Results 11 to 20 of about 9,726 (207)
Frontiers in Earth Science, 2020 Estimations of the distribution and eruptive volume of large-scale pyroclastic density current (PDCs) and tephra fall deposits are essential for evaluation of the affected area, long-term volcanic hazards assessments, volcanic activity, and geophysical ...
Shinji Takarada, Hideo Hoshizumi
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Tephra fall clean-up in urban environments [PDF]
Journal of Volcanology and Geothermal Research, 2015 Abstract Tephra falls impact urban communities by disrupting transport systems, contaminating and damaging buildings and infrastructures, and are potentially hazardous to human health. Therefore, prompt and effective tephra clean-up measures are an essential component of an urban community's response to tephra fall. This paper reviews case studies of
Hayes, J.L., Wilson, T.M., Magill, C.
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Uncertainty Quantification of Eruption Source Parameters Estimated From Tephra Fall Deposits
Geophysical Research Letters, 2022 AbstractUncertainty quantification (UQ) in eruption source parameters, like tephra volume, plume height, and umbrella cloud radius, is a challenge for volcano scientists because tephra deposits are often sparsely sampled due to burial, erosion, and related factors.
R. Constantinescu +7 more
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The thickness, volume and grainsize of tephra fall deposits
Bulletin of Volcanology, 1989 An improved empirical method for the plotting of field data and the calculation of tephra fall volumes is presented. The widely used “area” plots of ln(thickness) against ln(isopach area) are curved, implying an exponential thinning law. Use of ln(thickness)−(area)1/2 diagrams confirm the exponential dependence of many parameters (e.g.
David M Pyle
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Timber-framed building damage from tephra fall and lahar: 2015 Calbuco eruption, Chile [PDF]
Journal of Volcanology and Geothermal Research, 2019 Abstract Assessing the damage to buildings from volcanic eruptions is an important aspect of volcanic risk assessment and management. However, there is a limited empirical evidence base to draw upon when describing the relation between volcanic hazard intensity and resulting physical damage.
Josh L. Hayes +7 more
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Analysis of the 2020 Taal Volcano tephra fall deposits from crowdsourced information and field data. [PDF]
Bull Volcanol, 2022 Balangue-Tarriela MIR +14 more
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How rainfall influences tephra fall loading — an experimental approach [PDF]
Bulletin of Volcanology, 2021 AbstractThe load a tephra fall deposit applies to an underlying surface is a key factor controlling its potential to damage a wide range of assets including buildings, trees, crops and powerlines. Though it has long been recognised that loading can increase when deposits absorb rainfall, few efforts have been made to quantify likely load increases ...
George T. Williams +3 more
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Creating a digital database of tephra fallout distribution and frequency in Japan
Journal of Applied Volcanology, 2022 Tephra fallout is a potential hazard to livelihoods, critical infrastructure, and health, even in areas that are far from volcanoes. Therefore, it is important to quantitatively evaluate tephra fall hazards for both residents and infrastructure around ...
Shimpei Uesawa +3 more
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Drivers of crop impacts from tephra fallout
Volcanica, 2022 Agriculture is an economic and social pillar for the least developed countries. When these regions host volcanoes that exhibit explosive behaviour, a serious risk for agricultural production arises as crops endure various impacts from tephra fall.
Noa Ligot +2 more
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Laboratory tests to understand tephra sliding behaviour on roofs
Journal of Applied Volcanology, 2023 Following explosive eruptions, loading from tephra fall deposits can lead to roof collapse. However, the load may be reduced significantly by tephra sliding on pitched roofs. We present small-scale laboratory tests to investigate tephra sliding behaviour
Sara Osman +4 more
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