Modeling Dike Propagation in Both Vertical Length and Horizontal Breadth

We present analog experiments on dike propagation, followed by a numerical model of horizontal and vertical growth, which is partially analytical based empirical observations. Experimental results show that the growth rates are similar until buoyancy becomes significant and, afterward, dominates. The defined for different conditions in homogeneous medium: (a) constant flux, fracture-limited propagation; (b) viscous-limited (c) variable flux dependent driving pressure dimensions. These distinguish between cases when influx depends deeper source magma (e.g., conduit, independent geometry) it dike, so can change as grows. In all cases, ratio to propagation proportional pressure, drives propagation. test dikes observed at Piton de la Fournaise, dimensions were estimated using geodetic seismic data. final be reproduced magma-crust density differences 50–300 kg/m3, viscosities 30–300 Pa·s, influxes 50–750 m3/s shear moduli ?10 GPa. modeled host rock parameters agree with previous studies volcano, while higher than what typically during eruption. This implies injection condition, peaks diminishes onset