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Geochemical and geotechnical characterization of compacted air-fall tephras
2023Presentation by University of Canterbury PhD student Shaurya ...
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The opening subplinian phase of the Hekla 1991 eruption: properties of the tephra fall deposit
Bulletin of Volcanology, 2017The 1991 Hekla eruption started on 17th of January with an intense 50-min-long explosive phase that transitioned into fire fountain activity lasting for 2 days. The eruptive plume rose to maximum height in about 10 min and the total mass of tephra deposited from the opening phase was 8.6 × 109 kg (VEI 3 event).
Jonas Gudnason +3 more
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Some Effects of Tephra Falls on Buildings
1981A survey of the volcanological literature reveals that only limited generalisations concerning the effects of volcanic bomb impacts and tephra loads on buildings can be made. By using data from a variety of other sources, however, it is possible to define the impact energies required to penetrate or damage a variety of building materials.
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Combined effects of wind and column mass distribution on tephra fall deposits
Environmental Software, 1990Abstract A 2D1/2 model of volcanic ashes (tephra) dispersion, based on an analytical solution of the advection-diffusion equation, is presented. By this model the correlation between a double maximum in thickness and a punctual bimodal size distribution in plinian deposit of volcanic eruptions is outlined for the first time.
P. Armienti, G. Macedonio, M.T. Pareschi
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Forest fire following Holocene tephra fall
1981The rhyolitic eruptions of the Taupo Pumice (c. 1800 B.P.) and the Kaharoa Ash (c. 700 B.P.) devastated forest close to the volcanic source. However, pollen diagrams from regions up to 150 km from the volcanic centre show that widespread fires were common over an appreciable period after both eruptions.
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The Toba supervolcanic eruption: Tephra-fall deposits in India and paleoanthropological implications
2007The 74,000 year-old supereruption of the Toba volcano, located in northern Sumatra, is recognized as one of Earth’s largest known eruptions and was certainly the largest of the Quaternary period (Smith and Bailey, 1968). It is hypothesized to have led to both global climatic deterioration (Rampino et al., 1988; Rampino and Self, 1992, 1993a) and the ...
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Tephra-fall deposits in the Sleat Group (Torridonian), Isle of Skye, Scotland
Geological Magazine, 2005Tephra-fall deposits in the Late Mesoproterozoic Sleat Group (Torridonian) from Skye, Scotland, are described for the first time. Two individual beds occur within the Loch na Dal Formation which represents sedimentation in a shallow marine environment.
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Geology, 1997
The formation of widespread volcanic ash-fall layers in deep sea sediments was investigated experimentally to examine the settling behavior of tephra (20–180 µm diameter) as it travels from the atmosphere into water. Using a fallout mass flux rate that was constrained by measurements of distal fallout from the 1980 eruption of Mount St.
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The formation of widespread volcanic ash-fall layers in deep sea sediments was investigated experimentally to examine the settling behavior of tephra (20–180 µm diameter) as it travels from the atmosphere into water. Using a fallout mass flux rate that was constrained by measurements of distal fallout from the 1980 eruption of Mount St.
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Uncertainty Quantification of Eruption Source Parameters Estimated From Tephra Fall Deposits
Geophysical Research Letters, 2022Robert Constantinescu +2 more
exaly
Plant Responses in Forests of the Tephra-Fall Zone
2006Joseph A. Antos, Donald B. Zobel
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