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A Unifying Model for Pyroclastic Surge Genesis and Pyroclastic Flow Fluidization
Geophysical Research Letters, 2022 AbstractPyroclastic density currents (PDCs) are hot and fast ground‐hugging mixtures of volcanic fragments and gases, which represent a major threat to people living near explosive volcanoes. Mechanisms causing the separation into the concentrated (the pyroclastic flow) and dilute (the pyroclastic surge) layers, as well as the mechanism causing their ...
Kelfoun, Karim, Gueugneau, Valentin
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Fluid Outflows From Venus Impact Craters: Analysis From Magellan Data [PDF]
, 1992 Many impact craters on Venus have unusual outflow features originating in or under the continuous ejecta blankets and continuing downhill into the surrounding terrain. These features clearly resulted from flow of low-viscosity fluids, but the identity of
Asimow, Paul D., Wood, John A.
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Abrasion in pyroclastic flows [PDF]
Geologische Rundschau, 1992 The relative size of glass rims coating crystals in the matrix ash provides a semi-quantitative measure of abrasion of ash grains in pyroclastic flows. Median abrasion indices (= areacrystal / areaglass rim) are 8.4 to 18.5 in Laacher See pyroclastic flow units but only 4 to 6.3 in assocciated fallout, showing stronger abrasion of ash particles in the ...
Schmincke, H.-U., Freundt, A.
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Frontiers in Earth Science, 2020 Pyroclastic density currents (PDCs) are a destructive volcanic hazard. Quantifying the types, frequency and magnitudes of PDC events is essential for effective risk management, but since historical records at best extend a few hundred years this usually ...
James Cowlyn +4 more
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A thermodynamical model for rainfall-triggered volcanic dome collapse [PDF]
, 2004 Dome-forming volcanic eruptions typically involve the slow extrusion of viscous lava onto a steep-sided volcano punctuated by collapse and the generation of hazardous pyroclastic flows.
Adrian J. Matthews +14 more
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Tracking Pyroclastic Flows at Soufrière Hills Volcano [PDF]
Eos, Transactions American Geophysical Union, 2009 Explosive volcanic eruptions typically show a huge column of ash and debris ejected into the stratosphere, crackling with lightning. Yet equally hazardous are the fast moving avalanches of hot gas and rock that can rush down the volcano's flanks at speeds approaching 280 kilometers per hour. Called pyroclastic flows, these surges can reach temperatures
RIPEPE, MAURIZIO +7 more
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Interpretation of Bouguer Anomaly to Determine Fault and Subsurface Structure at Blawan-ijen Geothermal Area [PDF]
, 2016 Gravity survey has been acquired by Gravimeter Lacoste & Romberg G-1035 at Blawan-Ijen geothermal area. It was a focusing study from previous research.
Azhari, A. P. (Anjar) +2 more
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A pyroclastic flow deposit on Venus [PDF]
Geological Society, London, Special Publications, 2013 Abstract Explosive volcanism on Venus is severely inhibited by its high atmospheric pressure and lack of water. This paper shows that a deposit located near 16°S, 145°E, here referred to as Scathach Fluctus, displays a number of morphological characteristics consistent with a pyroclastic flow deposit.
Ghail, RC, Wilson, L
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Kuwait Journal of Science, 2023 Indonesia is surrounded by three tectonic plates: the Eurasian, Indo−Australian, and Pacific plates. The plates have caused Indonesia to have many volcanoes, both active and inactive, resting, or no longer active.
Budi Legowo +6 more
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Ecology and Evolution, 2021 Volcanic eruptions are one of the largest natural disturbances and are followed by the establishment of novel plant and animal communities in terrestrial ecosystems.
Kyohei Iida +5 more
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