The style and evolution of volcanic eruptions are dictated by the fluid mechanics governing
magma ascent. Decompression during ascent causes dissolved volatile species, such as …

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 …

Over the past 25 years, our understanding of the physical processes that drive volcanic
eruptions has increased enormously thanks to major advances in computational and …

Explosive eruptions are the most powerful and destructive type of volcanic activity. These
eruptions are characterized by magma fragmentation, the process through which a bubbly or …

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 …

The vesicularity, permeability, and structure of pumice clasts provide insight into conditions
of vesiculation and fragmentation during Plinian fall and pyroclastic flow-producing phases …

The permeability of crystal-poor obsidian flow and pumice samples from Medicine Lake
Volcano, USA, are measured to assess (1) the existence of a critical vesicularity (porosity) …

In an explosive eruption, the atmospheric column dynamics depend strongly on the mass
fraction of gas in the erupting mixture, which is fixed by fragmentation in the volcanic conduit …

We examine the physics of growth of water bubbles in highly viscous melts. During the initial
stages, diffusive mass transfer of water into the bubble keeps the internal pressure in the …

The climactic event of Mount Pinatubo represents one of the most thoroughly studied
eruptions of the century and has provided important insights into the dynamics of explosive …