Results 21 to 30 of about 174,909 (244)
Frontiers in Earth Science, 2019 Minor seismicity may occur at volcanoes with hydrothermal system before a steam eruption. To forecast any steam eruption, it is indispensable to detect and understand the nature of this shallow seismicity. As the fumarolic gas resides in the hydrothermal
Takeshi Ohba +6 more
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Magmatic Densities Control Erupted Volumes in Icelandic Volcanic Systems
Frontiers in Earth Science, 2018 Magmatic density and viscosity exert fundamental controls on the eruptibility of magmas. In this study, we investigate the extent to which magmatic physical properties control the eruptibility of magmas from Iceland's Northern Volcanic Zone (NVZ).
Margaret Hartley +2 more
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Frontiers in Earth Science, 2020 Large volcanic eruptions are frequently triggered by the intrusion of hot primitive magma into a more evolved magma-chamber or -mush zone. During intrusion into the cooler mush zone, the basaltic magma undergoes crystallization, which in turn can release
Stephan Kolzenburg +5 more
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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 +3 more
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On the mechanism of interaction between strong earthquakes and volcanism in subduction zones
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022 The relationship between strong earthquakes and powerful volcanism in subduction zones are discussed. It is shown that abnormally strong earthquakes or a group of strong earthquakes and powerful volcanic events or volcanic activation of large areas can ...
Rebetsky Yu.L., Stefanov Yu.P.
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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. +3 more
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Geochemistry, Geophysics, Geosystems, 2022 Many andesites erupted at arc volcanoes are the products of magma mixing, and this process could be important in triggering their eruption. Throughout the life of Ngauruhoe volcano (∼2.5 ka), erupted andesites lack macroscopic enclaves or lithological ...
Kate Cocker +4 more
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Thick crust, hydrous magmas, and the paradox of voluminous cold magmatism
Volcanica, 2021 Andesites are refined and “cold” magmas compared to their basaltic parents, yet large volumes of andesites are generated at continental arcs. We show that large andesitic plutons are favored when arc crust attains a thickness of ~60 km while mafic ...
Cin-Ty Lee, Boda Liu
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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 +109 more
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The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc
Geochemistry, Geophysics, Geosystems, 2020 IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki +10 more
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