Results 11 to 20 of about 16,412 (215)

Permian Large Igneous Provinces and Their Paleoenvironmental Effects

open access: yesGeophysical Monograph Series, Page 417-434., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley  

+7 more sources

New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows [PDF]

open access: yesSolid Earth, 2012
A granular multiphase model has been used to evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents.
S. Lepore, C. Scarpati
doaj   +1 more source

High Preservation Potential Volcaniclastic Sedimentation in the Serravallian Sequence of the Amantea Basin (Coastal Chain, North-Western Calabria)

open access: yesGeosciences, 2021
Evidence of volcaniclastic sedimentation occurs in the first depositional sequence of the sedimentary succession of the Amantea Basin. Volcaniclastic deposits are intercalated in the upper part of a sandstone formation and these show a maximum thickness ...
Cannata Chiara Benedetta   +4 more
doaj   +1 more source

Vegetation dieback as a proxy for temperature within a wet pyroclastic density current: A novel experiment and observations from the 6th of August 2012 Tongariro eruption [PDF]

open access: yes, 2014
The 6th of August 2012 eruption of Te Maari (Mt Tongariro, New Zealand) generated wet pyroclastic density currents (PDCs) which caused widespread dieback of vegetation (singed, brown foliage) in their path.
Bylsma, Rebecca Johanna   +5 more
core   +2 more sources

Directed Volcanic Blast as a Tragedy of October 26Th, 2010 at Merapi Volcano, Central Java

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v8i3.163Merapi is an active strato volcano located in Central Java. This volcano is regarded as the most active and most dangerous volcano in Indonesia.
Igan S. Sutawidjaja
doaj   +1 more source

A thermodynamical model for rainfall-triggered volcanic dome collapse [PDF]

open access: yes, 2004
Dome-forming volcanic eruptions typically involve the slow extrusion of viscous lava onto a steep-sided volcano punctuated by collapse and the generation of hazardous pyroclastic flows.
Adrian J. Matthews   +14 more
core   +1 more source

A Unifying Model for Pyroclastic Surge Genesis and Pyroclastic Flow Fluidization

open access: yesGeophysical Research Letters, 2022
AbstractPyroclastic density currents (PDCs) are hot and fast ground‐hugging mixtures of volcanic fragments and gases, which represent a major threat to people living near explosive volcanoes. Mechanisms causing the separation into the concentrated (the pyroclastic flow) and dilute (the pyroclastic surge) layers, as well as the mechanism causing their ...
Kelfoun, Karim, Gueugneau, Valentin
openaire   +2 more sources

Long-term volcanic hazard assessment on El Hierro (Canary Islands) [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2014
Long-term hazard assessment, one of the bastions of risk-mitigation programs, is required for land-use planning and for developing emergency plans.
L. Becerril   +5 more
doaj   +1 more source

Monitoring SO2 emission at the Soufriere Hills Volcano: implications for changes in erruptive conditions [PDF]

open access: yes, 1998
FLWINinfo:eu-repo/semantics ...
A. J. H. Maciejewski   +31 more
core   +1 more source

Abrasion in pyroclastic flows [PDF]

open access: yesGeologische Rundschau, 1992
The relative size of glass rims coating crystals in the matrix ash provides a semi-quantitative measure of abrasion of ash grains in pyroclastic flows. Median abrasion indices (= areacrystal / areaglass rim) are 8.4 to 18.5 in Laacher See pyroclastic flow units but only 4 to 6.3 in assocciated fallout, showing stronger abrasion of ash particles in the ...
Schmincke, H.-U., Freundt, A.
openaire   +2 more sources

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