Maars to calderas: end-members on a spectrum of explosive volcanic depressions [PDF]
Frontiers in Earth Science, 2015 We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note – we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not ...
Danilo M. Palladino +3 more
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Deep sea explosive eruptions may be not so different from subaerial eruptions. [PDF]
Sci Rep, 2020 AbstractThe dynamics of deep sea explosive eruptions, the dispersion of the pyroclasts, and how submarine eruptions differ from the subaerial ones are still poorly known due to the limited access to sea environments. Here, we analyze two ash layers representative of the proximal and distal deposits of two submarine eruptions from a 500 to 800 m deep ...
Iezzi G +8 more
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Reconciling bubble nucleation in explosive eruptions with geospeedometers [PDF]
Nature Communications, 2021 The authors simulate bubble nucleation in silica-rich magma with conditions appropriate for Plinian eruptions. They demonstrate that the gap between decompression rate estimates from bubble number density and independent geospeedometers can be largely ...
Sahand Hajimirza +2 more
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Precipitation induced by explosive volcanism on Mars and its implications for unexpected equatorial ice [PDF]
Nature CommunicationsExplosive volcanism occurred on Mars during its early history (Noachian–Hesperian; ~4.1–3.0 Ga). Because of Mars’ cold atmospheric temperatures, water released from explosive eruptions may precipitate as ice or ice-ash aggregates.
Saira S. Hamid +2 more
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Highly explosive basaltic eruptions driven by CO2 exsolution [PDF]
Nature Communications, 2021 Mechanisms that drive highly explosive eruptions of low-viscosity magmas, such as at Sunset Crater volcano, remain uncertain. Here, the authors present evidence for an exsolved CO2 phase ~15 km beneath Sunset Crater that was the critical driver of rapid ...
Chelsea M. Allison +2 more
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Understanding and forecasting sudden explosive eruptions. [PDF]
Bull VolcanolAbstract Explosive eruptions of VEI ≤ 3 commonly occur with few warning signs. Such eruptions can be magmatic, phreatomagmatic, or phreatic in nature, and they are driven by the catastrophic release of pressurized gas. Our challenge is how to better forecast these eruptions and better understand them with existing and new tools.
Stix J, de Moor JM, Aiuppa A.
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Explosive volcanic eruptions can act as carbon sinks [PDF]
Nature CommunicationsVolcanic soils, covering only ~1% of the Earth’s land, store over 5% of the global soil organic C stock. The frequent burial of these soils by tephra fallout from explosive volcanic eruptions is a critical but poorly quantified C storage process in soils
Pierre Delmelle +3 more
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In flight fragmentation reduces bomb size range and hazard during explosive volcanic eruptions [PDF]
Scientific ReportsCoarse, molten fragments of low-viscosity magma (volcanic bombs) that are ejected during explosive volcanic eruptions represent a source of hazard and a record of past eruptions.
C. Biensan +9 more
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Eruption Sequences and Characteristics of Weizhou Island Volcano, Guangxi Province, South of China
Frontiers in Earth Science, 2021 Weizhou island, located in the north margin of the South China Sea (SCS), is characterized by multi-stage volcanism, several eruption styles and eruption craters, and is also the youngest Quaternary volcanic island in China.
Hongmei Yu +10 more
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The activity of Chikurachki volcano (Paramushir Isl., Northern Kuriles) in January–February of 2022 [PDF]
Геосистемы переходных зон, 2022 The article considers a short-term moderate explosive eruption of Chikurachki volcano (Paramushir Isl.) on the basis of satellite data. In the period from January 30 to February 3, 2022, at least 8 steam-gas and ash emissions to a height of 2.5–5 km a.s ...
Artem V. Degterev, Marina V. Chibisova
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