Results 21 to 30 of about 455 (195)

Physical parameterization of Strombolian eruptions via experimentally‐validated modeling of high‐speed observations [PDF]

open access: greenGeophysical Research Letters, 2012
Pressurized gas drives explosive volcanic eruptions. Existing models can predict the amount and pressure of gas in erupting magma, but application and testing of such models is currently limited by the accuracy of input parameters from natural systems.
Jacopo Taddeucci   +7 more
openalex   +6 more sources

Multiparameter quantification of gas release during weak Strombolian eruptions at Pacaya Volcano, Guatemala [PDF]

open access: bronzeGeophysical Research Letters, 2010
Activity at Pacaya volcano, Guatemala is characterized by persistent degassing, coupled at times with lava effusion and/or coincident Strombolian‐style explosions. We used 0.25 Hz sample rate sulfur dioxide emission data from a UV camera and coincident infrasound recordings to investigate the link between varied emission rates and infrasound events ...
M. P. Dalton   +3 more
openalex   +4 more sources

Gas slug ascent in a stratified magma: Implications of flow organisation and instability for Strombolian eruption dynamics [PDF]

open access: greenEarth and Planetary Science Letters, 2016
The canonical Strombolian paradigm of a gas slug ascending and bursting in a homogeneous low-viscosity magma cannot explain the complex details in eruptive dynamics recently revealed by field measurements and textural and geochemical analyses. Evidence points to the existence of high-viscosity magma at the top of the conduit of Strombolian-type ...
Antonio Capponi, M. R. James, S. J. Lane
openalex   +4 more sources

Submarine strombolian eruptions on the Gorda mid-ocean ridge

open access: closed, 2003
Compositionally variable limu o Pele occurs in widely distributed sediments collected during ROV Tiburon dives along the Gorda Ridge axis. The fragments formed deeper than the critical depth of seawater and are unlikely to be formed by supercritical expansion of seawater upon heating in contact with hot lava. Discharge of CO 2 through erupting lava is
David A. Clague   +2 more
openalex   +5 more sources

Explosive Activity on Kīlauea's Lower East Rift Zone Fueled by a Volatile‐Rich, Dacitic Melt

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Magmas with matrix glass compositions ranging from basalt to dacite erupted from a series of 24 fissures in the first 2 weeks of the 2018 Lower East Rift Zone (LERZ) eruption of Kīlauea Volcano.
Penny E. Wieser   +9 more
doaj   +1 more source

Temporal variability of explosive activity at Tajogaite volcano, Cumbre Vieja (Canary Islands), 2021 eruption from ground-based infrared photography and videography

open access: yesFrontiers in Earth Science, 2023
The 2021 eruption at Tajogaite (Cumbre Vieja) volcano (La Palma, Spain) was characterized by Strombolian eruptions, Hawaiian fountaining, white gas-dominated and grey ash-rich plumes, and lava effusion from multiple vents.
Janine Birnbaum   +15 more
doaj   +1 more source

Explosive Volcanism in a tuff-dominated Intraplate Setting, Sarmiento Formation (Middle Eocene- lower Miocene), Patagonia Argentina

open access: yesLatin American Journal of Sedimentology and Basin Analysis, 2021
The Sarmiento Formation (middle Eocene to early Miocene) represents the distal record of the activity of the Andean volcanic arc in central Patagonia, mainly dominated by accumulation and reworking of fine ash in a low-gradient continental setting ...
José Matildo Paredes   +5 more
doaj   +2 more sources

Magmatic Processes at La Soufrière de Guadeloupe: Insights From Crystal Studies and Diffusion Timescales for Eruption Onset

open access: yesFrontiers in Earth Science, 2021
Signals of volcanic unrest do not usually provide insights into the timing, size and style of future eruptions, but detailed analysis of past eruptions may uncover patterns that can be used to understand future eruptive behavior.
Abigail Metcalfe   +11 more
doaj   +1 more source

Gas flow dynamics in the conduit of Strombolian explosions inferred from seismo-acoustic observations at Aso volcano, Japan

open access: yesEarth, Planets and Space, 2019
Strombolian explosions are one of the most studied eruptive styles and are characterized by intermittent explosions. The mechanism of a Strombolian explosion is modeled as a large gas pocket (slug) migrating through the magma conduit and then bursting at
Kyoka Ishii   +5 more
doaj   +1 more source

Volcanic ballistic projectile deposition from a continuously erupting volcano: Yasur Volcano, Vanuatu

open access: yesVolcanica, 2020
Volcanic ballistics are the main hazard to life and infrastructure from Strombolian eruptions, which are a tourist drawcard, exposing people to this hazard.
Rebecca Hanna Fitzgerald   +8 more
doaj   +1 more source

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