Results 91 to 100 of about 949 (134)

Explosive Volcanism

Geochimica et Cosmochimica Acta, 1984
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The dynamics of explosive volcanic eruptions

Reviews of Geophysics, 1995
Explosive volcanic eruptions involve the ejection of dense mixtures of ash and gas from a volcanic vent at high speed and pressure. This mixture is generated as liquid magma rises from a crustal magma chamber and decompresses, exsolving water vapor. As gas is exsolved, the mixture inflates, accelerates, and becomes foam‐like.
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Hazard predictions for volcanic explosions

Journal of Volcanology and Geothermal Research, 2001
We have developed a method of producing hazard maps for volcanic eruptions using three-dimensional numerical simulations. Numerical simulations of shock-wave interactions with terrain were carried out assuming the volcanic explosion is analogous to point source explosions.
T. Saito, T. Eguchi, K. Takayama, H. Taniguchi   +3 more
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Phreatomagmatic explosions in subaqueous volcanism

2003
Pyroclastic deposits, produced during subaqueous volcanic eruptions, point to the existence of explosive processes. Magma/water interaction is a possible source of these explosions. Under atmospheric pressure a thermohydraulic explosion mechanism was identified that can explain the high kinetic energy release of phreatomagmatic explosion and the ...
Bernd Zimanowski, Ralf Büttner
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Breccias related to explosive volcanism

Journal of Southeast Asian Earth Sciences, 1986
Abstract Explosive breccia pipes were formed in the phreatomagmatic eruption of Taal volcano 60 km south of Manila, Philippines in September 1976. They were photographed in eruption which consisted of a series of small explosions occurring during the peak of activity at 10 sec intervals.
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Vaporization Waves in Explosive Volcanism

Nature, 1971
THE necessary conditions for explosive volcanism cannot yet be stated, but certain tentative requirements emerge from the study of pyroclastic rocks and from the observation of erupted magmas. In the first quantitative report on the mechanics of ash formation, Verhoogen1 required that the magma have high viscosity and a large gas content. More recently
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Explosive mafic volcanism

Journal of Volcanology and Geothermal Research, 2006
Cas RAF, GIORDANO, Guido
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Dynamical analysis of volcanic explosion

Journal of Geodynamics, 1985
Abstract Visible phenomena accompanied by volcanic explosions at Sakurajima Volcano in Kyushu, Japan, were recorded by means of a TV camera and still cameras to make clear the process of explosive eruption of a Vulcanian type by image analysis and to enable a discussion of the process of explosive eruption. The most interesting phenomenon observed by
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Relationship Between Explosive and Effusive Volcanism in the Montes Apenninus Region of the Moon

Journal of Geophysical Research E: Planets, 2023
L M Pigue, Kristen A Bennett, Briony Horgan   +2 more
exaly  

Volcanic Explosion

2022
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