Results 21 to 30 of about 45,330 (119)

Will subglacial rhyolite eruptions be explosive or intrusive? Some insights from analytical models. [PDF]

open access: yes, 2007
Simple analytical models of subglacial eruptions are presented, which simulate evolving subglacial cavities and volcanic edifices during rhyolitic eruptions beneath temperate glaciers.
Gilbert, Jennie S.   +2 more
core   +5 more sources

Models of ice melting and edifice growth during subglacial basaltic eruptions. [PDF]

open access: yes, 2007
Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities.
Tuffen, Hugh
core   +4 more sources

Volcanic and sedimentary processes in phreatomagmatic volcanoes [PDF]

open access: yes, 1982
Phreatomagmatic volcanoes form when ascending magma explosively interacts with surface or groundwater at shallow depths. Three types of phreatomagmatic activity are recognised- phreaticp phreatomagmatic (s. s. ) and surtseyan - based on the degree of
Leys, C.A., Leys, Clyde Andrew
core   +7 more sources

Shallow resistivity structure around the 2018 craters of Mt. Motoshirane of Kusatsu-Shirane Volcano, Japan, revealed by audio-frequency magnetotellurics

open access: yesEarth, Planets and Space, 2023
In 2018, a phreatic eruption occurred at Mt. Motoshirane, a pyroclastic cone group of the Kusatsu-Shirane Volcano in central Japan. The eruption was abrupt, and no signs of volcanic activity have been observed in recent years, in contrast to the other ...
Asami Honda   +6 more
doaj   +1 more source

Heat source of the 2014 phreatic eruption of Mount Ontake, Japan [PDF]

open access: yesBulletin of Volcanology, 2020
AbstractWe present petrological evidence of the shallow magmatic processes that may have supplied heat and gas to the eruption of Mount Ontake, Japan, on 27 September 2014, which resulted in 63 fatalities. Ash from the eruption comprises primarily hydrothermally altered, white-toned rock fragments. However, the ash contains trace amounts (< 0.7 wt%)
Isoji Miyagi   +4 more
openaire   +1 more source

The sequence of the 2017–2018 eruptions and seismo-acoustic activity at Kirishima volcano group

open access: yesEarth, Planets and Space, 2023
Kirishima volcano consists of more than 20 eruptive centers. Among them, Shinmoe-dake had magmatic eruptions in October 2017 and March 2018. Subsequently, another active cone, Iwo-yama, had phreatic eruptions in April 2018.
Mie Ichihara   +6 more
doaj   +1 more source

European climate response to tropical volcanic eruptions over the last half millennium [PDF]

open access: yes, 2007
We analyse the winter and summer climatic signal following 15 major tropical volcanic eruptions over the last half millennium based on multi-proxy reconstructions for Europe. During the first and second post-eruption years we find significant continental
Tett, S. F. B.   +5 more
core   +2 more sources

Locating hydrothermal fluid injection of the 2018 phreatic eruption at Kusatsu-Shirane volcano with volcanic tremor amplitude

open access: yesEarth, Planets and Space, 2021
Kusatsu-Shirane volcano hosts numerous thermal springs, fumaroles, and the crater lake of Yugama. Hence, it has been a particular study field for hydrothermal systems and phreatic eruptions.
Taishi Yamada   +8 more
doaj   +1 more source

Phreatic eruption dynamics derived from deposit analysis: a case study from a small, phreatic eruption from Whakāri/White Island, New Zealand [PDF]

open access: yesEarth, Planets and Space, 2019
Abstract On 27 April 2016, White Island erupted in a multi-pulse, phreatic event that lasted for ~ 40 min. Six, variably sized pulses generated three ballistic ejections and at least one pyroclastic surge out of the inner crater and onto the main crater floor.
Geoff Kilgour   +5 more
openaire   +3 more sources

Magma Chambers and Meteoric Fluid Flows Beneath the Atka Volcanic Complex (Aleutian Islands) Inferred from Local Earthquake Tomography

open access: yesGeosciences, 2020
Atka is a subduction-related volcanic island located in the central part of Aleutian Arc. The northeastern part of this island forms the Atka Volcanic Complex (AVC), which is built as a relict shield volcano of a circular shape overlain by several active
Ivan Koulakov   +2 more
doaj   +1 more source

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