PDCD-DAT – a global database of pyroclastic density current deposit field data [PDF]
Journal of Applied VolcanologyPyroclastic density currents represent one of the deadliest hazards posed by active volcanoes. Analysis of their deposits provides valuable insights into their internal dynamics and informs numerical simulations of pyroclastic density currents which ...
Joshua Brown +11 more
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Syn-eruptive, soft-sediment deformation of deposits from dilute pyroclastic density current: triggers from granular shear, dynamic pore pressure, ballistic impacts and shock waves [PDF]
Solid Earth, 2015 Soft-sediment deformation structures can provide valuable information about the conditions of parent flows, the sediment state and the surrounding environment. Here, examples of soft-sediment deformation in deposits of dilute pyroclastic density currents
G. A. Douillet +5 more
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Far-reaching volcaniclastic density current deposits as evidence of explosive marine eruptions [PDF]
Nature CommunicationsUnderwater sediment density currents triggered by marine volcanic eruptions threaten island communities and infrastructure, while their deposits provide archives of past eruptions. Despite their significance, scarce real-time density current observations
Jacob A. Nash +14 more
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Permian Large Igneous Provinces and Their Paleoenvironmental Effects
Geophysical Monograph Series, Page 417-434., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley +7 more sources
Identifying rheological regimes within pyroclastic density currents [PDF]
Nature CommunicationsAbstractPyroclastic density currents (PDCs) are the most lethal of all volcanic hazards. An ongoing challenge is to accurately forecast their run-out distance such that effective mitigation strategies can be implemented. Central to this goal is an understanding of the flow mobility—a quantitative rheological model detailing how the high temperature gas-
Thomas. J. Jones +4 more
openaire +4 more sources
The ash concentration of co-PDC clouds: implications for operational modelling and the aviation hazard [PDF]
npj Natural HazardsPyroclastic density currents (PDCs) can generate co-PDC plumes, which segregate and buoyantly rise from the underlying gravity current. Using the atmospheric-dispersion model NAME we perform a series of co-PDC simulations that vary the particle release ...
Marie Hagenbourger +3 more
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Turbulent particle-gas feedback exacerbates the hazard impacts of pyroclastic density currents [PDF]
Communications Earth & EnvironmentCausing one-third of all volcanic fatalities, pyroclastic density currents create destruction far beyond our current scientific explanation. Opportunities to interrogate the mechanisms behind this hazard have long been desired, but pyroclastic density ...
Daniel H. Uhle +9 more
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Characterising pyroclastic density current grainsize data [PDF]
, 2023 Grainsize data is used across volcanology to aid interpretation of deposit trends and inform transport and depositional process. Collected grainsize data and the way it is presented varies for different processes, for example tephra fall versus ...
Breard, Eric +2 more
core +2 more sources
Frontiers in Earth Science, 2021 Ignimbrites are relatively uncommon on ocean island volcanoes and yet they constitute a significant portion of the stratigraphy of Terceira Island (Azores). The Lajes-Angra Ignimbrite Formation (ca.
Adriano Pimentel +5 more
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New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows [PDF]
Solid Earth, 2012 A granular multiphase model has been used to evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents.
S. Lepore, C. Scarpati
doaj +1 more source