Results 181 to 190 of about 2,078 (215)
Some of the next articles are maybe not open access.
Conduit implosion during Vulcanian eruptions
Geology, 2005Fragmentation experiments and detailed textural studies were performed on Vulcanian pyroclasts of variable porosity from Soufriere Hills volcano, Montserrat. We use textural differences to identify two types of pyroclasts with distinct eruption histories.
O. Spieler +5 more
openaire +2 more sources
A model of vulcanian eruptions at Galeras volcano, Colombia
Journal of Volcanology and Geothermal Research, 1997Abstract A series of six vulcanian eruptions at Galeras volcano, Colombia, occurred during 1992–1993. These eruptions followed the emplacement of a lava dome in late 1991, which was accompanied by cooling, crystallizing and partial solidification of the column of magma plugging the conduit.
Gloria Patricia Cortés J +6 more
openaire +2 more sources
Breadcrust bombs as indicators of Vulcanian eruption dynamics at Guagua Pichincha volcano, Ecuador
Bulletin of Volcanology, 2006 Vulcanian eruptions are common at many volcanoes around the world. Vulcanian activity occurs as either isolated sequences of eruptions or as precursors to sustained explosive events and is interpreted as clearing of shallow plugs from volcanic conduits. Breadcrust bombs characteristic of Vulcanian eruptions represent samples of different parts of these
Heather Wright +3 more
openalex +5 more sources
Earth and Planetary Science Letters, 2011
Abstract The dynamics of magma fragmentation is a controlling factor in the behavior of explosive volcanic eruptions. If porous magma is sufficiently decompressed, a fragmentation front develops and travels through the magma at a certain speed (fragmentation speed) while the resulting particles are being ejected.
Miguel A. Alatorre-Ibargüengoitia +2 more
openaire +2 more sources
Abstract The dynamics of magma fragmentation is a controlling factor in the behavior of explosive volcanic eruptions. If porous magma is sufficiently decompressed, a fragmentation front develops and travels through the magma at a certain speed (fragmentation speed) while the resulting particles are being ejected.
Miguel A. Alatorre-Ibargüengoitia +2 more
openaire +2 more sources
Vulcanian/hydrothermal eruptions of Ebeko volcano, Kurile Islands
2020<p>Ebeko is a small (1156 m a.s.l) andesitic volcano located in the northern part of Paramushir island of Kurile Island Arc. It is not well studied but in fact represents the most active volcano of the Kuriles&#160; with > 10 eruptions recorded in the 20th century.&#160; All historical eruptions of the ...
Alexander Belousov +3 more
openaire +2 more sources
Analysis of infrasonic and seismic events related to the 1998 Vulcanian eruption at Sakurajima
Journal of Volcanology and Geothermal Research, 2008Abstract We present results from a detailed analysis of seismic and infrasonic data recorded over a four day period prior to the Vulcanian eruptive event at Sakurajima volcano on May 19, 1998. Nearly one hundred seismic and infrasonic events were recorded on at least one of the nine seismic–infrasonic stations located within 3 km of the crater.
Kazuhiro Ishihara +3 more
openaire +2 more sources
2015
Vulcanian eruptions, however, are more complex to classify. Vulcanian eruptions were first distinguished by Mercalli and Silvestri (1891) who noticed that the 1888–1890 eruption of Vulcano in the Aeolian Islands was somewhat different from eruptions of nearby Stromboli volcano.
Amanda Bachtell Clarke +2 more
openaire +2 more sources
Vulcanian eruptions, however, are more complex to classify. Vulcanian eruptions were first distinguished by Mercalli and Silvestri (1891) who noticed that the 1888–1890 eruption of Vulcano in the Aeolian Islands was somewhat different from eruptions of nearby Stromboli volcano.
Amanda Bachtell Clarke +2 more
openaire +2 more sources
Energy consumption by magmatic fragmentation and pyroclast ejection during Vulcanian eruptions
Earth and Planetary Science Letters, 2010Abstract Magmatic fragmentation during explosive eruptions consumes a significant amount of energy by the creation of new surface via fracturing. This process reduces the energy that can be imparted to the resulting pyroclasts in the form of kinetic energy.
Jacopo Taddeucci +4 more
openaire +2 more sources
Pulsed Vulcanian explosions: A characterization of eruption dynamics using Doppler radar
Geology, 2015Understanding the dynamics of ongoing volcanic eruptions is essential for predicting the input and transport of volcanic ash in the atmosphere. To constrain near-vent dynamic processes of explosive Vulcanian events, we used Doppler radar measurements, providing tephra velocities and a proxy of the mass flux, in two field experiments at Volcan de Colima
Lea Scharff, Nick Varley, Matthias Hort
openaire +2 more sources
Journal of South American Earth Sciences, 2019
Abstract Azufral is one of the most touristic, but also one of the most explosive active volcanoes of SW-Colombia. Although no historical eruptions have occurred, the potential thread is inferred from the predominance of dacitic pyroclastic units and lava domes since the Holocene.
David Noguera +7 more
openaire +2 more sources
Abstract Azufral is one of the most touristic, but also one of the most explosive active volcanoes of SW-Colombia. Although no historical eruptions have occurred, the potential thread is inferred from the predominance of dacitic pyroclastic units and lava domes since the Holocene.
David Noguera +7 more
openaire +2 more sources