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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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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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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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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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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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Distal Pyroclastic Current Deposits of the 79 AD Vesuvius Eruption on the Mountains Adjacent to the Campanian Plain
Literature data show that the two most widespread Vesuvius 79 AD pyroclastic density currents (PDCs) have been traced over a large area around the...
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The influence of gas pore pressure in dense granular flows: numerical simulations versus experiments and implications for pyroclastic density currents
We investigate the influence of gas pore pressure in granular flows through numerical simulations on horizontal and low-angle inclined surfaces. We...
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Assessing the Pyroclastic Density Current Hazards at Merapi: From Field Data to Numerical Simulations and Hazard Maps
Merapi is considered as the most active and the most frequently eruptive volcano in Indonesia and is responsible for more than 5200 casualties since...
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Multiphase flow behaviour and hazard prediction of pyroclastic density currents
Pyroclastic density currents (PDCs) are dangerous multiphase flows originating from volcanic eruptions. PDCs cause more than a third of volcanic...
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Estimating the Physico-Mechanical Properties of Pyroclastic Rocks from Electrical Resistivity
Predicting the properties of rocks is aided by the use of indirect methods such as electrical resistivity. This article investigates the...
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The 2019 Explosive Eruption of Raikoke Volcanic Island, Kuriles: Pyroclastic Deposits and Their Impact on the Relief and Ecosystems
AbstractA short-lived but violent explosive eruption occurred on the small volcanic island Raikoke in June 2019 (central Kuril Islands). The...
