Results 51 to 60 of about 455 (195)

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

Lahars on Atlasov Island in September-October 2022 (Kuril Islands)

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022
The article provides information about nival-volcanogenic, possibly glacial-volcanogenic, mudflows (lahars) on three streams on the south side of Atlasov Island (Kuril Islands, Russia). The island is an active stratovolcano Alaid, 2339 m asl high.
Kotenko T.A.
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

Dynamic feeder dyke systems in basaltic volcanoes: the exceptional example of the 1809 Etna eruption (Italy)

Frontiers in Earth Science, 2014
In this paper, we describe the 1809 eruption of Mt. Etna, Italy, which represents one historical and rare case in which it is possible to closely observe the internal structure of the feeder system.
Nobuo eGeshi, Marco eNeri
doaj   +1 more source

Modelling Paroxysmal and Mild-Strombolian Eruptive Plumes at Stromboli and Mt. Etna on 28 August 2019

Remote Sensing, 2023
Volcanic eruptions pose a major natural hazard influencing the environment, climate and human beings at different temporal and spatial scales. Nevertheless, several volcanoes worldwide are poorly monitored and assessing the impact of their eruptions remains, in some cases, challenging.
Giuseppe Castorina, Agostino Semprebello, Alessandro Gattuso, Giuseppe Salerno, Pasquale Sellitto, Francesco Italiano, Umberto Rizza   +6 more
openaire   +3 more sources

Lava Lake Spattering Drives Seismic Tremor During the Geldingadalir 2021 Eruption, Iceland

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.
Abstract Volcanic eruptions generate a continuous ground motion that is commonly referred to as tremor. Although tremor is used worldwide for real‐time monitoring of volcanoes, the mechanisms involved are generally poorly understood. Here, we study the episodic effusion during 2021 Geldingadalir eruption. We use photogrammetric data and videos acquired
Alea Joachim, Eva P. S. Eibl, Daniel Müller, Thomas R. Walter, Tom Winder, Nicholas Rawlinson   +5 more
wiley   +1 more source

Mechanisms of Ash Generation at Basaltic Volcanoes: The Case of Mount Etna, Italy

Frontiers in Earth Science, 2019
Basaltic volcanism is the most widespread volcanic activity on Earth and planetary bodies. On Earth, eruptions can impact global and regional climate, and threaten populations living in their shadow, through a combination of ash, gas and lava.
Margherita Polacci, Daniele Andronico, Mattia de’ Michieli Vitturi, Jacopo Taddeucci, Antonio Cristaldi   +4 more
doaj   +1 more source

On the Complex Topography of Marine Volcanoes and Its Control on the Spatial and Magnitude Distribution of Surface Displacement

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Marine volcanoes exhibit significant topographic relief, as they extend from deep below sea level to thousands of meters above. These volcanoes often have complex, asymmetric topographies due to the submersion of their flanks, yet deformation models often approximate this topographic surface as flat and overlook its effect in modeling ...
Megan Campbell, Séverine Furst, Henriette Sudhaus, Morelia Urlaub   +3 more
wiley   +1 more source

Explosive Paroxysmal Events at Etna Volcano of Different Magnitude and Intensity Explored through a Multidisciplinary Monitoring System

Remote Sensing, 2022
Between 13 December 2020 and 21 February 2022, Etna volcano produced a sequence of 66 paroxysmal explosive eruptions, with Strombolian activity at the summit craters climaxing in lava fountains and eruption columns extending several kilometers above the ...
Sonia Calvari, Emilio Biale, Alessandro Bonaccorso, Andrea Cannata, Luigi Carleo, Gilda Currenti, Giuseppe Di Grazia, Gaetana Ganci, Adriana Iozzia, Emilio Pecora, Michele Prestifilippo, Mariangela Sciotto, Simona Scollo   +12 more
doaj   +1 more source

Coupled Paleomagnetism and 40Ar/39Ar Dating of Latera Ignimbrites (Vulsini Volcanic District, Italy) Unravel Processes Associated to Piston‐Collapse Calderas

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Correlation of ignimbrite units at polygenic calderas is mandatory for the reconstruction of caldera‐forming events and proper identification of their eruption dynamics. However, ignimbrites erupted at different times from the same caldera can display similarities in composition and lithology that can hamper proper correlation of outcrops ...
Arianna Beatrice Malaguti, Stéphane Scaillet, Marco Pistolesi, Mauro Rosi, Fabio Speranza, Alberto Renzulli   +5 more
wiley   +1 more source