Results 71 to 80 of about 418,217 (192)

Late Pliocene–Quaternary Arc Volcanism at the Southern Limit of the Hikurangi Subduction Zone: Revised Chronology of the Taranaki Peninsula, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Igneous centres across the Taranaki Peninsula represent the southwestern limit of arc volcanism associated with the Tonga–Kermadec–Hikurangi subduction system. Taranaki Maunga, the youngest and largest of three andesitic stratovolcanoes, dominates the geomorphology of the Taranaki Peninsula along with the eroded remnants of the Kaitake and Pouakai ...
G. P. Thrasher, M. W. Sagar, H. Seebeck, G. P. D. Viskovic   +3 more
wiley   +1 more source

Fault-controlled magma pathways driving seismicity and eruption risk in Eastern Turkey

Communications Earth & Environment
Many oceanic and some continental transform faults host coupled tectonic shear and magmatism, complicating seismic and volcanic hazards. Here we integrate high-resolution seismic tomography and three-dimensional finite-element modelling to investigate ...
Özgür Karaoğlu, Ivan Koulakov, Tuna Eken, Mohsen Bazargan, Taras Gerya, Luca Dal Zilio, Agust Gudmundsson   +6 more
doaj   +1 more source

Evolution of Summit Magma Pressure During the 2018 Caldera Collapse at Kīlauea Volcano

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract We utilized geodetic data from the 16 May to 4 August 2018 caldera collapse sequence to refine the geometries and pressure evolution of two summit reservoirs at Kīlauea volcano: the shallower Halema‘uma‘u (HMM) and deeper South Caldera (SC) reservoirs.
Eric Berg, Taiyi A. Wang, Elizabeth Wig, Paul Segall, Kyle Anderson   +4 more
wiley   +1 more source

Tectonics on Early Earth Driven by Earth's Changing Shape During Tidal Recession of the Moon

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 11, November 2026.
Abstract Few fragments of Earth's earliest crust have survived, and so this formative period of our planet's history is shrouded in mystery. To leverage the limited data available, it is important to understand all the processes that could have shaped our young planet.
S. J. Lock
wiley   +1 more source

Lava production at Soufriere Hills Volcano, Montserrat: 1995-2009 [PDF]

, 2010
[1] We estimate that about 1 km3 of andesitic lava has been produced at Soufrière Hills Volcano, Montserrat from 1995 to 2009. There were three major episodes of extrusion, each lasting about 2 to 3.5 years and producing about 280 to 340 M m3 of lava ...
Calder, E. S., Herd, R, Calder, E.S., Wadge, Geoffrey, Calder, ES, Komorowski, J. -C., Calder, E. S.; id_orcid, Komorowski, J.-C., Ryan, G., Herd, R., Wadge, G., Wadge, G, Komorowski, J‐C, Ryan, G   +13 more
core   +1 more source

Insights Into Magma Reservoir Dynamics From a Global Comparison of Volcanic and Plutonic Zircon Trace Element Variability in Individual Hand Samples

Geochemistry, Geophysics, Geosystems
Trace element compositional trends in zircons separated from single hand samples have been used to infer dynamic processes in magma reservoirs. Here, we compile published zircon trace element chemistry to quantify any systematic difference between the ...
Barbara C. Ratschbacher, C. Brenhin Keller, Kari M. Cooper   +2 more
doaj   +1 more source

Hydrothermal Sealing at Turrialba, Poás, and Rincón de la Vieja Volcanoes (Costa Rica) Promotes Phreatic and Phreatomagmatic Eruptions

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 11, November 2026.
Abstract Hydrothermal sealing is a mechanism thought to be responsible for challenging‐to‐forecast phreatic and phreatomagmatic eruptions. To better understand this process, we present a study in which we assessed the textural, mineralogical, and physical properties (porosity, permeability, and tensile strength) of blocks of hydrothermal seal that were
Michael J. Heap, Geoffroy Avard, Claire E. Harnett, H. Albert Gilg, James Hickey, Thierry Reuschlé, Fabian B. Wadsworth, Maëlys Moulin, Sophie Pearson‐Grant, J. Maarten de Moor, Emily Mick, Patrick Baud   +11 more
wiley   +1 more source

A constant influx model for dike propagation : implications for magma reservoir dynamics [PDF]

, 2010
International audienceMost observations of seismicity rate during dike propagation on basaltic volcanoes show (1) rate stationarity despite possible variations of the dike tip velocity, (2) frequent lack of clear and monotonic hypocenter migration ...
Grasso, J. -R., Pinel, V., Pinel, Virginie, Traversa, P., Grasso, J. R., Traversa, Paola   +5 more
core   +1 more source

Interpreting Synthetic Aperture Radar Backscatter During Effusive Eruptions: Insights From Rift and Summit Activity at Kīlauea, Island of Hawai'i

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 11, November 2026.
Abstract Synthetic aperture radar (SAR) backscatter has particular advantages for monitoring the progression of effusive eruptions. It does not rely on cloud‐free or daytime satellite acquisitions and is particularly sensitive to surface roughness and local slope changes, providing complementary information to other sensors.
E. W. Dualeh, S. K. Ebmeier, T. J. Wright, M. P. Poland   +3 more
wiley   +1 more source

Asymmetric magma plumbing system beneath Axial Seamount based on full waveform inversion of seismic data

Nature Communications
The architecture of magma plumbing systems plays a fundamental role in volcano eruption and evolution. However, the precise configuration of crustal magma reservoirs and conduits responsible for supplying eruptions are difficult to explore across most ...
Jidong Yang, Hejun Zhu, Zeyu Zhao, Jianping Huang, David Lumley, Robert J. Stern, Robert A. Dunn, Adrien F. Arnulf, Jianwei Ma   +8 more
doaj   +1 more source