Results 71 to 80 of about 498 (196)

Paroxysmal Explosions, Lava Fountains and Ash Plumes at Etna Volcano: Eruptive Processes and Hazard Implications

Frontiers in Earth Science, 2018
Lava fountains have a major impact on the local population since they cause ash plumes that spread several kilometers above and hundreds of kilometers away from the crater.
Sonia Calvari, Flavio Cannavò, Alessandro Bonaccorso, Letizia Spampinato, Alessandra G. Pellegrino, Alessandra G. Pellegrino   +5 more
doaj   +1 more source

Automatic Analysis of Hydroacoustic Signals Related to the Activity of the Fani Maoré Submarine Volcano

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Due to the properties of sound propagation underwater, including the existence of the SOFAR channel, sounds in the ocean can propagate over large distances with little attenuation. This makes passive acoustics a relevant method for monitoring natural events such as ice calving, earthquakes, and underwater volcanic eruptions.
Pierre‐Yves Raumer, Sara Bazin, Romain Safran, Dorian Cazau, Jean‐Yves Royer   +4 more
wiley   +1 more source

Lunar Mare Lava Flow Dynamics and Emplacement: Predictions of Non-Newtonian Flow Dynamics, Syn- and Post-emplacement Cooling and Volatile Release Patterns, and Vertical and Lateral Flow Structure Development

The Planetary Science Journal
We apply basic principles of magma ascent from deep source regions and its eruption into a low-gravity vacuum environment to develop a theoretical treatment of the fluid dynamics and thermodynamics of mare basalt lava flow emplacement and evolution on ...
Lionel Wilson, James W. Head
doaj   +1 more source

Magma Ascent and Accumulation Drives Surface Deformation and Ring Fault Seismicity Preceding the 2024 Eruption of Fernandina Volcano, Galápagos Islands

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract At caldera volcanoes, ring faults can play a key role in controlling the dynamics of unrest and patterns of associated surface deformation and seismicity. Here we show that the March 2024 eruption of Fernandina volcano was preceded by a 2.5‐year episode of magma accumulation, driving surface uplift and asymmetric seismicity on a ring fault ...
Andrew F. Bell, Susanna K. Ebmeier, Stephen Hernandez, Eliot Eaton, Xuesong Zhang, Peter LaFemina, Christopher Bean, Mario Ruiz   +7 more
wiley   +1 more source

A Hidden Eruption: The 21 May 2023 Paroxysm of the Etna Volcano (Italy)

Remote Sensing
On 21 May 2023, a hidden eruption occurred at the Southeast Crater (SEC) of Etna (Italy); indeed, bad weather prevented its direct and remote observation.
Emanuela De Beni, Cristina Proietti, Simona Scollo, Massimo Cantarero, Luigi Mereu, Francesco Romeo, Laura Pioli, Mariangela Sciotto, Salvatore Alparone   +8 more
doaj   +1 more source

Rainfall‐triggered landslides from the January 2023 1‐in‐200 year storm at Maungakiekie/One Tree Hill, Auckland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 68, Issue 5, Page 1049-1063, December 2025.
ABSTRACT We describe engineering geological characteristics and failure mechanisms of shallow soil landslides activated on Maungakiekie/One Tree Hill in central Auckland, New Zealand on 27 January 2023. The hill is a scoria cone in the young Auckland Volcanic Field (AVF), and formed ∼60 ka BP.
Gabriel Abazu, Martin S. Brook, Brent Druskovich, Marc‐Andre Brideau, Bruce W. Hayward   +4 more
wiley   +1 more source

Large‐Scale Topographic Changes at Erupting Volcanoes Measured by the TanDEM‐X Digital Change Map

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract Volcanic eruptions cause large‐scale topographic changes, through the emplacement of lava flows and lava domes, the formation of craters and calderas, and thick ash and pyroclastic deposits. Here we analyze the TanDEM‐X Digital Change Map (DCM), which compares the DEM produced during 2010–2015 with satellite acquisitions collected in 2016–2022.
Rebecca Edwards, Juliet Biggs
wiley   +1 more source

Felsic Magmatism on Venus Generated by Crustal Recycling and Melting

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The observation of low viscosity lava flows and shield volcanoes on radar images, combined with X‐ray fluorescence analyses performed by Soviet landers, strongly suggests that Venus's crust is primarily basaltic. However, near‐infrared emissivity data from the Galileo and Venus Express missions indicate that crustal plateaus may be ...
Max Collinet, Julia Maia, Ana‐Catalina Plesa, Stephan Klemme, Mark Wieczorek   +4 more
wiley   +1 more source

LAVA FOUNTAIN MULTIDISCIPLINARY APPROACH

, 2011
A multidisciplinary approach integrating a wide data set ranging from bulk rock compositions of the erupted products to volcanic tremor, long-period events, and tilt and gravity signals is used to investigate the source depth and magma dynamics of the 10 May 2008 lava fountain at Southeast crater (SEC) of Mount Etna. The investigation was undertaken in
Alessandro Bonaccorso, L. Miraglia, Salvatore Gambino, Antonio Pistorio, Andrea Cannata, Rosa Anna Corsaro, G. Di Grazia, Filippo Greco   +7 more
openaire   +1 more source

The 23–24 March 2021 lava fountain at Mt Etna, Italy

Bulletin of Volcanology
AbstractIn 2021, more than 50 paroxysmal episodes occurred at the South-East Crater (SEC) of Mt Etna, Italy. The 23–24 March lava fountain was one of the longest episodes and began with weak Strombolian explosions, gradually transitioning to lava fountaining.
Daniele Andronico, Claudia D’Oriano, Federica Pardini, Alessandro La Spina, Mattia de’ Michieli Vitturi, Pietro Bonfanti, Antonino Cristaldi, Ferruccio Ferrari   +7 more
openaire   +1 more source