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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
decompression rates (d P/dt), and rates of cooling (d T/dt):, where ρ is magma density, P is …