Results 61 to 70 of about 78,518 (194)

Shallow volcanic earthquakes in the Owakudani geothermal area, Hakone volcano, Japan

Earth, Planets and Space
Hakone volcano, located in central Japan, produced a small phreatic eruption in June 2015. Although seismic activity in the Hakone region is generally low, the area experiences episodic earthquake swarms approximately once every few years. In the volcano,
Ryo Kurihara, Yutaka Nagaoka, Ryou Honda, Kazuhiro Itadera   +3 more
doaj   +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

InSAR Evidence of Small‐Scale Faults Activated During Rift Zone Intrusions at Piton de la Fournaise Volcano

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Volcanic edifices show complex internal structures including discontinuities at different scales. These discontinuities can act as zones of weakness and are closely linked to volcanic activity distribution and associated hazards, making their detection and monitoring essential. In this study we investigate the presence of small‐scale faults on
Quentin Dumont, Jean‐Luc Froger, Lydie Gailler, Anthony Finizola, Stéphanie Barde‐Cabusson   +4 more
wiley   +1 more source

Fluid-mineral dynamics at the Rincón de la Vieja volcano—hydrothermal system (Costa Rica) inferred by the study of major, minor and rare earth elements in the hyperacid crater lake

Frontiers in Earth Science, 2023
Volcanic lakes are complex natural systems and their chemical composition is related to a myriad of processes. The chemical composition of major, minor, Rare Earth Elements (REE) and physico-chemical parameters at the hyperacid crater lake of Rincón de ...
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Gilles Levresse, Loic Peiffer, Loic Peiffer, Carmine Apollaro, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Benedetto Schiavo, Thomas Gunter Kretzschmar, Lorenzo Brusca   +15 more
doaj   +1 more source

Terrestrial Analogs to Titan for Geophysical Research

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon, Samuel Birch, Audrey Chatain, Charles Cockell, Kendra K. Farnsworth, Peter M. Higgins, Stéphane Le Mouélic, Rosaly M. C. Lopes, Michael J. Malaska, Mohit Melwani Daswani, Kelly E. Miller, Catherine D. Neish, Olaf G. Podlaha, Jani Radebaugh, Lauren R. Schurmeier, Ashley Schoenfeld, Krista M. Soderlund, Anezina Solomonidou, Christophe Sotin, Nicholas A. Teanby, Tetsuya Tokano, Steven D. Vance   +21 more
wiley   +1 more source

Transition from magmatic to phreatomagmatic eruptions in Young Ciremai volcano, Indonesia: insights from stratigraphy, componentry, and textural analysis of tephra deposits

Earth, Planets and Space
Vulcanian eruptions, characterized by intermediate magma compositions, pose significant hazards due to their potential for both magmatic and phreatomagmatic fragmentation.
Wildan N. Hamzah, Tsukasa Ohba, Muhammad Andriansyah Gurusinga, Mradipta L. A. Moktikanana, Jananda N. Indriyanto, Takashi Hoshide, Mirzam Abdurrahman, Idham A. Kurniawan, Fadlin   +8 more
doaj   +1 more source

Arc Heat Flow and Magmatic Heat Budgets

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract We evaluate hydrothermal heat loss from 11 volcanic‐arc segments (∼6,000 km of arc length, ∼10% of the global total), motivated by the observation that much magmatic heat ultimately crosses the land surface as heated aqueous fluid. Heat loss takes place by volcanic eruption, geothermal heat conduction to the surface, fumarolic (vapor ...
S. E. Ingebritsen, Kazuki Sawayama, Yuri Taran, Giovanni Chiodini, Tsuneomi Kagiyama, Hiroshi Shinohara, Julie V. Rowland, Benjamin A. Black   +7 more
wiley   +1 more source

Landslide Character and Hydrological Thresholds for Slope Failure Initiation on Volcanic Scoria Slopes: Case Study From Mt Hobson/Ōhinerau, Auckland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Rainfall‐induced landslides involving on Auckland Volcanic Field scoria cones are highly unusual, compared with widespread landsliding in the surrounding Auckland clay‐rich residual soils. Indeed, while Auckland can suffer from thousands of rainfall‐induced shallow landslides from severe storms at subdecadal timescales, these are usually limited to ...
Beatrice Bertelli, Martin Brook
wiley   +1 more source

Geophysical examination of the 27 April 2016 Whakaari/White Island, New Zealand, eruption and its implications for vent physiognomies and eruptive dynamics

Earth, Planets and Space, 2019
At approximately 09:36 UTC on 27 April 2016, a phreatic eruption occurred on Whakaari Island (White Island) producing an eruption sequence that contained multiple eruptive pulses determined to have occurred over the first 30 min, with a continuing tremor
Braden Walsh, Jonathan Procter, Ivan Lokmer, Johannes Thun, Tony Hurst, Bruce Christenson, Arthur Jolly   +6 more
doaj   +1 more source

Seismo‐Acoustic Evidence for Meteoric Water Modulation of Hydrothermal Fluid Discharge

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Deciphering the signal of external processes on active hydrothermal dynamics represents a critical challenge in understanding volcanic unrest. At the Pisciarelli hydrothermal site, located within the densely populated Campi Flegrei caldera (Italy), we investigate the role of meteoric water influx in modulating shallow hydrothermal fluid ...
Rebecca Sveva Morelli, Dario Delle Donne, Stefano Caliro, Lucia Nardone, Massimo Orazi, Alessandro Aiuppa, Ciro Buonocunto, Aldo Benincasa, Antonella Bobbio, Antonio Caputo, Prospero De Martino, Sergio Gammaldi, Danilo Galluzzo, Flora Giudicepietro, Francesco Liguoro, Vincenzo Morra, Lucia Pappalardo, Rosario Peluso, Patrizia Ricciolino, Francesco Rufino, Giovanni Scarpato, Maria Grazia Soldovieri, Anna Tramelli, Mauro Antonio Di Vito   +23 more
wiley   +1 more source