How volcanoes work: A 25 year perspective

KV Cashman, RSJ Sparks - Bulletin, 2013 - pubs.geoscienceworld.org
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 …

Dynamics of magma ascent in the volcanic conduit

HM Gonnermann, M Manga… - … volcanic processes: The …, 2013 - books.google.com
In the broadest sense, volcanic eruptions are either effusive or explosive. During explosive
eruptions magma fragments and eruption intensity is ultimately related to the fragmentation …

Basaltic explosive volcanism: constraints from deposits and models

BF Houghton, HM Gonnermann - Geochemistry, 2008 - Elsevier
Basaltic pyroclastic volcanism takes place over a range of scales and styles, from weak
discrete Strombolian explosions (∼ 102–103kgs− 1) to Plinian eruptions of moderate …

Dynamics of magma degassing

RSJ Sparks - 2003 - pubs.geoscienceworld.org
Gas exsolution and segregation are fundamental controls on eruption dynamics and magma
genesis. Basaltic magma loses gas relatively easily because of its low viscosity. However …

Controls on conduit magma flow dynamics during lava dome building eruptions

O Melnik, RSJ Sparks - Journal of Geophysical Research: Solid …, 2005 - Wiley Online Library
Lava dome eruptions commonly display fairly regular alternations between periods of high
and low or no activity with timescales typically of weeks to years and sudden transitions …

Physics‐based models of ground deformation and extrusion rate at effusively erupting volcanoes

K Anderson, P Segall - Journal of Geophysical Research: Solid …, 2011 - Wiley Online Library
We present a model of effusive silicic volcanic eruptions which relates magma chamber and
conduit physics to time‐dependent data sets, including ground deformation and extrusion …

The effects of outgassing on the transition between effusive and explosive silicic eruptions

W Degruyter, O Bachmann, A Burgisser… - Earth and Planetary …, 2012 - Elsevier
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 …

Eruptive parameters and dynamics of the April 2015 sub-Plinian eruptions of Calbuco volcano (southern Chile)

A Castruccio, J Clavero, A Segura, P Samaniego… - Bulletin of …, 2016 - Springer
We conducted geological and petrological analyses of the tephra fallout and pyroclastic
density current (PDC) products of the 22-23 April 2015 Calbuco eruptions. The eruptive …

[HTML][HTML] Reconciling bubble nucleation in explosive eruptions with geospeedometers

S Hajimirza, HM Gonnermann, JE Gardner - Nature communications, 2021 - nature.com
Magma from Plinian volcanic eruptions contains an extraordinarily large numbers of
bubbles. Nucleation of those bubbles occurs because pressure decreases as magma rises …

A new model to estimate deep-level magma ascent rates, with applications to Mt. Etna (Sicily, Italy)

P Armienti, C Perinelli, KD Putirka - Journal of Petrology, 2013 - academic.oup.com
Magma ascent velocities, v (d H/dt; where H is depth and t is time), can be determined from
decompression rates (d P/dt), and rates of cooling (d T/dt):, where ρ is magma density, P is …