Results 81 to 90 of about 418,217 (192)

Photometric Characterization of the Moon's Silicic Sites: Insights Into the Origin of Silica‐Rich Magmas

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract Lunar “red spots” have been inferred to be regions of extrusive silicic volcanism based on the analysis of remote sensing observations that suggest SiO2 ${\mathrm{S}\mathrm{i}\mathrm{O}}_{2}$‐rich, FeO‐poor composition and morphologies similar to terrestrial silicic domes.
S. R. Burnette, K. L.  Donaldson Hanna, A. Dove, J. M. Sunshine, L. Santori, S. N. Valencia   +5 more
wiley   +1 more source

Geofluid mapping reveals the connection between magmas, fluids, and earthquakes

Communications Earth & Environment
Subsurface geofluids drive Earth’s evolution through seismogenesis, volcanism, and plate motion. Previous geofluid-distribution estimates from various geophysical methods show large variations.
Hikaru Iwamori, Yasuo Ogawa, Tomomi Okada, Tohru Watanabe, Hitomi Nakamura, Tatsu Kuwatani, Kenji Nagata, Atsushi Suzuki, Masahiro Ichiki   +8 more
doaj   +1 more source

Subsurface Deformation and Recovery From the Ridgecrest Mw 7.1 Earthquake Revealed by P‐Wave Velocity Time‐Lapse Tomography

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract We investigate co‐ and post‐seismic P‐wave velocity (Vp) changes following the July 2019 Mw 7.1 Ridgecrest strike‐slip earthquake using time‐lapse tomography from 50,345 P‐wave arrivals (2011–2024). Co‐seismically, Vp changes correspond to the volumetric strain change lobes of the earthquake, increasing in compressional zones and decreasing in
Yuanlong Li, Shunping Pei, Chunmei Ren, Yifang Cheng   +3 more
wiley   +1 more source

Evolution of a silicic magma reservoir in the upper crust [Elektronisk resurs] : Reyðarártindur pluton, Southeast Iceland

, 2022
Field observations of extinct and exposed magma reservoirs shed light on processes operating in the roots of presently active volcanoes. The Reyðarártindur pluton, Southeast Iceland is an example of a fossil shallow magma reservoir that fed eruptions ...
Rhodes, Emma,, Barker, Abigail,, Cruden, Alexander,, Burchardt, Steffi,, Parker, Charles F.,   +4 more
core  

Graph Neural Network based elastic deformation emulators for magmatic reservoirs of complex geometries

Volcanica
Measurements of volcano deformation are increasingly routine, but constraining complex magma reservoir geometries via inversions of surface deformation measurements remains challenging.
Taiyi A. Wang, Ian McBrearty, Paul Segall   +2 more
doaj   +1 more source

Role of mechanical erosion in controlling the effusion rate of basaltic eruptions

Geophysical Research Letters, 2016
In many basaltic eruptions, observations show that the effusion rate of magma has a typical dependence on time: the effusion rate curves show first a period of increasing and later a decreasing phase by a maximum value. We present a model to explain this
Antonello Piombo, Andrea Tallarico, Michele Dragoni   +2 more
doaj   +1 more source

Revealing the Hydrothermal System of La Soufrière Volcano (Guadeloupe) Through Nodal Ambient Noise Tomography

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract La Soufri'ere de Guadeloupe is an active volcano of the Lesser Antilles Volcanic Arc. Its last eruption halted in 1977, yet hydrothermal activity has increased over recent years, raising summit instability hazards. The link between hydrothermal fluids and detachment landslide surfaces is well established and exacerbated by inflation ...
Elliot Amir Jiwani‐Brown, Iván Cabrera‐Pérez, Laurie Mischler, Douglas Stumpp, Geneviève Savard, Catherine Truffert, Alberto Rosselli, Federico Fischanger, Filippo Barsuglia, Matteo Lupi   +9 more
wiley   +1 more source

Imaging the multi-level magma reservoir at Mt. Etna volcano (Italy) [PDF]

, 2011
The continuous GPS network operating on Mt. Etna with its 36 stations is currently one of the largest worldwide. The aim of this network is the evaluation of volcanic hazard and the modelling of the active sources.
Ferlito C, Palano M, Bruno V, Mattia M, Cannavo F, Aloisi M   +5 more
core   +1 more source

Million‐Year Scale Hydrothermal and Hydrocarbon Evolution Hosted Within Stratified Thermohydraulic Systems in Sedimented Ultraslow‐Spreading Settings, Svyatogor and Vestnesa Ridges

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Hydrothermal systems at ultraslow‐spreading ridges are poorly understood, especially where thick sediments overlay detachment faults. The International Ocean Discovery Program Expedition 403 obtained the longest sediment record in Atlantic‐Arctic ultraslow‐spreading systems, reaching ∼628 m below the seafloor.
Y. Sakai, Y. Fukamatsu, V. J. Clementi, Y. Rosenthal, J. Gruetzner, S. Bünz, A. Plaza‐Faverola, K. St. John, R. G. Lucchi, T. A. Ronge, O. Libman‐Roshal, L. Monito, Y. Liu, M. Iizuka, L. Duxbury, L. Haygood, O. Tadai, G.‐I. Uramoto, W. Lin, Expedition 403 Shipboard Scientists   +19 more
wiley   +1 more source

Magma mobilization by downward-propagating decompression of the Eyjafjallajökull volcanic plumbing system [PDF]

Detailed observations of the 2010 Eyjafjallajökull eruptions in Iceland show seismic activity propagating vertically through the entire crust during a ten-week period of volcanic unrest comprising multiple eruption episodes.
White, R. S., Brandsdóttir, B., Gudmundsson, M. T., Woods, A. W., Tarasewicz, J. P. T.   +4 more
core   +1 more source