Results 41 to 50 of about 2,889,255 (157)

Volcanoclastic density currents explain far-reaching and diverse seafloor impacts of the 2022 Hunga Tonga Hunga Ha’apai eruption

, 2023
Figures, videos, and supplemental tables included in manuscript Pyroclastic density currents explain far-reaching and diverse seafloor impacts of the 2022 Hunga Tonga Hunga Ha'apai ...
Sarah Seabrook (14290995), Richard Wysoczanski (5805989), Linn Hoffmann (9691357), Ashley Rowden (4341916), James Hunt (3151476), Michael Clare (1927288), Sally J. Watson (9401252), Michael Williams (47333), Emily Lane (10319696), Isobel A. Yeo (6732986), Evelyn Armstrong (2629552), Kevin MACKAY (12804365), Taaniela Kula (11858234), Malcolm Clark (397697)   +13 more
core   +1 more source

Tephra fallout and pyroclastic density currents hazard maps for Ecuadorian volcanoes: examples from Cotopaxi, Guagua Pichincha, Tungurahua and Sangay volcanoes

, 2022
Introduction Brief overview on studied volcanoes Numerical modelling Tephra fallout (TF) Pyroclastic Density Currents (PDC) Uncertainty quantification procedure Hazard maps Cotopaxi/Guagua Pichincha (TF) Tungurahua (TF/PDC) Sangay (expert ...
Bernard, Benjamin, Azzaoui, Nourddine, Hidalgo, Silvana, Tadini, Alessandro, Bevilacqua, Andrea, Pardini, Federica, Roche, Olivier, Samaniego, Pablo, Aravena, Álvaro, de' Michieli Vitturi, Mattia, Guillin, Arnaud, Gouhier, Mathieu   +11 more
core   +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

Late Pliocene–Quaternary Arc Volcanism at the Southern Limit of the Hikurangi Subduction Zone: Revised Chronology of the Taranaki Peninsula, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Igneous centres across the Taranaki Peninsula represent the southwestern limit of arc volcanism associated with the Tonga–Kermadec–Hikurangi subduction system. Taranaki Maunga, the youngest and largest of three andesitic stratovolcanoes, dominates the geomorphology of the Taranaki Peninsula along with the eroded remnants of the Kaitake and Pouakai ...
G. P. Thrasher, M. W. Sagar, H. Seebeck, G. P. D. Viskovic   +3 more
wiley   +1 more source

PyBox: a Python tool for simulating the kinematics of Pyroclastic density currents with the box-model approach, Reference and User's Guide

, 2019
The technical report describes the physical principles, numerical method and implementation into a Python code of an integral (box) model to simulate the kinematics of pyroclastic density currents (PDCs) and the PDC invasion maps over a rugged ...
Biagioli, Giovanni, Giovanni Biagioli, Andrea Bevilacqua, Esposti Ongaro, Tomaso, Bevilacqua, Andrea, Mattia de' Michieli Vitturi, de' Michieli Vitturi, Mattia, Tomaso Esposti Ongaro   +7 more
core   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

A Geophysical Crustal Model of Central Italy for Geoneutrino Predictions in Borexino

Earth and Space Science, Volume 13, Issue 11, November 2026.
Abstract Predicting the geoneutrino signal at underground detectors requires a local crustal reference whose precision matches the experimental uncertainty. The current Borexino reference is 15 years old and deterministic. We replace it with GUESS, a probabilistic 3‐D model of the Gran Sasso region, built by Bayesian inversion of multi‐source ...
L. Rossi, M. Capponi, P. Conti, N. I. Elek, A. Ermini, K. G. C. Raptis, M. Reguzzoni, V. Strati, M. M. Tiberti, F. E. Maesano, R. Maffucci, M. Buttinelli, M. Abdelkader, M. Albèri, A. Albertella, G. Hasnain, F. Mantovani, L. Pagano, S. Ramouz, R. Salvini, D. Sampietro, P. S. Dinani   +21 more
wiley   +1 more source

Preservation of Isolated Vesicles in Submarine Pumice and Implications for Submarine Slope Stability

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Pumice clasts from submarine eruptions contain abundant isolated vesicles that are completely encased in glass. As erupted clasts cool, gas inside isolated vesicles contracts, leading to low pressures inside those vesicles. Despite low pressures, isolated vesicles can be preserved in submarine pumice deposits to water depths of approximately 1–
M. Manga
wiley   +1 more source

Turbulent particle-gas feedback exacerbates the hazard impacts of pyroclastic density currents (Dataset)

<p>This repository contains data presented in the article “Turbulent particle-gas feedback exacerbates the hazard impacts of pyroclastic density currents” by D.H. Uhle, G. Lube, E.C.P. Breard, E. Meiburg, J. Dufek, J. Ardo, J.R.
Uhle, Daniel
core   +1 more source

Effects of Multiphase Turbulence on the Flow and Hazard Behavior of Dilute Pyroclastic Density Currents A

<p>Appendix A: General<br>All codes run in a free Python environment. To ensure reproducibility and avoid issues with versions of Python and single packages, Appendix A contains the Anaconda environment ‘Anaconda_Environment.yaml’.
Uhle, Daniel Holger
core   +1 more source