Results 21 to 30 of about 181,228 (320)

High‐Speed 3D Imaging of Multiphase Systems: Applying SCAPE Microscopy to Analog Experiments in Volcanology and Earth Sciences

Geochemistry, Geophysics, Geosystems, 2021
Multiphase suspensions are complex systems where microscopic interactions between suspended bubbles, particles, and liquids can significantly alter bulk behavior.
J. Oppenheimer, K. Patel, A. Lindoo, E. M. C. Hillman, E. Lev   +4 more
doaj   +1 more source

Maars to calderas. End-members on a spectrum of explosive volcanic depressions [PDF]

, 2015
We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note—we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not ...
Palladino, Danilo Mauro, Sottili, Gianluca, Taddeucci, J., Valentine, G. A.   +3 more
core   +1 more source

Volcanic eruptions from ghost magma chambers [PDF]

, 2008
Recent studies have proposed that magma reservoirs crystallized to a virtually rigid crystal-mush can be partially remelted by diffusion of hot fluids. We show that for a crystal mush with the composition of a K-trachyte from the Campanian Ignimbrite (CI)
BATTAGLIA, MAURIZIO, Mauro Brilli, SOTTILI, Gianluca, TRIGILA, Raffaello   +3 more
core   +1 more source

An analytical model for gas overpressure in slug-driven explosions:insights into Strombolian volcanic eruptions [PDF]

, 2012
Strombolian eruptions, common at basaltic volcanoes, are mildly explosive events that are driven by a large bubble of magmatic gas (a slug) rising up the conduit and bursting at the surface.
Del Bello, Elisabetta, Lane, Stephen, Llewellin, Edward W., Scarlato, Piergiorgio, Taddeucci, Jacopo   +4 more
core   +1 more source

Modelling of Magma Density and Viscocity Changes and Their Influences towards the Characteristic of Kelud Volcano Eruption

Indonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v6i4.129The effusive eruption of Kelud Volcano in 2007 was different from the previous ones, which in general were more explosive. Among others, density and viscosity are factors that determine the type of eruption.
Hanik Humaida, K. S. Brotopuspito, H. D. Pranowo, narsito narsito   +3 more
doaj   +1 more source

Structural and Geochemical Interactions Between Magma and Sedimentary Host Rock: The Hovedøya Case, Oslo Rift, Norway

Geochemistry, Geophysics, Geosystems, 2020
Two end‐member conceptual models are used to describe deformation of the Earth's crust induced by magma intrusion. “Mode I” fracturing assumes tensile or opening‐mode, elastic deformation, while “Mode II” fracturing assumes plastic shear‐mode deformation
S. Poppe, O. Galland, N. J. deWinter, S. Goderis, P. Claeys, V. Debaille, P. Boulvais, M. Kervyn   +7 more
doaj   +1 more source

Flow‐To‐Fracture Transition of Linear Maxwell‐Type Versus Yield Strength Fluids by Air Injection—Implications for Magma Fracturing

Geophysical Research Letters, 2023
To illuminate brittle and ductile fracturing of magma, we investigated bubble expansion and fracturing in two contrasting fluids: a Maxwell‐type viscoelastic fluid and a Bingham‐type yield‐strength fluid.
Claudia Sánchez, Mie Ichihara, Osamu Kuwano   +2 more
doaj   +1 more source

Physical Properties of Giant Molecular Clouds in the Large Magellanic Cloud [PDF]

, 2010
The Magellanic Mopra Assessment (MAGMA) is a high angular resolution CO mapping survey of giant molecular clouds (GMCs) in the Large and Small Magellanic Clouds using the Mopra Telescope. Here we report on the basic physical properties of 125 GMCs in the
A. Hughes, A. Kawamura, Akritas, Alves, Babu, Ballesteros-Paredes, Ballesteros-Paredes, Bergin, Bernard, Blanc, Blitz, Blitz, Blitz, Blitz, Bolatto, Bolatto, Boulanger, Chieze, Chin, Cole, D. Paradis, Dickey, Dickman, Dobashi, E. Muller, Elmegreen, Federman, Fleck, Fukui, Garay, Gaustad, Hartmann, Heikkilä, Heyer, Heyer, Heyer, Israel, Israel, Israel, Israel, J. L. Pineda, J. Ott, J.-P. Bernard, Johansson, Kawamura, Kelly, Kim, Kim, Krumholz, Krumholz, Kutner, L. Staveley-Smith, Ladd, Larson, Larson, Lequeux, Leroy, Leroy, Leroy, Luks, M. Meixner, Mac Low, MacLaren, Maloney, Marx-Zimmer, McKee, Meixner, Minamidani, Miville-Deschênes, Mizuno, Moorey, Muller, N. Mizuno, Nikolaev, Nikolaev, Ott, Paradis, Pineda, Pineda, Press, Rosolowsky, Rosolowsky, Rosolowsky, Rosolowsky, S. Kim, S. Maddison, Sault, Skrutskie, Solomon, Sorai, Staveley-Smith, Strong, T. Onishi, T. Wong, Tasker, Tremaine, Van Der Marel, Van Dishoeck, W. T. Reach, Walter, Williams, Williams, Wilson, Wolfire, Wong, Wong, Y. Fukui, Y. Mizuno, Yang, Zhao   +109 more
core   +3 more sources

Shear Velocity Evidence of Upper Crustal Magma Storage Beneath Valles Caldera

Geophysical Research Letters, 2023
Valles Caldera was formed by large rhyolitic eruptions at ∼1.6 and 1.23 Ma and it hosts post‐caldera rhyolitic deposits as young as ∼69 ka, but the contemporary state of the magmatic system is unclear.
Justin Wilgus, Brandon Schmandt, Ross Maguire, Chengxin Jiang, Julien Chaput   +4 more
doaj   +1 more source

SO₂ emissions from basaltic eruptions, and the excess sulfur issue [PDF]

, 2004
Volcanic SO2 can affect the Earth's environment. Where no direct measurements of SO2 in the atmosphere are available, a petrologic method of assessing sulfur release from the magma must be used.
Blake, S., Kreuger, A.J., Self, S., Sharma, K.   +3 more
core   +1 more source