Controls on explosive-effusive volcanic eruption styles

M Cassidy, M Manga, K Cashman… - Nature …, 2018‏ - nature.com
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 …

Strain localization in magmas

Y Lavallée, JE Kendrick - Reviews in Mineralogy and …, 2022‏ - pubs.geoscienceworld.org
One of the most intriguing and (from the point of view of modeling) poorly understood
aspects of geomaterial mechanics is strain localization. Strain localization is a common …

Correction scheme for point-particle models applied to a nonlinear drag law in simulations of particle-fluid interaction

JAK Horwitz, A Mani - International Journal of Multiphase Flow, 2018‏ - Elsevier
Drag laws for particles in fluids are often expressed in terms of the undisturbed fluid velocity,
defined as the fluid velocity a particle sees before its disturbance develops in the fluid. In two …

Oxide nanolitisation-induced melt iron extraction causes viscosity jumps and enhanced explosivity in silicic magma

F Cáceres, KU Hess, M Eitel, M Döblinger… - Nature …, 2024‏ - nature.com
Explosivity in erupting volcanoes is controlled by the degassing dynamics and the viscosity
of the ascending magma in the conduit. Magma crystallisation enhances both …

Blowing off steam: tuffisite formation as a regulator for lava dome eruptions

JE Kendrick, Y Lavallée, NR Varley… - Frontiers in Earth …, 2016‏ - frontiersin.org
Tuffisites are veins of variably sintered, pyroclastic particles that form in conduits and lava
domes as a result of localized fragmentation events during gas-and-ash explosions. Those …

Vesiculation and quenching during surtseyan eruptions at hunga tonga‐hunga ha'apai volcano, tonga

M Colombier, B Scheu, FB Wadsworth… - Journal of …, 2018‏ - Wiley Online Library
Surtseyan eruptions are shallow to emergent subaqueous explosive eruptions that owe
much of their characteristic behavior to the interaction of magma with water. The difference …

Combined effusive-explosive silicic volcanism straddles the multiphase viscous-to-brittle transition

FB Wadsworth, T Witcher, CEJ Vossen, KU Hess… - Nature …, 2018‏ - nature.com
Magma is a viscoelastic fluid that can support fracture propagation when local shear
stresses are high, or relax and flow when shear stresses are low. Here we present …

From rock to magma and back again: The evolution of temperature and deformation mechanism in conduit margin zones

MJ Heap, M Violay, FB Wadsworth, J Vasseur - Earth and Planetary …, 2017‏ - Elsevier
Explosive silicic volcanism is driven by gas overpressure in systems that are inefficient at
outgassing. The zone at the margin of a volcanic conduit—thought to play an important role …

In situ confirmation of permeability development in shearing bubble-bearing melts and implications for volcanic outgassing

ARL Kushnir, C Martel, R Champallier… - Earth and Planetary …, 2017‏ - Elsevier
The ferocity of volcanic eruptions–their penchant for either effusive or explosive behaviour–
is to a large extent a matter of the ease with which volatiles are able to escape the volcanic …

Conduit dynamics in transitional rhyolitic activity recorded by tuffisite vein textures from the 2008–2009 Chaitén Eruption

E Saubin, H Tuffen, L Gurioli, J Owen… - Frontiers in Earth …, 2016‏ - frontiersin.org
The mechanisms of hazardous silicic eruptions are controlled by complex, poorly-
understood conduit processes. Observations of recent Chilean rhyolite eruptions have …