Results 71 to 80 of about 18,310,087 (195)

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

Magma storage and plumbing of adakite-type post-ophiolite intrusions in the Sabzevar ophiolitic zone, northeast Iran [PDF]

Solid Earth, 2015
Subduction-related adakite-type intrusive rocks emplaced into the late Cretaceous–Paleocene Sabzevar ophiolite zone, northeast Iran, range from Mg-andesite to rhyodacite in composition.
K. Jamshidi, H. Ghasemi, V. R. Troll, M. Sadeghian, B. Dahren   +4 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

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

Transport of deep-derived carbon dioxide in magma plumbing systems

Japanese Magazine of Mineralogical and Petrological Sciences, 2011
Carbon dioxide fluxing is a recently proposed process in which a large amount of CO2-rich vapour migrates in crustal magmatic systems. Such a proposal was derived from analytical studies on glass inclusions that have higher CO2/H2O ratios than those usually expected from a simple degassing process.
openaire   +2 more sources

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

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

Plumbing system dynamics during the 2024 paroxysmal sequence at the Voragine crater of Mt. Etna volcano as revealed by the olivine crystal cargo

Volcanica
The sequence of six paroxysmal eruptions that occurred between July and August 2024 at Mt. Etna’s Voragine crater has been investigated in order to constrain the plumbing system dynamics.
Massimiliano Cardone, Giorgio Costa, Marisa Giuffrida, Marco Viccaro   +3 more
doaj   +1 more source

Constraining the Magmatic Plumbing System in a Zoned Continental Flood Basalt Province

Geochemistry, Geophysics, Geosystems, 2018
The geographic heterogeneities in lava composition observed in continental flood basalt provinces could provide a probe of material upwelling from the deep mantle and their length scales, but their utility is limited by uncertainties in the locus of ...
Tyrone O. Rooney, Susan R. Krans, Daniel Mège, Nicolas Arnaud, Tesfaye Korme, John Kappelman, Gezahegn Yirgu   +6 more
doaj   +1 more source

The Christmas 2018 Eruption at Mount Etna: Enlightening How the Volcano Factory Works Through a Multiparametric Inspection

Geochemistry, Geophysics, Geosystems, 2020
The 24–27 December 2018 flank eruption at Mount Etna (Southern Italy) has been investigated through a multidisciplinary approach in which olivine chemical zoning and diffusion chronometry data were integrated with models inferred by GNSS (Global ...
Alfio Marco Borzi, Marisa Giuffrida, Francesco Zuccarello, Mimmo Palano, Marco Viccaro   +4 more
doaj   +1 more source