Results 81 to 90 of about 26,142 (273)

Biased Volcanic Hazard Assessment Due to Incomplete Eruption Records on Ocean Islands: An Example of Sete Cidades Volcano, Azores

open access: yesFrontiers in Earth Science, 2019
It is well known that explosive volcanic eruptions pose serious hazards to local communities and may have worldwide impacts. However, the products of explosive eruptions on volcanic ocean islands are almost inevitably incompletely preserved as a ...
Ulrich Kueppers   +8 more
doaj   +1 more source

Role of volatiles in highly explosive basaltic eruptions

open access: yesCommunications Earth & Environment, 2022
The increase in mass eruption rate due to the presence of volatiles in explosive basaltic eruptions is greatly dependent on the type of volatile, according to numerical modelling. CO2 has a very limited effect unless injected from an external source.
Giuseppe La Spina   +4 more
doaj   +1 more source

A model for large-scale volcanic plumes on Io: Implications for eruption rates and interactions between magmas and near-surface volatiles. [PDF]

open access: yes, 2002
Volcanic plumes deposit magmatic pyroclasts and SO2 frost on the surface of Io. We model the plume activity detected by Galileo at the Pillan and Pele sites from 1996 to 1997 assuming that magmatic eruptions incorporate liquid SO2 from near-surface ...
Cataldo, Enzo   +3 more
core   +1 more source

Magmatic volatiles in explosive rhyolitic eruptions

open access: yesGeophysical Research Letters, 1981
Obsidian clasts in rhyolitic tephra deposits preserve preemption magmatic volatile contents, providing a direct means for determining the volatile content of explosively erupted magmas. Small to moderate volume Plinian eruptions (10−3 to 10−1 km³) appear to be driven by 0.5‐1.0 wt.% volatiles, consisting dominantly of H2O with minor CO2.
J. C. Eichelberger, H. R. Westrich
openaire   +1 more source

Delivery of Surgical Care by Local Actors in Chronic Conflict Settings: The Example of Bor State Hospital, South Sudan

open access: yes
World Journal of Surgery, EarlyView.
Majok Philips Matiop   +3 more
wiley   +1 more source

European Green Deal and Geopoliticisation of Trade: A Poststructuralist Discourse Analysis of EU Agricultural Trade Policy

open access: yesJCMS: Journal of Common Market Studies, EarlyView.
Abstract Drawing on Laclau and Mouffe's poststructuralist discourse theory, this article critically examines the von der Leyen Commission's agricultural trade policy under the European Green Deal. It elucidates the shift from a dominant neoliberal trade logic to open strategic autonomy, positioning agricultural trade as a foreign policy instrument. The
Mari Carlson
wiley   +1 more source

Periodontitis and Periodontal Conditions in Systemically Healthy Children and Adolescents

open access: yesJournal of Clinical Periodontology, EarlyView.
ABSTRACT Objective To answer the PICoS question ‘in systemically healthy children and adolescents (Population), what are the main features of periodontitis, necrotising periodontal diseases (NPD) and other periodontal conditions (periodontal abscesses, endo‐periodontal lesions, traumatic occlusal forces, prosthesis‐ and tooth‐related factors ...
Inbar Eshkol‐Yogev   +5 more
wiley   +1 more source

Shallow magma diversions during explosive diatreme-forming eruptions

open access: yesNature Communications, 2018
Shallow magmatic feeder systems in monogenetic volcanic fields may determine how a volcano erupts. Here, the authors use numerical modeling to show that explosive excavation and infilling of eruptive craters affects local stress states, with feedbacks ...
Nicolas Le Corvec   +2 more
doaj   +1 more source

Vectors and Vector‐Borne Diseases: Biology, Epidemiology and Integrated Control Strategies

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Vector‐Borne Diseases (VBDs), transmitted by arthropods such as mosquitoes, ticks, fleas and sandflies, represent a significant threat to global health. These diseases can be caused by a variety of pathogens, including bacteria, viruses, protozoa, and helminths.
Roberta Rinaldi   +4 more
wiley   +1 more source

Large explosive eruptions may be dominated by pyroclastic flows instead of buoyant plumes: insights from a global data compilation

open access: yesJournal of Applied Volcanology
The dynamics of Earth’s largest, most voluminous eruptions (≥ 100 km3 ejecta; VEI 7) are poorly understood. Here, we explore the question of whether these very large eruptions can be treated as scaled-up versions of moderate volume historical eruptions ...
Alice R. Paine, Fabian B. Wadsworth
doaj   +1 more source

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