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The Minoan Thera eruption predates Pharaoh Ahmose: Radiocarbon dating of Egyptian 17th to early 18th Dynasty museum objects. [PDF]
Bruins HJ, van der Plicht J.
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Plinian and co-ignimbrite tephra fall from the
Bulletin of Volcanology, 1989A study of pyroclastic deposits from the 1815 Tambora eruption reveals two distinct phases of activity, i.e., four initial tephra falls followed by generation of pyroclastic flows and the production of major co-ignimbrite ash fall. The first explosive event produced minor ash fall from phreatomagmatic explosions (F-1 layer).
Sigurdsson, Haraldur, Carey, Steven
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Total grain-size distribution and volume of tephra-fall deposits
Bulletin of Volcanology, 2005On 17 June 1996, Ruapehu volcano, New Zealand, produced a sustained andesitic sub-Plinian eruption, which generated a narrow tephra-fall deposit extending more than 200 km from the volcano. The extremely detailed data set from this eruption allowed methods for the determination of total grain-size distribution and volume of tephra-fall deposits to be ...
Bonadonna, Costanza, Houghton, B.F.
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Bulletin of Volcanology, 1992
A model for sedimentation from turbulent suspensions predicts that tephra concentration decreases exponentially with time in an ascending volcanic column and in the overlying umbrella cloud. For grain-size distributions typical of plinian eruptions application of the model predicts for thickness variations in good agreement with the exponential ...
Sparks, RSJ +4 more
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A model for sedimentation from turbulent suspensions predicts that tephra concentration decreases exponentially with time in an ascending volcanic column and in the overlying umbrella cloud. For grain-size distributions typical of plinian eruptions application of the model predicts for thickness variations in good agreement with the exponential ...
Sparks, RSJ +4 more
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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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Probabilistic tephra fall simulation for the Auckland Region, New Zealand
Journal of Volcanology and Geothermal Research, 2006Abstract The Auckland Region, New Zealand is at significant risk from tephra falls originating both from the local Auckland Volcanic Field (AVF) and several distant, large-volume centres. We use geological data and observations of historical eruptions to develop a catalogue of simulated tephra dispersal patterns for the Auckland Region, using the ...
C.R. Magill +3 more
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A model for the numerical simulation of tephra fall deposits
Journal of Volcanology and Geothermal Research, 2005Abstract A simple semianalytical model to simulate ash dispersion and deposition produced by sustained Plinian and sub-Plinian eruption columns based on the 2D advection–dispersion equation was applied. The eruption column acts as a vertical line source with a given mass distribution and neglects the complex dynamics within the eruption column. Thus,
T. Pfeiffer, A. Costa, G. Macedonio
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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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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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Agricultural vulnerability to tephra fall impacts.
2015Understanding agricultural impact from tephra hazards and their causal mechanisms is vital when developing mitigation and recovery strategies. It is well documented that tephra can impact agricultural systems. However, forecasting likely impacts has been challenging and focused on creating generalised models where impacts typically increase with tephra
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