Results 81 to 90 of about 1,257 (218)

Rift Development, Tectonic Forcings, and Magmatic Feedbacks at Santorini and Kolumbo Volcanoes Constrained by Scientific Drilling and Core‐Seismic Integration

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Volcanism in continental rifts, rifted volcanic arcs, and back‐arc basins is fundamentally coupled with crustal extension. However, the precise geometry and timing of the fault systems that facilitate magma transport and accommodate extension remain poorly constrained.
Jonas Preine, Christian Hübscher, Tim Druitt, Matthias Hartge, Abigail Metcalfe, Steffen Kutterolf, Katharina Pank, Jens Karstens, Paraskevi Nomikou, Masako Tominaga, Emilie Hooft, Beck Hufstetler, Kaisa Autumn, Gareth Crutchley, Maria B. Jover, Christian Berndt, Thomas A. Ronge, IODP Expedition 398 Scientists   +17 more
wiley   +1 more source

Processes and deposits of submarine sediment density flows within the Moroccan turbidite system, offshore NW Africa [PDF]

, 2012
Submarine sediment density flows are a major process for transporting sediment from the continental shelf to the deep-ocean. Understanding submarine flow dynamics relies upon analysis of their deposits (beds) because monitoring them directly is difficult.
Stevenson, Christopher John
core  

Generation of a debris avalanche and violent pyroclastic density current on 26 December 1997 (Boxing Day) at the Soufriere Hills Volcano, Montserrat

, 2002
Growth of an andesitic lava dome at Soufriere Hills Volcano, Montserrat, beginning in November 1995, caused instability of a hydrothermally altered flank of the volcano.
Ritchie, LJ, Calder, E. S., Sparks, R. S., Ritchie, L., Young, S. R., Barclay, J, Norton, GE, Norton, G. E., Voight, B., Woods, A. W., Voight, B, Calder, ES, Luckett, R., Herd, R. A., Barclay, J., Sparks, RSJ, Woods, AW, Herd, RA, Luckett, R   +18 more
core   +1 more source

Dataset and Software: Heat Transfer in Pyroclastic Density Current - Ice Interactions: Insights from Experimental and Numerical Simulations

, 2023
This repository contains experiment data and executable MATLAB codes for the research article 'Heat Transfer in Pyroclastic Density Current - Ice Interactions: Insights from Experimental and Numerical Simulations'.
Seward, Anya, Vale, Amelia B., Jenkins, Luke T., Phillips, Jeremy. C., Seward, Anya., Rust, Alison., Phillips, Jeremy C., Hogg, Andrew J., Jenkins, Luke. T., Rust, Alison, Kilgour, Geoff, Vale, Amelia. B., Kilgour, Geoff., Hogg, Andrew. J.   +13 more
core   +1 more source

Submarine deposits from pumiceous pyroclastic density currents traveling over water: An outstanding example from offshore Montserrat (IODP 340) [PDF]

, 2017
Pyroclastic density currents have been observed to both enter the sea, and to travel over water for tens of kilometers. Here, we identified a 1.2-m-thick, stratified pumice lapilli-ash cored at Site U1396 offshore Montserrat (Integrated Ocean Drilling ...
Jutzeler, M., Le Friant, A., Ishizuka, O., Manga, M., Proussevitch, A., White, J.D.L., Talling, P.J.   +6 more
core   +2 more sources

The magnitude and impact of the Youngest Toba Tuff super-eruption

Frontiers in Earth Science, 2014
Super-eruptions, orders of magnitude larger than eruptions experienced in historic times, have devastated wide areas by pyroclastic flows, covered continent-size areas by ash fallout, and injected large quantities of aerosols into the stratosphere ...
Antonio eCosta, Victoria eSmith, Giovanni eMacedonio, Naomi eMatthews   +3 more
doaj   +1 more source

First Direct Observations of Internal Flow Structures in a Powder Snow Avalanche: Turbulence, Instability and Particle Distribution

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract Powder snow avalanches are highly dynamic, multiphase gravity‐driven flows typically composed of a dense basal layer overlain by airborne layers in which snow particles are suspended within a turbulent air phase. Despite extensive work on related systems such as pyroclastic density currents and turbidity currents, all gravity current studies ...
I. Calic, F. Coletti, B. Sovilla
wiley   +1 more source

CHAPTER 4.4 Pyroclastic Density Currents

Pyroclastic density currents (PDCs) are hot mixtures of gases and volcanic rock of diverse size, nature, or density, capable of flowing over long distances at velocities of tens to hundreds of kilometers per hour. They typically originate from the gravitational collapse of explosive eruption columns, lava domes or lava-flow fronts, unstable upper-flank
Sylvain Charbonnier, Eric Breard, Samantha Engwell, Olivier Roche, Walter Baez, Marina Belousova, Briitany Brand, Geoffrey Lerner, Sarah Ogburn   +8 more
openaire   +1 more source

Syn-Depositional deformation of a substrate produced by the shear force of a pyroclastic density current: An example from the Cimino Ignimbrite, Northern Lazio, Italia

, 2006
Substrate deformation by pyroclastic density currents is very sparsely described in the literature. The rare occurrence of syn-depositional substrate deformation suggests that special circumstances are required to transmit shear from the base of a ...
CAS R. A. F., LA BERGE R. D, GIORDANO, Guido   +2 more
core  

Topographic controls on pyroclastic density current hazard, Aluto volcano (Ethiopia): TITAN2D simulations and zGP and data processing scripts

, 2023
<p>This collection of data and Matlab (MATLAB, 2022) scripts were used to compute all the results and figures shown in the submitted version of the manuscript: "Topographic controls on pyroclastic density current hazard at Aluto volcano (Ethiopia ...
Tierz, Pablo
core   +1 more source