Results 31 to 40 of about 2,078 (215)

A re-assessment of historical records pertaining to the activity of Mt. Baekdu (Paektu, Tianchi) volcano

open access: yesGeoscience Letters, 2023
This study re-assesses the historical records pertaining to the activity of Mt. Baekdu according to volcanic phenomena. We categorized volcanic phenomena into five categories: rumbling, atmospheric abnormality, ash rain, ash cloud and phenomenon ...
Sung-Hyo Yun   +3 more
doaj   +1 more source

Eruption style transition during the 2017–2018 eruptive activity at the Shinmoedake volcano, Kirishima, Japan: surface phenomena and eruptive products

open access: yesEarth, Planets and Space, 2023
Recent eruptions of the Shinmoedake volcano, Japan, have provided a valuable opportunity to investigate the transition between explosive and effusive eruptions. In October 2017, phreatic/phreatomagmatic explosions occurred.
Fukashi Maeno   +7 more
doaj   +1 more source

Magmatic Processes at La Soufrière de Guadeloupe: Insights From Crystal Studies and Diffusion Timescales for Eruption Onset

open access: yesFrontiers in Earth Science, 2021
Signals of volcanic unrest do not usually provide insights into the timing, size and style of future eruptions, but detailed analysis of past eruptions may uncover patterns that can be used to understand future eruptive behavior.
Abigail Metcalfe   +11 more
doaj   +1 more source

Pyrrhotite oxidation as a proxy for thermal structure of eruption clouds: A comparative study of Plinian and Vulcanian eruptions of Asama and Sakurajima volcanoes, Japan

open access: hybridJournal of Volcanology and Geothermal Research, 2019
Abstract Thermal expansion of a volcanic eruption cloud by entrainment of air is a primary control of its behavior. Oxidation of the pyroclasts in the eruption cloud can be an indicator of the degree of air entrainment and thermal disequilibrium during its development.
Keiko Matsumoto
openalex   +3 more sources

Extensive, water-rich magma reservoir beneath southern Montserrat [PDF]

open access: yes, 2011
South Soufriere Hills and Soufriere Hills volcanoes are two km apart at the southern end of the island of Montserrat, West Indies. Their magmas are distinct geochemically, despite these volcanoes having been active contemporaneously at 131-129 ka. We use
Edmonds, Marie   +4 more
core   +4 more sources

The 2019 Eruption Dynamics and Morphology at Ebeko Volcano Monitored by Unoccupied Aircraft Systems (UAS) and Field Stations

open access: yesRemote Sensing, 2020
Vulcanian explosions are hazardous and are often spontaneous and direct observations are therefore challenging. Ebeko is an active volcano on Paramushir Island, northern Kuril Islands, showing characteristic Vulcanian-type activity. In 2019, we started a
Thomas R. Walter   +4 more
doaj   +1 more source

Can vesicle size distributions assess eruption intensity during volcanic activity? [PDF]

open access: yesSolid Earth, 2013
We studied three-dimensional (3-D) vesicle size distributions by X-ray microtomography in scoria collected during the relatively quiescent Phase II of the April–May 2010 eruption at Eyjafjallajökull volcano, Iceland.
A. LaRue   +4 more
doaj   +1 more source

Forecasting explosions at Sinabung Volcano, Indonesia, based on SO2 emission rates

open access: yesFrontiers in Earth Science, 2022
Dome-building volcanic eruptions are often associated with frequent Vulcanian explosions, which constitute a substantial threat to proximal communities. One proposed mechanism driving such explosions is the sealing of the shallow volcanic system followed
Syegi Kunrat   +3 more
doaj   +1 more source

Pre-explosive conduit conditions of the 1997 Vulcanian explosions at Soufrière Hills Volcano, Montserrat: II. Overpressure and depth distributions [PDF]

open access: yes, 2011
International audienceA type example of Vulcanian eruptive dynamics is the series of 88 explosions that occurred between August and October 1997 at Soufrière Hills volcano on Montserrat Island.
Arbaret, Laurent   +3 more
core   +3 more sources

Strain field analysis on Montserrat (W.I.) as tool for assessing permeable flow paths in the magmatic system of Soufrière Hills Volcano [PDF]

open access: yes, 2014
Strain dilatometers have been operated on the volcanic island of Montserrat (West Indies) for more than a decade and have proven to be a powerful technique to approach short-term dynamics in the deformational field in response to pressure changes in the ...
Adilbirov   +62 more
core   +2 more sources

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