One of the biggest challenges in volcanic hazard assessment is to understand how and why
eruptive style changes within the same eruptive period or even from one eruption to the next …

It is generally accepted that tectonic earthquakes may trigger volcanic activity, although the
underlying mechanisms are poorly constrained. Here, we review current knowledge, and …

Extension fractures in volcanic systems exist on all scales, from microscopic fractures to
large fissures. They play a fundamental role in the movement of fluids and distribution of …

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 …

Magma fragmentation is the breakup of a continuous volume of molten rock into discrete
pieces, called pyroclasts. Because magma contains bubbles of compressible magmatic …

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 …

Silicic volcanic activity has long been framed as either violently explosive or gently effusive.
However, recent observations demonstrate that explosive and effusive behavior can occur …

Silicic lavas can be produced by the sintering of pyroclasts in the volcanic sub-surface, and
then advected out of the vent. Here, we provide evidence for this mechanism preserved in …

The failure mode of lava—dilatant or compactant—depends on the physical attributes of the
lava, primarily the porosity and pore size, and the conditions under which it deforms. The …

Magmatic intrusions and volcanic eruptions are intimately related phenomena. Shallow
magma intrusion builds subsurface reservoirs that are drained by volcanic eruptions. Thus …