Results 31 to 40 of about 128,618 (192)

Relating vesicle shapes in pyroclasts to eruption styles [PDF]

open access: yes, 2013
Vesicles in pyroclasts provide a direct record of conduit conditions during explosive volcanic eruptions. Although their numbers and sizes are used routinely to infer aspects of eruption dynamics, vesicle shape remains an underutilized parameter.
Giachetti, Thomas   +3 more
core   +1 more source

Rapid response petrology for the opening eruptive phase of the 2021 Cumbre Vieja eruption, La Palma, Canary Islands

open access: yesVolcanica, 2022
How and why magmatic systems reactivate and evolve is a critical question for monitoring and hazard mitigation efforts during initial response and ongoing volcanic crisis management.
M. Pankhurst   +12 more
semanticscholar   +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.
J. Birnbaum   +10 more
semanticscholar   +1 more source

Modelling of bubble nucleation in trachy-phonolitic magmas: implications for the dynamics of ash-rich eruptions [PDF]

open access: yes, 2012
Nucleation of water gas bubbles in trachyphonolitic magmatic melts has been investigated integrating theory and numerical modelling with decompression experiments and analysis of natural ash samples of explosive eruptions.
Colucci, Simone
core   +1 more source

The Explosive Activity of the 2021 Tajogaite Eruption (La Palma, Canary Islands, Spain)

open access: yes, 2023
The explosive activity of the 2021 Tajogaite eruption eludes pigeonholing into well‐defined eruption styles, with a variety of pyroclast ejection modes occurring both alternately and simultaneously at multiple vents.
J. Taddeucci   +12 more
semanticscholar   +1 more source

Variability of magma decompression rates during the 1666 CE eruption of Cinder Cone, Lassen Volcanic National Park, CA, USA

open access: yesGoldschmidt2023 abstracts, 2023
Syneruptive magma decompression rate is thought to play a key role in controlling the explosivity of basaltic eruptions due to its influence on bubble formation and migration within the conduit [1–3].
Kyle Kim   +5 more
semanticscholar   +1 more source

EXPLOSIVE-EFFUSIVE ERUPTION OF ALAID VOLCANO IN 2022 (ATLASOVA ISLAND, NORTHERN KURIL ISLANDS)

open access: yesBulletin of Kamchatka Regional Association «Educational-Scientific Center». Earth Sciences, 2023
Data are presented on a moderate effusive-explosive eruption of the summit crater of Alaid volcano (Atlasov Island, Northern Kuril Islands) observed from September 10 to December 1, 2022.
Удк   +3 more
semanticscholar   +1 more source

Stratigraphy and textural characteristics of the 1982–83 tephra of Galunggung volcano (Indonesia): implications for volcanic hazards [PDF]

open access: yes, 2000
91.40.RsThe Galunggung volcano in western Java (Indonesia) was the site of historical activity in 1822, 1894, 1918, and 1982–83, located in a pre-historical horseshoe-shaped caldera.
Bourdier, Jean-Louis   +2 more
core   +3 more sources

Leachate analyses of volcanic ashes from Stromboli volcano: A proxy for the volcanic gas plume composition? [PDF]

open access: yes, 2011
Many volcanoes show a change in chemical composition of the gas phase prior to periods of eruptive activity. Fine‐grained tephra erupted from active vents and transported through volcanic plumes can adsorb, and therefore rapidly scavenge, volatile ...
AIUPPA, Alessandro   +6 more
core   +1 more source

Maars to calderas. End-members on a spectrum of explosive volcanic depressions [PDF]

open access: yes, 2015
We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note—we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not ...
Palladino, Danilo Mauro   +3 more
core   +1 more source

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