Volcanic ash classification through Machine Learning
Geochemistry, Geophysics, Geosystems, 2023 Volcanic ash provides information that can help understanding the evolution of volcanic activity during the early stages of a crisis, and possible transitions towards different eruptive styles. Ash consists of particles from a range of origins in the volcanic system and its analysis can be indicative of the processes driving activity.
Damià Benet +2 more
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A review of volcanic ash aggregation [PDF]
Physics and Chemistry of the Earth, Parts A/B/C, 2012 Most volcanic ash particles with diameters
Brown, R.J., Bonadonna, C., Durant, A.J.
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Compressive Strength of Volcanic Ash/Ordinary Portland Cement Laterized Concrete [PDF]
, 2010 This study investigates the effect of partial replacement of cement with volcanic ash (VA) on the compressive strength of laterized concrete. A total of 192 cubes of 150mm dimensions were cast and cured in water for 7, 14, 21, and 28 days of hydration ...
Olawuyi, B. J, Olusola, K. O
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Nonisothermal viscous sintering of volcanic ash [PDF]
Journal of Geophysical Research: Solid Earth, 2014 AbstractVolcanic ash is often deposited in a hot state. Volcanic ash containing glass, deposited above the glass transition interval, has the potential to sinter viscously both to itself (particle‐particle) and to exposed surfaces. Here we constrain the kinetics of this process experimentally under nonisothermal conditions using standard glasses.
Wadsworth, Fabian B. +6 more
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Subduction zone volcanic ash can fertilize the surface ocean and stimulate phytoplankton growth: Evidence from biogeochemical experiments and satellite data [PDF]
, 2007 Volcanoes confront Earth scientists with new fundamental questions: Can airborne volcanic ash release nutrients on contact with seawater, thereby excite the marine primary productivity (MPP); and, most notably, can volcanoes through oceanic fertilization
Bains +35 more
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Arsenic-bearing phases in South Andean volcanic ashes: Implications for As mobility in aquatic environments [PDF]
, 2015 Three samples of volcanic ashes collected after eruptions of the volcanos Hudson in 1991, Chaitén in 2008 and Puyehue in 2011 were analyzed in order to define the solid speciation of arsenic and the dynamics of its release to the aqueous phase.
Bia, Gonzalo Luis +3 more
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Volcanic ash melting under conditions relevant to ash turbine interactions [PDF]
Nature Communications, 2016 AbstractThe ingestion of volcanic ash by jet engines is widely recognized as a potentially fatal hazard for aircraft operation. The high temperatures (1,200–2,000 °C) typical of jet engines exacerbate the impact of ash by provoking its melting and sticking to turbine parts.
Wenjia Song +5 more
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Evaluating the structure and magnitude of the ash plume during the initial phase of the 2010 Eyjafjallajökull eruption using lidar observations and NAME simulations [PDF]
, 2011 The Eyjafjallajökull volcano in Iceland erupted explosively on 14 April 2010, emitting a plume of ash into the atmosphere. The ash was transported from Iceland toward Europe where mostly cloud-free skies allowed ground-based lidars at Chilbolton in ...
A. Ansmann +38 more
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A tubular protozoan predator: a burrow selectively filled with tubular agglutinated protozoans (Xenophyophorea, Foraminifera) in the abyssal South China Sea [PDF]
, 2004 We report the occurrence of an unusual agglutinated protozoan-filled burrow recovered in a box core collected in 1998 from a depth of 2496 m in the South China Sea.
Kaminski, M.A., Wetzel, A.
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Volcanic ash beds in the Waikato district [PDF]
, 1967 This report lies somewhere between the "pathfinder" variety and the completed account for the reason that the results of detailed mapping and identification are still being prepared for publication. For the younger beds less than 36,000 years we now know
Pullar, W.A.
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