Assessment of motion-induced fluidization of dense pyroclastic gravity currents
Annals of Geophysics, 2005 The paper addresses some fundamental aspects of the dynamics of dense granular flows down inclines relevant to pyroclastic density currents. A simple mechanistic framework is presented to analyze the dynamics of the frontal zone, with a focus ...
P. Salatino
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A stress-controlled mechanism for the intensity of very large magnitude explosive eruptions [PDF]
, 2011 Large magnitude explosive eruptions are the result of the rapid and large-scale transport of silicic magma stored in the Earth's crust, but the mechanics of erupting teratonnes of silicic magma remain poorly understood.
Costa, Antonio +3 more
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Indonesian Journal on Geoscience, 2014 http://dx.doi.org/10.17014/ijog.vol1no1.20066aThe eruption of Tambora volcano on the island of Sumbawa in 1815 is generally considered as the largest and the most violent volcanic event in recorded history.
Igan Supriatman Sutawidjaja +2 more
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A Fluidisation Mechanism for Secondary Hydroeruptions in Pyroclastic Flow Deposits
Frontiers in Earth Science, 2020 Heating of water under hot pyroclastic flow deposits can drive hydroeruptions, forming craters and aprons of secondary deposits. According to the established conceptual model, steam pressure builds until failure of the pyroclastic overburden and a ...
M. A. Gilbertson +3 more
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Radon concentration anomalies as possible precursors to pyroclastic flow events of Arenal volcano [PDF]
Geofísica Internacional, 2002 Radon measurements were made at five stations located on Arenal volcano’s cone, Costa Rica, using LR-115 detectors. The radon measuring stations were located on the active cone and one station was located directly over a hotspring. Radon flux anomalies
E. Malavassi +3 more
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Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]
, 2011 Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel +4 more
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Construction of probabilistic event trees for eruption forecasting at Sinabung volcano, Indonesia 2013-14 [PDF]
, 2019 Eruptions of Sinabung volcano, Indonesia have been ongoing since 2013. Since that time, the character of eruptions has changed, from phreatic to phreatomagmatic to magmatic explosive eruptions, and from production of a lava dome that collapsed to a ...
2013 VDAP team +10 more
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Rheological behaviour of pyroclastic debris flow [PDF]
WIT Transactions on Engineering Sciences, 2010 The pyroclastic soils that cover the mountains of the Campania region in Italy are usually unsaturated and collapse due to rainfall infiltration triggering landslides. The evolution of these soils after collapse is not well understood. Indeed, their post-failure behaviour may be “solid-like” or “fluid-like”, depending on causes that are not well known.
SCOTTO DI SANTOLO, ANNA +2 more
openaire +3 more sources
Pyroclastic Flow Deposits and InSAR: Analysis of Long-Term Subsidence at Augustine Volcano, Alaska
Remote Sensing, 2016 Deformation of pyroclastic flow deposits begins almost immediately after emplacement, and continues thereafter for months or years. This study analyzes the extent, volume, thickness, and variability in pyroclastic flow deposits (PFDs) on Augustine ...
David B. McAlpin +4 more
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Physical and mechanical characterization of the soft pyroclastic rocks forming the Orvieto cliff [PDF]
, 2002 The paper describes the results of laboratory and in situ investigations carried out on weak pyroclastic materials which could be encountered during engineering activities in volcanic regions.
RIBACCHI, Renato +2 more
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