Results 41 to 50 of about 616 (171)

Crustal Shear‐Wave Velocity and Azimuthal Anisotropy Imaging Reveals the Merapi‐Merbabu‐Telomoyo Volcanic Chain, Central Java

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We present new results from ambient noise tomography and azimuthal anisotropy analysis of the DOMERAPI data set to investigate crustal structure beneath the Merapi‐Merbabu‐Telomoyo region in central Java. The 3D shear‐wave velocity (Vs) model reveals a prominent high‐Vs anomaly extending from south of Merapi through Merbabu to Telomoyo ...
Iqwal Ramadhan, Sri Widiyantoro, Zulfakriza, Jean‐Philippe Metaxian, Nicholas Rawlinson, Jean‐Paul Montagner, Tedi Yudistira   +6 more
wiley   +1 more source

Dense magnetotelluric imaging of the Akan Caldera (Hokkaido, Japan): insights into its magma plumbing system and caldera-forming reservoir

Earth, Planets and Space
To investigate the magma plumbing system beneath the Akan Caldera (Hokkaido, Japan), we conducted broadband magnetotelluric surveys and imaged its three-dimensional resistivity structure to a depth of approximately 30 km.
Tomohiro Inoue, Takeshi Hashimoto, Koki Aizawa, Hiroshi Ichihara, Ryo Tanaka, Yusuke Yamaya   +5 more
doaj   +1 more source

Gas Measurements Reveal Fractional Degassing and Water Interaction During a Flank Eruption of Pacaya Volcano (Guatemala)

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract SO2 flux and gas composition were measured during the 2021 flank eruption of Pacaya Volcano (Guatemala). The SO2 flux, measured with Tropomi, gradually rose from ∼2 to ∼30 kg/s over a 5 month period before the eruption. Field UV camera data showed that >95% of the SO2 was emitted from the summit crater.
Robin Campion, Ali Zare, Sébastien Valade, Denis Legrand, Gustavo Chigna, Yves Moussallam   +5 more
wiley   +1 more source

Geothermobarometry of the 2010 Eyjafjallajökull eruption: New constraints on Icelandic magma plumbing systems [PDF]

Journal of Geophysical Research: Solid Earth, 2012
The 2010 Eyjafjallajökull eruption in Iceland produced mildly alkaline basalt that was emitted during the initial flank eruptive phase, whereas tephra predominately of benmorite composition was erupted during the second explosive phase from the summit of the volcano.
Keiding, J.K., Sigmarsson, Olgeir
openaire   +4 more sources

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
wiley   +1 more source

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang, Lun Li, Chen Cai, Jialong He, Hongyi Li, Yulong Xue, Jinming Zhang, Yuan Gao, Ziwei Li, Rui Gao   +9 more
wiley   +1 more source

Tales From Three 18th Century Eruptions to Understand Past and Present Behaviour of Etna

Frontiers in Earth Science, 2021
The structure of an active volcano is highly dependent on the interplay between the geodynamic context, the tectonic assessment as well as the magmatic processes in the plumbing system.
Rosa Anna Corsaro, Stefano Branca, Emanuela De Beni, Jean-Claude Tanguy   +3 more
doaj   +1 more source

Characterization of the Plumbing System Beneath Askja Caldera, Iceland, Revealed by Microgravity and Deformation Data During Uplift Between 2022 and 2023

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract In July 2021, an episode of uplift started at Askja caldera, Iceland, following over 50 years of subsidence. The initial inflation rate was approximately 700mm/yr $700\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$, declining to 350mm/yr $350\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$ within 1 month.
Josefa Sepúlveda‐Araya, Andrew Hooper, Elske van Dalfsen, Susanna K. Ebmeier, Michelle Parks, Freysteinn Sigmundsson, Yilin Yang, Milan Lazecký, Mathijs Koymans, Chiara Lanzi, Pedro Espín‐Bedón   +10 more
wiley   +1 more source

Deep Seismic Tremors in the 2025 Santorini Seismo‐Volcanic Crisis Highlight Magmatic Feeding From a Mid‐Crustal Reservoir

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract An intense seismic swarm started on 27 January 2025 in the Santorini‐Amorgos region and lasted for approximately 45 days. A widely observed seismic tremor on 14 February 2025 suggested a volcanic origin for the 2025 Santorini crisis. Here we present an in‐depth combined seismological analysis of the earthquakes and tremors that occurred during
Jean Soubestre, Jannes Münchmeyer, Quentin Higueret, Nikolai M. Shapiro, Florent Brenguier, Anthony Lomax   +5 more
wiley   +1 more source

Tracking the 2007–2023 magma-driven unrest at Campi Flegrei caldera (Italy)

Communications Earth & Environment
Understanding and managing unrest at a volcano include i) ascertaining the magmatic distribution and migration, and ii) tracking the evolution of the shallow plumbing system.
Ana Astort, Elisa Trasatti, Luca Caricchi, Marco Polcari, Prospero De Martino, Valerio Acocella, Mauro A. Di Vito   +6 more
doaj   +1 more source