We consider the current state of our understanding of the rheology of two-phase magmas,
that is suspensions of either bubbles or crystals in a viscous silicate melt. The discussion is …

Bubble nucleation is at the heart of magma ascent and degassing. Nucleation kinetics
control how easily a magma exsolves its volatiles, and thereby its explosivity close to the …

Permeability of the edifice is one of the key parameters governing eruptive style, magnitude,
and frequency of active stratovolcanoes. This study presents a suite of density and …

We synthesize field and experimental data to evaluate relationships between the textures
and sizes of pyroclasts and the processes that shape them, with emphasis on the role of …

Pore connectivity is a measure of the fraction of pore space (vesicles, voids or cracks) in a
material that is interconnected on the system length scale. Pore connectivity is …

To illustrate the advances made in permeability calculations combining X-ray
microtomography and lattice Boltzmann method simulations, a sample suite of different …

The eruption style of silicic magmas is affected by the loss of gas (outgassing) during ascent.
We investigate outgassing using a numerical model for one-dimensional, two-phase, steady …

The ease at which exsolving volatiles can migrate though magma and outgas influences the
explosivity of a volcanic eruption. Volcanic rocks often contain discrete discontinuities …

Low permeability dome rocks may contribute to conduit overpressure development in
volcanic systems, indirectly abetting explosive activity. The permeability of dome-forming …

Abstract The Masaya Triple Layer tephra was deposited~ 2100 years ago during a basaltic
Plinian eruption of Masaya caldera, Nicaragua, and is one of few known examples of this …