Results 61 to 70 of about 331 (165)

Seismic Tomography of a Newborn Volcano

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract On 19 September 2021, in La Palma, Canary Islands (Spain), a new volcano, later named Tajogaite, erupted. We determined the shallow seismic tomography model of Tajogaite Volcano, including the 3D distributions of Vp, Vs, and Vp/Vs. The tomography of the volcanic edifice has been performed using a combination of a three‐component amplitude ...
Sergio Gammaldi, Iván Cabrera‐Pérez, Ivan Koulakov, Luca D’Auria, Graziella Barberi, Rubén García‐Hernández, David Martínez van Dorth, Víctor Ortega‐Ramos, Janire Prudencio, Monika Przeor, Jesús M. Ibáñez   +10 more
wiley   +1 more source

The ash-fall hazard from a Plinian eruption at Colima Volcano, Mexico

Annals of Geophysics, 2010
The historical eruptive activity at Colima Volcano has been characterized by Strombolian and Merapi type eruptions and Vulcanian explosions associated with dome growth, which have ended in a Plinian eruption about every 100 years.
Rita Fonseca
doaj   +1 more source

Slow Ascent of Unusually Hot Intermediate Magmas Triggering Strombolian to Sub-Plinian Eruptions

Journal of Petrology, 2020
AbstractTo assess whether magma ascent rates control the style of volcanic eruption, we have studied the petrography, geochemistry and size distribution of microlites of plagioclase and pyroxene from historical eruptions from Tongariro, Ruapehu and Ngauruhoe volcanoes located in the southern Taupo Volcanic Zone, New Zealand.
C Lormand, G F Zellmer, G N Kilgour, K Németh, A S Palmer, N Sakamoto, H Yurimoto, T Kuritani, Y Iizuka, A Moebis   +9 more
openaire   +1 more source

Controls on Water‐Magma Interactions at Hydraulically‐Charged Volcanic Islands

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract The interaction of rising magma with groundwater can produce phreatomagmatic explosions, which, given their enhanced explosivity and unpredictability, increase the hazard potential of volcanic eruptions. To investigate the link between groundwater occurrence and phreatomagmatism, we compare the volcanic record of Flores Island (Azores) with ...
M. Andrade, A. Hernández, A. Pimentel, J. V. Cruz, A. M. Ramos, P. Ludwig, J. C. Schindlbeck‐Belo, R. S. Ramalho   +7 more
wiley   +1 more source

Fragmentation Processes During Strombolian Explosions Revealed Using Particle Size Distribution Mapping

Frontiers in Earth Science, 2020
Fragmentation dynamics can be described by the size distribution of the fragments generated during an explosion. We approach the problem of magma fragmentation during a Strombolian explosion using the grain size distribution (GSD) of a ballistically ...
Livia Colo’, Maurizio Ripepe, Lucia Gurioli, Andrew J. L. Harris   +3 more
doaj   +1 more source

The “Analogs for VENus' GEologically Recent Surfaces” (AVENGERS) Initiative: Using Terrestrial Analogs to Study Recent Volcano‐Tectonic Activity on Venus and Inform the Characterization of Terrestrial Exoplanets

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract Several missions to Venus have recently been selected for launch, opening a new era for the exploration of the planet. A key question these missions seek to address is whether Venus is geologically active today. Detecting active volcanism on Venus would contribute to a better understanding of volcanic and atmospheric processes on Earth.
P. D’Incecco, J. Filiberto, J. B. Garvin, G. N. Arney, S. A. Getty, E. Kohler, L. M. Zelenyi, L. V. Zasova, O. I. Korablev, M. A. Ivanov, J. W. Head, D. A. Gorinov, S. Bhattacharya, S. S. Bhiravarasu, D. Putrevu, I. López, R. Ghail, P. Mason, J. Brossier, C. Monaco, S. Branca, R. A. Corsaro, D. Trang, J. R. Crandall, N. Mari, M. Blackett, G. Komatsu, A. Kosenkova, I. Flynn, S. Aveni, N. Lang, B. J. Thomson, I. Pagano, S. Cassisi, G. Eggers, R. E. Ernst, H. El Bilali, T. Kremic, J. Lustig‐Yaeger, N. Izenberg, L. Bruzzone, M. El Yazidi, E. Ferroni, D. Coero Borga, C. Badia, S. Parisini, G. Fiasconaro, S. Cussini, M. Dolci, E. Brocato, G. Gallardo i Peres, N. Davidova, S. Kane, C. Ostberg, V. Ortega‐Ramos, G. Di Achille   +55 more
wiley   +1 more source

Pumice cone eruptions at Aluto volcano, Ethiopia

Volcanica
Pumice cones are volcanic landforms that exist worldwide, but whose eruption has never been observed. Interpretations of these eruptions vary significantly in style, intensity, and magnitude, pertinent for volcanic hazard assessment.
Ben Clarke, Eliza S. Calder, Karen Fontijn, Firawalin Desalegn, Pablo Tierz, Gezahegn Yirgu   +5 more
doaj   +1 more source

Characterizing Spatiotemporal Ground Deformation at Whakaari (White Island) Volcano, New Zealand From 2014 to 2024 Using InSAR Time‐Series Analysis

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract Whakaari (White Island) volcano is the most active volcano in New Zealand with a dynamic hydrothermal system. The volcano has had four eruptive periods since 2014. In this study, our aim is to understand the pre‐and post‐eruption deformation processes occurring at Whakaari using interferometric synthetic aperture radar (InSAR).
Shreya Kanakiya, Stella Essenmacher, Arnold Fernandes   +2 more
wiley   +1 more source

Volcanic precursors in light of eruption mechanisms at Vesuvius

Annals of Geophysics, 2013
Vesuvius entered a quiescent stage after the eruption of March-April 1944. The eruption was not much different or larger than other before, like for example the one of 1906, but it occurred at the end of a long period during which it was observed a ...
Roberto Scandone, Lisetta Giacomelli
doaj   +1 more source

Mid‐Ocean Ridge (MOR) Ash Dispersal on Axial Seamount, Juan de Fuca Ridge

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract Rare eruption of primitive normal mid‐ocean ridge basalt (N‐MORB) magma (∼9.5 wt% MgO) on the summit of Axial Seamount generated abundant ash that was dispersed for several km. The unique geochemical signature of this ash deposit is distinct from otherwise typical MORB with more evolved compositions. As such, it is a key marker bed that can be
Ryan A. Portner, Guangyu Xu, Arran P. Murch, David A. Clague, Brian M. Dreyer, Jennifer B. Paduan   +5 more
wiley   +1 more source