGR: Solid Earth (Anderson, 1937;O. H. Muller & Pollard, 1977;Pollard, 1987;Dahm, 2000a) to partially (Sigmundsson et al, 2015;Heimisson et al, 2015;Pansino et al, 2022), and, finally, fully three-dimensional (3D) by (Davis et al, 2020(Davis et al, , 2021. The latter model extends to 3D the maximum strain energy release rate trajectory calculation approach introduced by Dahm (2000a); a 3D equivalent of the simple 2D streamline approaches is still missing.…”