Results 61 to 70 of about 4,124 (186)

Late‐Stage Rift Evolution at Back Arc Basins: Insights From a Tomography Experiment at Orca Volcano, Bransfield Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Back‐arc basins provide insights into the processes governing the evolution of continental rifting to seafloor spreading. The Bransfield basin hosts a back arc rift that is hypothesized to be in the late stages of this transition. Orca volcano is a submarine volcano that lies on the most evolved portion of the rift.
Maleen Kidiwela, William S. D. Wilcock, Dax C. Soule, Javier Almendros   +3 more
wiley   +1 more source

Magma Storage Below Sabancaya Volcano (Southern Peru) Imaged by Broadband Magnetotellurics

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Sabancaya volcano is one of the most active volcanoes in the Central Andes. Its ongoing eruptive process is accompanied by large‐scale deformation, with activation of the Huambo‐Cabanaconde fault system, marked by intense seismicity over an area of about 50 × 30 km2 ${\mathrm{k}\mathrm{m}}^{2}$.
Jose‐Luis Torres, Svetlana Byrdina, Gonzalo Romero‐Beltran, Stéphane Garambois, Volker Rath, Yanet Antayhua, Marco Rivera, Alain Burgisser, Roger Machacca, Marco Milla, Hernando Tavera, Philip Hering   +11 more
wiley   +1 more source

Continuous monitoring of soil CO2 flux at Aso volcano, Japan: the influence of environmental parameters on diffuse degassing

Earth, Planets and Space, 2019
Continuous measurements of soil CO2 flux are useful for understanding degassing processes and for monitoring volcanic activities. Recent studies at many volcanoes have revealed that soil CO2 flux variations are significantly influenced by environmental ...
Masaaki Morita, Toshiya Mori, Akihiko Yokoo, Takahiro Ohkura, Yuichi Morita   +4 more
doaj   +1 more source

Subaqueous basaltic magmatic explosions trigger phreatomagmatism: A case study from Askja, Iceland [PDF]

Journal of Volcanology and Geothermal Research, 2013
Sequences of basaltic pillow lavas that transition upwards with systematic gradation from pillow fragment breccias to fluidal bomb-bearing breccia to bomb-bearing lapilli tuffs are common at Askja volcano, Iceland. Based on the detailed textural investigation of three of these sequences, we argue that they record temporally continuous transition from ...
Graettinger, Alison H., Skilling, Ian, McGarvie, Dave, Höskuldsson, Ármann   +3 more
openaire   +1 more source

Voluminous Inflated Lobate Flows on the Distal Rift Zones of Axial Seamount, Juan de Fuca Spreading Ridge

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Three voluminous inflated lobate lava flow complexes on the distal rifts of Axial Seamount are much larger than other known flows in the global spreading system. Each complex is 65–100 km2, is up to 130 m thick, and is ∼3.0–4.6 km3, almost 100 times the volumes of historical Axial flows.
Jennifer B. Paduan, David A. Clague, David W. Caress, Ryan Portner, Morgane Le Saout, Brian Dreyer   +5 more
wiley   +1 more source

The Geology and Lamongan Volcanic Rocks Case Study at Ranu Pakis, Klakah, Lumajang, East Java Province, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019
Lamongan volcano is one of the unique volcanoes in the Sunda Volcano. This volcano has side eruption centers or on the slopes of the volcano. The morphology of parasitic eruptions in this volcanoes complex includes maars and boccas.
Dwi Fitri Yudiantoro, Ramonada Taruna Perwira, Muchamad Ocky Bayu Nugroho   +2 more
doaj   +1 more source

Morphology and Formation of Glassy Volcanic Ash from the August 12-15, 1991 Eruption of Hudson Volcano, Chile [PDF]

, 2005
The 1991 explosive eruption of Hudson volcano in Chile ejected about 2.7 km3 (DRE) of basalt and trachyandesite magma as tephra fall. A majority of the fallout occurred from an eruption during the period August 12-15, 1991, producing an extensive deposit
Carey, Steven, Scasso, Roberto Adrian
core  

The Magmatic‐Hydrothermal System of the Three Sisters Volcanic Cluster, Oregon, Imaged From Field Gravity Measurements

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract From 2019 to 2024, gravity surveys were conducted at the Three Sisters volcanic cluster (TSVC), measuring 246 gravity sites using a spring relative gravimeter. We calculated the residual Bouguer anomaly and identified three main zones with negative anomalies, ranging from −4 to −8 mGal, located southwest and west of South Sister, within an ...
Hélène Le Mével, Nathan L. Andersen, Annika E. Dechert, Josef Dufek   +3 more
wiley   +1 more source

Hydroacoustic Observations of the 15 January 2022 Hunga Tonga‐Hunga Ha'apai Eruption: The Role of Bathymetry Along the Path

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract The 15 January 2022 submarine volcanic eruption of Hunga Tonga‐Hunga Ha'apai released immense energy throughout the ocean, solid Earth, and atmosphere. We analyze mid‐oceanic column acoustic pressure recordings from 24 freely drifting Mobile Earthquake Recorder in Marine Areas by Independent Divers sensors, and from 11 moored hydrophones in ...
Joel D. Simon, Frederik J. Simons, Jessica C. E. Irving, Wenbo Wu, Masayuki Obayashi, Yong Yu, Yongshun John Chen, Hiroko Sugioka, Yann Hello   +8 more
wiley   +1 more source

Brief communication: A magma depletion alternative for vent distribution in volcanic fields [PDF]

Natural Hazards and Earth System Sciences
The location of a volcanic vent controls an eruption's hazards, intensities, and impact. Current kernel density estimation methods of future vent locations in volcanic fields assume that locations with more past-vents are more likely to produce future ...
M. S. Bebbington, M. G. Whitehead, G. Kereszturi   +2 more
doaj   +1 more source