Results 61 to 70 of about 418,217 (192)
Venus: A Thick Basal Magma Ocean May Exist Today
Geophysical Research Letters, 2020 Basal magma oceans develop in Earth and Venus after accretion as their mantles solidify from the middle outward. Fractional crystallization of the basal mantle is buffered by the core and radiogenic and latent heat in the magma ocean.
J. G. O'Rourke
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Modeling the Intermittent Lava Lake Drops Occurring Between 2015 and 2021 at Nyiragongo Volcano
Geophysical Research Letters, 2023 Between 2015 and 2021, Nyiragongo's lava lake level experienced a linear increase punctuated by fast intermittent drops. These drops occurred synchronously to seismic swarm at approximately 15 km below the surface and extending laterally NE from the ...
D. Walwer +5 more
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Geochemistry, Geophysics, Geosystems, 2021 The Tierra Blanca (TB) eruptive suite comprises the last four major eruptions of Ilopango caldera in El Salvador (≤45 ka), including the youngest Tierra Blanca Joven eruption (TBJ; ∼106 km3): the most voluminous event during the Holocene in Central ...
A. Cisneros de León +11 more
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Melt re-injection into large magma reservoir after giant caldera eruption at Kikai Caldera Volcano
Communications Earth & EnvironmentMelt re-injection after a giant caldera eruption was quantitatively investigated for the Kikai Caldera Volcano in Japan, which erupted 7300 years ago (Kikai-Akahoya eruption). Our seismic refraction survey revealed a low-velocity anomaly directly beneath
Akihiro Nagaya +5 more
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Evolution of a silicic magma reservoir in the upper crust : 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
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Annual Review of Earth and Planetary SciencesThe interplay between melt, crystals, and volatile bubbles controls the physical properties of magmas in Earth's crust, the rate of phase separation, and, by extension, chemical differentiation. The mechanical processes that couple crystals, bubbles, and melt are nonlinear, and their expression in magmatic systems can vary greatly with the relative ...
Christian Huber +7 more
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Probing Magma Reservoirs to Improve Volcano Forecasts
Eos, 2017 The roots of volcanoes remain enigmatic, largely because geophysical and petrological models remain rudimentary. Scientific drilling and exploration can help.
Jacob Lowenstern +2 more
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Modeling of Eruption Intervals and Durations by a Simple Magma System: the RC Magma System Model [PDF]
, 2016 Eruption intervals and durations are controlled by various parameters of subsurface magma system including sizes of magma reservoirs and conduits, viscosity of magma, and magma supply rates. For the purpose of examining the effects of these parameters on
Motoo,UKAWA, 鵜川,元雄
core
Volcanic unrest as seen from the magmatic source: Reyðarártindur pluton, Iceland
Scientific ReportsHow the Earth’s crust accommodates magma emplacement influences the signals that can be detected by monitoring volcano seismicity and surface deformation, which are routinely used to forecast volcanic eruptions.
Emma Rhodes +7 more
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Maars to calderas: end-members on a spectrum of explosive volcanic depressions
Frontiers in Earth Science, 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 ...
Danilo M. Palladino +3 more
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