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Subaerial Pyroclastic Density Currents (Pyroclastic Flows and Surges)
Explosive eruptions can produce a spectrum of pyroclastic density currents (pdcs) which we describe in this chapter. Pdcs are potentially the most...
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Turbulent particle-gas feedback exacerbates the hazard impacts of pyroclastic density currents
Causing one-third of all volcanic fatalities, pyroclastic density currents create destruction far beyond our current scientific explanation....
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Identifying rheological regimes within pyroclastic density currents
Pyroclastic density currents (PDCs) are the most lethal of all volcanic hazards. An ongoing challenge is to accurately forecast their run-out...
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Large-scale volcanic deposit fluidization by dilute pyroclastic density currents
There is increasing evidence that fine-grained deposits of pyroclastic density currents can be remobilized on a large scale, resulting in...
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The fragmentation-induced fluidisation of pyroclastic density currents
Pyroclastic density currents (PDCs) are the most lethal volcanic process on Earth. Forecasting their inundation area is essential to mitigate their...
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Different physics but similar dependence of runout distance with discharge rate: the duality of pyroclastic density currents
We address emplacement mechanisms of pyroclastic density currents (PDCs) through relationships between their runout distance and mass discharge rate...
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Subaqueous Flows of Pyroclastic Debris and Their Deposits
In this chapter, we consider the intriguing and provocative topic of what happens when pyroclastic density currents enter the sea or large lakes from...
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PyroCLAST: a new experimental framework to investigate overspilling of channelized, concentrated pyroclastic currents
Small-volume concentrated pyroclastic currents (CPCs) are often responsible for unpredicted and deadly overspills from channel confines when they...
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Generation of deposit-derived pyroclastic density currents by repeated crater rim failures at Stromboli Volcano (Italy)
The gravitational instability of hot material deposited during eruptive activity can lead to the formation of glowing avalanches, commonly known as...
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Cohesional behaviours in pyroclastic material and the implications for deposit architecture
Pyroclastic density currents (PDCs) are hazardous, multiphase currents of heterogeneous volcanic material and gas. Moisture (as liquid or gas) can...
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Inverting sediment bedforms for evaluating the hazard of dilute pyroclastic density currents in the field
Pyroclastic density currents are ground hugging gas-particle flows associated to explosive volcanic eruptions and moving down a volcano's slope,...
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Explosive Eruption Styles, Columns, and Pyroclastic Fallout Deposits
In this chapter, we consider the range of volcanic explosive eruption styles, from the smallest and least intense to the largest and most intense...
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Tsunamis generated by pyroclastic flows: experimental insights into the effect of the bulk flow density
For a better assessment of hazards related to tsunamis triggered by pyroclastic flows entering water, it is crucial to know and quantify the...
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Magnetic fabrics of rhyolite ignimbrites reveal complex emplacement dynamics of pyroclastic density currents, an example from the Altenberg–Teplice Caldera, Bohemian Massif
The Anisotropy of Magnetic Susceptibility (AMS) is commonly used to infer the flow dynamics, source areas, and post-emplacement processes of...
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Advances in our understanding of pyroclastic current behavior from the 1980 eruption sequence of Mount St. Helens volcano (Washington), USA
This review summarizes what the volcanology community has learned thus far from studying the deposits of pyroclastic currents (PCs) from the 1980...
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Destructiveness of pyroclastic surges controlled by turbulent fluctuations
Pyroclastic surges are lethal hazards from volcanoes that exhibit enormous destructiveness through dynamic pressures of 10 0 –10 2 kPa inside flows...
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The mysterious grooves of Volcán Bárcena: a review of the role of streamwise counter-rotating vortices during erosion by dilute pyroclastic density currents
Although erosion during high-energy passage of a pyroclastic density current (PDC) causes great damage, analyses of the effects of such erosion are...
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Dynamics of large pyroclastic currents inferred by the internal architecture of the Campanian Ignimbrite
Large ignimbrites are the product of devastating explosive eruptions that have repeatedly impacted climate and life on global scale. The assemblage...
