Results 91 to 100 of about 132,852 (226)

Volcanic Facies From Probabilistic Multi‐Physics Characterization of an Andesite Island Volcano, Whakaari/White Island, New Zealand

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Collapse of hydrothermally weakened rock on the flanks of volcanic islands is a recognized cause of tsunamis generated by volcanoes. Here we use a multiphysics clustering method to derive a volcanic facies model for Whakaari/White Island, an andesite arc volcanic island in New Zealand.
C. A. Miller, F. Caratori Tontini
wiley   +1 more source

Volcanic Radiative Power Retrieval From Moderate‐to‐Low‐Temperature Features Using a Single TIR Band: Validation Using Volcanic Crater Lakes and Hydrothermal Systems

Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract Assessing Radiative Power (RP) output is essential for monitoring and understanding volcanic systems. While Mid‐Infrared channels are used to assess thermal outputs at volcanoes exhibiting effusive activity, Thermal‐InfraRed (TIR) bands are better suited for measuring moderate‐to‐low‐temperature (≲600 K) features, such as those associated with
Simone Aveni, Sophie Pailot‐Bonnétat, Dmitri Rouwet, Andrew J. L. Harris, Diego Coppola   +4 more
wiley   +1 more source

Leachate Analyses of volcanic ashes from the 2010 Eyjafjallaj\uf6kull eruption [PDF]

, 2011
Volcanic processes which lead to eruptions can be investigated by monitoring a variety of parameters, including the composition of ash leachates. Fine-grained tephra erupted from active vents, and transported through volcanic plumes, can adsorb, and ...
Aiuppa, A., Bagnato, E., Bertagnini, A., Bonadonna, C., Cioni, R., Pedone, M., Pistolesi, M.   +6 more
core  

A thermodynamical model for rainfall-triggered volcanic dome collapse [PDF]

, 2004
Dome-forming volcanic eruptions typically involve the slow extrusion of viscous lava onto a steep-sided volcano punctuated by collapse and the generation of hazardous pyroclastic flows.
Adrian J. Matthews, Barclay, Calder, Carn, Couch, Dzurisin, Jenni Barclay, Kesthelyi, Mastin, Matthews, Melnik, Oppenheimer, Sparks, Spera, Watts   +14 more
core   +1 more source

The First Instrumentally Detected Hydrothermal Explosion in Yellowstone National Park

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Hydrothermal explosions are one of the geological hazards most likely to impact people in Yellowstone National Park, but their frequency is poorly known. Infrasound and seismic sensors identified an explosion in Norris Geyser Basin on 15 April 2024, at 14:56 MDT (20:56 UTC)—the first instrumentally detected hydrothermal explosion in the ...
Michael P. Poland, Alexandra M. Iezzi, Jamie Farrell, R. Greg Vaughan   +3 more
wiley   +1 more source

Nature, origin and significance of a clayey cave deposit: Relationship between karst and Oligocene/Miocene tephra (NW Dinarides)

The Depositional Record, Volume 11, Issue 3, Page 954-974, June 2025.
A limestone cave in the NW Dinarides exhibits an anomalous presence of montmorillonite clay, not commonly found in surrounding caves, posing questions about its origin and age. Analysis reveals a composition similar to weathered tephra from the Smrekovec Volcanic Complex, suggesting transport by north‐east winds.
Nadja Zupan Hajna, Pavel Bosák, Andrej Mihevc, Michał Banaś, Jiří Filip, Lukáš Krmíček, Lenka Lisá, Šárka Matoušková, Jan Rohovec, Roman Skála, Jiří Sláma, Martin Šťastný, Jaromír Ulrych   +12 more
wiley   +1 more source

Rootless cones on Mars indicating the presence of shallow equatorial ground ice in recent times [PDF]

, 2001
High resolution Mars Orbiter Camera (MOC) images have revealed the existence of clusters of small cones in the Cerberus plains, Marte Valles, and Amazonis Planitia, Mars.
Alfred S. McEwen, Burr, Carr, Chapman, Clifford, Fagents, Frey, Hartmann, Hartmann, Hoffman, Keszthelyi, Keszthelyi, Laszlo P. Keszthelyi, Lowry, Mellon, Mouginis-Mark, Peter D. Lanagan, Plescia, Tanaka, Tanaka, Thorarinsson, Thordarson, Thordarson, Thorvaldur Thordarson   +23 more
core   +1 more source

Characteristics of Deep Long‐Period Earthquakes at Alaska Volcanoes From 2005 to 2017

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract Deep long‐period earthquakes (DLPs) are often detected near volcanoes from the crust down to the upper mantle. Exhibiting coincidence with volcanic eruptions, DLPs are recognized as potential precursors to volcanic activities yet their detection remains challenging.
Zilin Song, Yen Joe Tan
wiley   +1 more source

Forecasting Eruptions at Steamboat Geyser: Time Scales, Differentiability, and Detectability of Seismic Precursors Through Data‐Driven Methods

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 2, June 2025.
Abstract Geyser eruptions provide a test bed for using geophysical data to forecast eruptions and to understand heat and mass transport in hydrothermal systems. We used time series analyses of seismic data at Steamboat Geyser, Yellowstone National Park, to identify short‐term precursors that are recurrent, detectable in real time, distinctly ...
Alberto Ardid, Anna Barth, David Dempsey, Michael Manga, Shane J. Cronin   +4 more
wiley   +1 more source

Renewed Explosive Phreatomagmatic Activity at Poás Volcano, Costa Rica in April 2017

Frontiers in Earth Science, 2018
Phreatic and phreatomagmatic eruptions at volcanoes often present no short term precursory activity, making them a challenge to forecast. Poás volcano, Costa Rica, exhibits cyclic activity with phreatic and some phreatomagmatic eruptions separated by ...
Rebecca O. Salvage, Rebecca O. Salvage, Geoffroy Avard, J. Maarten de Moor, Javier F. Pacheco, Jorge Brenes Marin, Monserrat Cascante, Monserrat Cascante, Cyril Muller, María Martinez Cruz   +9 more
doaj   +1 more source