Results 71 to 80 of about 455 (195)

Lava Rheological Evolution and Flow Emplacement During the Deep Submarine Fani Maoré Eruption (Mayotte)

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract The 2018–2020 lava flow field that built the submarine Fani Maoré volcano (Mayotte, north Mozambique Channel) at a water depth of 3,300 m was extensively sampled. We use the petrological analysis of samples collected at high spatial and temporal resolution to provide information on the textural evolution of the submarine lavas and its impacts ...
Pauline Verdurme, Oryaëlle Chevrel, Etienne Médard, Lucia Gurioli, Carole Berthod, Karoline Brückel, Jean‐Christophe Komorowski, Patrick Bachèlery   +7 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

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

A combined geophysical and lithological study on eruptive history and Quaternary lacustrine stratigraphy of a maar in Leizhou Peninsula, China

Journal of Palaeogeography, 2021
As the second common type of volcanic vent on Earth, maar-diatreme volcanoes and their post-eruptive lacustrine sediments are a main focus of volcanology, palaeolimnology, palaeoclimatology and palaeontology.
Cong Chen, Zhuo Zheng, Li-Feng Zeng, Fan Xiao, Li-Ping Tian, Kang-You Huang   +5 more
doaj   +1 more source

Effusion Rate Trends at Piton de la Fournaise: A Review of 24 Years of Space‐Based Thermal Observation

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract We combined thermal satellite imagery from Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) instruments to reconstruct the effusion rate trends in terms of Time Averaged Discharge Rate (TADR) of 37 eruptions (2000–2023) at Piton de la Fournaise (La Réunion, France).
Adele Campus, Nicolas Villeneuve, Oryaëlle Chevrel, Aline Peltier, Andrea Di Muro, Diego Coppola   +5 more
wiley   +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   +2 more sources

Deformation and Gravitational Instability at Anak Krakatau (Sunda Strait, Indonesia): Insights From Direct Shear Experiments and Finite‐Element Models

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.
Abstract Volcanic edifices are known to be unstable and their collapses have been observed several times in history. A collapse of island or coastal volcanoes is especially hazardous for the population living on regional shorelines due to the generation of destructive tsunami waves.
F. Stoepke, M. J. Ikari, A. Hampel, K. Meredew, S. Watt, M. Cassidy, M. Urlaub   +6 more
wiley   +1 more source

Tephra From the 3 March 2015 Sustained Column Related to Explosive Lava Fountain Activity at Volcán Villarrica (Chile)

Frontiers in Earth Science, 2018
Exceptionally intense lava fountains at open conduit volcanoes are infrequent, hazardous and little-warned events. Studying their tephra falls may reveal conduit dynamics, eruption source parameters and fragmentation mechanisms.
Jorge E. Romero, Franco Vera, Margherita Polacci, Daniele Morgavi, Fabio Arzilli, Mohammad Ayaz Alam, Jorge E. Bustillos, Alicia Guevara, Jeffrey B. Johnson, José L. Palma, Mike Burton, Evelyn Cuenca, Werner Keller   +12 more
doaj   +1 more source

Seed Bank and Ashfalls: The Ecological Resetting Effect of the Recent Tajogaite Volcano Eruption in the Canary Pine Forest (La Palma, Spain)

Journal of Vegetation Science, Volume 36, Issue 3, May/June 2025.
This groundbreaking study explores the impact of volcanic tephra thickness on seed bank viability and seedling emergence. By simulations of ash depth from the Tajogaite eruption (La Palma, Canary Islands), we demonstrated that tephra layers exceeding 5 cm significantly inhibit germination of endemic pine forest species, suggesting profound post ...
Félix Manuel Medina, María Guerrero‐Campos, Guillermo Hernández Martín, Thomas Boulesteix, Frank Weiser, Anna Walentowitz, Anke Jentsch, Carl Beierkuhnlein, Patricia Marrero, Christopher Shatto, Víctor Chano, Manuel Nogales   +11 more
wiley   +1 more source

Weak Crust Owing Past Magmatic Intrusions Beneath Campi Flegrei Identified: The Engine for Bradyseismic Movements?

AGU Advances, Volume 6, Issue 2, April 2025.
Abstract Calderas often experience extended periods of unrest that are challenging to relate to a magmatic or hydrothermal origin, making it crucial to assemble a clear picture of these dynamics. Since 2005, Campi Flegrei caldera (Italy) has experienced accelerating ground uplift, seismicity rates, and degassing.
Gianmarco Buono, Francesco Maccaferri, Lucia Pappalardo, Anna Tramelli, Stefano Caliro, Giovanni Chiodini, Virginie Pinel, Eleonora Rivalta, Elena Spagnuolo, Elisa Trasatti, Mauro Antonio Di Vito   +10 more
wiley   +1 more source