Results 221 to 230 of about 26,142 (273)

Insights into eruption dynamics from TROPOMI/PlumeTraj-derived SO₂ emissions during the 2022 eruption of Mauna Loa, Hawai'i. [PDF]

Bull Volcanol
Esse B, Burton M, Brenot H, Theys N.
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Seismogenic lavas and explosive eruption forecasting

Nature, 2008
Volcanic dome-building episodes commonly exhibit acceleration in both effusive discharge rate and seismicity before explosive eruptions. This should enable the application of material failure forecasting methods to eruption forecasting. To date, such methods have been based exclusively on the seismicity of the country rock.
Y, Lavallée, P G, Meredith, D B, Dingwell, K-U, Hess, J, Wassermann, B, Cordonnier, A, Gerik, J H, Kruhl   +7 more
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Explosive fragmentation of erupting magma

Nature, 1995
The magma responsible for explosive volcanic eruptions has both a volatile and an inert phase. Deep in the conduit of an active volcano, bubbles nucleate as the volatiles exsolve. As the magma rises, the bubbles grow through depressurization and continued exsolution.
Sugioka, Ichiro, Bursik, Marcus
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Explosive Volcanic Eruptions

1984
Volcanic activity takes many forms, ranging from quiet lava emissions to extremely violent and explosive bursts, many of which can be related to magma composition as discussed in Chapter 3. The kinds of eruptions can be correlated to volcano shapes and sizes, and in this chapter we explore the connection between pyroclastic systems, eruptive mechanisms
Richard V. Fisher, Hans-Ulrich Schmincke
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Airborne Acoustics of Explosive Volcanic Eruptions

Journal of Computational Acoustics, 2001
A recently developed theoretical model of the airborne acoustic field from an explosive volcanic eruption of the Strombolian type is described in this article. The magma column is assumed to be a circular cylinder, which is open to the atmosphere at the top, and which opens into a large magma chamber below.
MICHAEL J. BUCKINGHAM, MILTON A. GARCÉS
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Fine ash content of explosive eruptions

Journal of Volcanology and Geothermal Research, 2009
Abstract In explosive eruptions, the mass proportion of ash that is aerodynamically fine enough to cause problems with jet aircraft or human lungs (  50%).
W.I. Rose, A.J. Durant
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Explosive Volcanic Eruptions

2001
During explosive volcanic eruptions, up to 1014 kg of volcanic ash may be erupted from a vent forming violent ash flows or towering eruption columns. This massive amount of material is subsequently deposited on the ground, with much of the coarser fraction of the flow being deposited within a few hundred kilometres of the volcanic edifice.
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Dynamics of deep-submarine explosive eruptions

2022
<div>Deposits from explosive submarine eruptions have been found in several deep-sea locations, with both flow and fall deposits of small clasts, 1-3mm, extending 1000’s m over the seafloor. Here we propose that after mixing with seawater, the erupting fragmented material typically forms a negatively buoyant fountain.
Eric Newland, Nicola Mingotti, Andrew Woods   +2 more
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Granular disruption during explosive volcanic eruptions

Nature Geoscience, 2012
Volcanic eruptions can inject hazardous ash clouds into the atmosphere. Numerical simulations and experiments on volcanic rock samples show that clasts initially formed deep in the volcanic conduit break-up during collisions in the conduit, thus generating fine-grained clouds of ash.
Josef Dufek, Michael Manga, Ameeta Patel
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Climatic impact of explosive volcanic eruptions

Nature, 1984
Major explosive volcanic eruptions inject ash and gas into the upper atmosphere, producing aerosol layers which can affect the global energy balance and climate1. Empirical studies have shown that major eruptions can produce a decrease in surface air temperature of up to a few tenths of a degree Celsius over the Northern Hemisphere land masses and that
Kelly, Mick, Sear, C.B.
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