Results 291 to 300 of about 301,733 (364)
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Clastic and core lava components of a silicic lava dome
Geology, 2009The formation of a lava dome involves fractionation of the lava into core and clastic components. We show that for three separate, successive andesitic lava domes that grew at Soufriere Hills volcano, Montserrat, between 1999 and 2007, the volumetric proportion of the lava converted to talus or pyroclastic flow deposits was 50%–90% of the lava extruded.
G. Ryan +3 more
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Seismometric investigation of the Hawaiian lava column
Bulletin of The Seismological Society of America (BSSA), 1920In Chapter 1, introduction, this article is stated to be concerned with correlations between rising and falling magma and measurement of ground movements.
T. Jaggar
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New Scientist, 2016
Ceurstemont talks about a photograph of the Laki fissure in southern Iceland. During this event, named the Laki eruption, the Grimsvotn volcano and a 27-kilometre-long fissure-as well as massive craters, like the one shown here--erupted for eight months. Lingering ash and volcanic gases cooled global temperatures for about three years.
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Ceurstemont talks about a photograph of the Laki fissure in southern Iceland. During this event, named the Laki eruption, the Grimsvotn volcano and a 27-kilometre-long fissure-as well as massive craters, like the one shown here--erupted for eight months. Lingering ash and volcanic gases cooled global temperatures for about three years.
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Journal of Volcanology and Geothermal Research, 2006
A physical model of a generic lava lake system is developed. We derive the requisite conditions for the existence of an ‘equilibrium lava lake’ in which magmastatic pressure at the base of the conduit balances the pressure in the underlying magmatic reservoir.
Witham, F, Llewellin, EW
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A physical model of a generic lava lake system is developed. We derive the requisite conditions for the existence of an ‘equilibrium lava lake’ in which magmastatic pressure at the base of the conduit balances the pressure in the underlying magmatic reservoir.
Witham, F, Llewellin, EW
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, 2009 Wie wir gesehen haben, werden bei Vulkanausbruchen glutheise Gesteinsschmelzen aus dem Erdinnern gefordert, die unter sturmischer Entgasung ausfliesen oder explosiv herausgeschleudert werden. Man muss daraus schliesen, dass im Erdinnern glutheise Schmelzen existieren, in denen leichtfluchtige (volatile) Komponenten gelost sind.
Martin Okrusch, Siegfried Matthes
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The Journal of Geology, 1939
Palmer, by assuming that the Alika flow of Hawaii when liquid was turbulent, found that its viscosity was 15 times that of water. Becker, who also assumed turbulent motion, found that the viscosty of the 1840 flow of Hawaii was 60 times that of water.
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Palmer, by assuming that the Alika flow of Hawaii when liquid was turbulent, found that its viscosity was 15 times that of water. Becker, who also assumed turbulent motion, found that the viscosty of the 1840 flow of Hawaii was 60 times that of water.
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Applied Optics, 2011
An interesting optical focusing effect occurred in the early heating phases of a simple model of a lava lamp that was constructed to demonstrate convection effects. During this early heating phase, the interface between the two immiscible liquids was found to form a surface of rotation with a conic cross section that acted as a mirror to produce an ...
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An interesting optical focusing effect occurred in the early heating phases of a simple model of a lava lamp that was constructed to demonstrate convection effects. During this early heating phase, the interface between the two immiscible liquids was found to form a surface of rotation with a conic cross section that acted as a mirror to produce an ...
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Quarterly Journal of the Geological Society of London, 1933
The geology and physical geography of Mauritius formed the subject of a communication to the Geological Society by Major H. de Haga Haig in 1895, 1 which has been the basis of subsequent descriptions of the island in the Encyclopædia Britannica and elsewhere.
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The geology and physical geography of Mauritius formed the subject of a communication to the Geological Society by Major H. de Haga Haig in 1895, 1 which has been the basis of subsequent descriptions of the island in the Encyclopædia Britannica and elsewhere.
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