Vulcanian eruption processes inferred from volcanic glow analysis at Sakurajima volcano, Japan [PDF]
Bulletin of Volcanology, 2023 AbstractVolcanic glow, which is often observed at active craters during nighttime, contains information on high-temperature zones deep in the crater that are hidden from view. We analyzed 90 eruption videos capturing volcanic glow before the onset of Vulcanian eruptions at the Showa crater of Sakurajima volcano (Japan), and found that they show clear ...
Dan Muramatsu +4 more
semanticscholar +3 more sources
Sedimentation process of ashfall during a Vulcanian eruption as revealed by high-temporal-resolution grain size analysis and high-speed camera imaging [PDF]
Progress in Earth and Planetary Science, 2020 We here examined the sedimentation process of falling ash particles during a short-lived Vulcanian eruption at Sakurajima volcano, Japan, using high-speed camera imaging of airborne ash particles, as well as grain size analyses of ash samples collected ...
T. Miwa +3 more
doaj +3 more sources
Rheological Change and Degassing during a Trachytic Vulcanian Eruption at Kilian Volcano, Chaîne des Puys, France [PDF]
Bulletin of Volcanology, 2020 AbstractMagma ascent during silicic dome-forming eruptions is characterized by significant changes in magma viscosity, permeability, and gas overpressure in the conduit. These changes depend on a set of parameters such as ascent rate, outgassing and crystallization efficiency, and magma viscosity, which in turn may influence the prevailing conditions ...
Mathieu Colombier +8 more
semanticscholar +9 more sources
Dynamics and style transition of a moderate, Vulcanian-driven eruption at Tungurahua (Ecuador) in February 2014: pyroclastic deposits and hazard considerations [PDF]
Solid Earth, 2017 The ongoing eruptive cycle of Tungurahua volcano (Ecuador) since 1999 has been characterised by over 15 paroxysmal phases interrupted by periods of relative calm.
J. E. Romero +6 more
doaj +4 more sources
Mechanism of the historical and the ongoing Vulcanian eruptions of Ebeko volcano, Northern Kuriles. [PDF]
Bull Volcanol, 2021 Ebeko is one of the most active volcanoes of the Kurile island arc, producing frequent mild Vulcanian explosions with eruption clouds up to 5 km high. The volcano poses a serious threat to the Severo-Kurilsk town with a population of around 2500 inhabitants, located at a distance of only 7 km on a fan of the volcano's laharic deposits.
Belousov A +4 more
europepmc +8 more sources
Molecular-Dynamics Simulation of Vulcanian Eruption [PDF]
, 2005 Vulcanian explosive eruption, which is a nonlinear and nonequilibrium abrupt dynamics of magma-gas mixture, is modeled by a two-component Lennard-Jones particle system. Molecular-dynamics simulation of a shock-tube experiment gives consistent results with a explosive eruption picture of volcanology; Shock wave and expansion wave are reproduced.
Satoshi Yukawa, Nobuyasu Ito
openalex +3 more sources
A mathematical model of vulcanian eruptions [PDF]
Geophysical Journal International, 1990 SUMMARY The problem of an expansion wave propagating into a saturated magma is solved and used as a model of a vulcanian eruption. In our model for an explosive eruption we assume that a drop in pressure leads to the exsolution of magmatic volatiles. Initially the exsolved vapours create bubbles in the magma.
Donald L. Turcotte +3 more
openalex +3 more sources
Insights into the sticking probability of volcanic ash particles from laboratory experiments [PDF]
Scientific Reports, 2023 Although the characterization of the sticking and aggregation probability is essential to the description of volcanic ash dispersal and sedimentation, there is still no general model describing the sticking probability of volcanic ash. Experiments of dry
Carolina Diaz-Vecino +5 more
doaj +2 more sources
Aerodynamic characteristics and genesis of aggregates at Sakurajima Volcano, Japan [PDF]
Scientific Reports, 2022 Aggregation of volcanic ash is known to significantly impact sedimentation from volcanic plumes. The study of particle aggregates during tephra fallout is crucial to increase our understanding of both ash aggregation and sedimentation.
M. C. Diaz Vecino +9 more
doaj +2 more sources
Integrating hazard, exposure, vulnerability and resilience for risk and emergency management in a volcanic context: the ADVISE model [PDF]
Journal of Applied Volcanology, 2021 Risk assessments in volcanic contexts are complicated by the multi-hazard nature of both unrest and eruption phases, which frequently occur over a wide range of spatial and temporal scales.
Costanza Bonadonna +12 more
doaj +2 more sources