Results 21 to 30 of about 6,961 (274)

Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering [PDF]

Atmospheric Chemistry and Physics, 2016
Both explosive volcanic eruptions, which emit sulfur dioxide into the stratosphere, and stratospheric geoengineering via sulfur injections can potentially cool the climate by increasing the amount of scattering particles in the atmosphere. Here we employ
A. Laakso, H. Kokkola, A.-I. Partanen, A.-I. Partanen, U. Niemeier, C. Timmreck, K. E. J. Lehtinen, K. E. J. Lehtinen, H. Hakkarainen, H. Korhonen   +9 more
doaj   +1 more source

Laboratory studies on electrical effects during volcanic eruptions

Annals of Geophysics, 1999
This laboratory study reports on electrical phenomena during the explosive eruption of a basaltoid silicate melt. Contact electricity is produced in the phase of thermo-hydraulic fracturing of magma during the explosive interaction with water.
R. Büttner, B. Zimanowski, H. Röder
doaj   +1 more source

Probabilistic Source Classification of Large Tephra Producing Eruptions Using Supervised Machine Learning: An Example From the Alaska‐Aleutian Arc

Geochemistry, Geophysics, Geosystems, 2023
Alaska contains over 130 volcanoes and volcanic fields that have been active within the last 2 million years. Of these, roughly 90 have erupted during the Holocene, with many characterized by at least one large explosive eruption.
Jordan Lubbers, Matthew Loewen, Kristi Wallace, Michelle Coombs, Jason Addison   +4 more
doaj   +1 more source

Geoarchaeological tsunami deposits at Palaikastro (Crete) and the Late Minoan IA eruption of Santorini [PDF]

, 2008
The explosive eruption at Santorini in the Aegean Sea during the second millennium BCE was the largest Holocene volcanic upheaval in the Eastern Mediterranean region.
Bruins, Hendrik J.,, Synolakis, Costas E.,, Kleugel, Andreas, Kisch, Hanan J., van der Plicht, Johannes, Plicht, Johannes van der, Keller, Jörg, Synolakis, Costas E., Bruins, Hendrik J., Benjamini, Chaim, Kisch, Hanan J.,, MacGillivray, J. Alexander,, MacGillivray, Jeff Alexander, Keller, Joerg, Keller, Jörg,, Klügel, Andreas, Benjamini, Chaim,, MacGillivray, J. Alexander, Klügel, Andreas,, Plicht, Johannes van der,   +19 more
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Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile

Andean Geology, 2013
The 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past ...
Sebastian F.L. Watt, David M. Pyle, Tamsin A. Mather   +2 more
doaj   +1 more source

Explosion depths for phreatomagmatic eruptions [PDF]

Geophysical Research Letters, 2014
Subsurface phreatomagmatic explosions can result from the interaction of ascending magma with groundwater. Experiments over a wide range of energies show that for a given energy there is a depth below which an explosion will be contained within the subsurface (not erupt), and there is a corresponding shallower depth that will optimize ejecta dispersal.
Greg A. Valentine, Alison H. Graettinger, Ingo Sonder   +2 more
openaire   +1 more source

Explosive and Eruptive Stars [PDF]

Symposium - International Astronomical Union, 1974
A summary of the main results and problems concerning explosive and eruptive stars is given. The way in which the observations are related to the internal structure problems is briefly explained. Suggestions for further work are made: (1) dynamo theory, supersonic turbulence, stability of the envelope of T Tau stars; (2) rate of exchange of matter in ...
openaire   +1 more source

Studies in Fluid Dynamics as Applied to Seismology and Volcanology [PDF]

, 2001
This thesis addresses three problems in seismology and volcanology by applying fluid dynamical theories that have been developed for engineering applications. Fault zones are proposed to operate analogously to journal bearings.
Brodsky, Emily Elizabeth
core   +1 more source

Multi-stage volcanic island flank collapses with coeval explosive caldera-forming eruptions

Scientific Reports, 2018
Volcanic flank collapses and explosive eruptions are among the largest and most destructive processes on Earth. Events at Mount St. Helens in May 1980 demonstrated how a relatively small (300 km3), but can also occur in complex multiple stages.
James E. Hunt, Michael Cassidy, Peter J. Talling   +2 more
doaj   +1 more source

The frequency of explosive volcanic eruptions in Southeast Asia [PDF]

Bulletin of Volcanology, 2015
There are ~750 active and potentially active volcanoes in Southeast Asia. Ash from eruptions of volcanic explosivity index 3 (VEI 3) and smaller pose mostly local hazards while eruptions of VEI ≥ 4 could disrupt trade, travel, and daily life in large parts of the region. We classify Southeast Asian volcanoes into five groups, using their morphology and,
Whelley, Patrick L., Newhall, Christopher G., Bradley, Kyle E.   +2 more
openaire   +2 more sources