Results 21 to 30 of about 78,518 (194)
Direct dating of Quaternary phreatic maar eruptions by luminescence methods
Geology, 2011 The suitability of quartz optically stimulated luminescence (OSL) and feldspar infrared stimulated luminescence (IRSL) for the direct dating of phreatic eruptions was tested on examples from the Eifel Volcanic Field, Germany. The mean IRSL age of 11.6 ± 0.5 ka for Ulmener Maar Tephra is in excellent agreement with the independent age control (11 ± 0.1 ...
Preusser, Frank +2 more
openaire +4 more sources
Disaster risk analysis of Mount Bromo eruption after the 2015 eruption in Sukapura District
MATEC Web of Conferences, 2018 Mount Bromo is one of the most active volcanoes in East Java with a 4-5 year interval of the eruption. Its last eruption was in 2015 and is expected to erupt in 2020.
Rachmawati Turniningtyas Ayu +2 more
doaj +2 more sources
Recurrent patterns in fluid geochemistry data prior to phreatic eruptions
, 2016 Not all volcanic eruptions are magma-driven: the sudden evaporation and expansion of heated groundwater may cause phreatic eruptions, where the magma involvement is absent or negligible. Active crater lakes top some of the volcanoes prone to phreatic activity.
Rouwet, Dmitri +5 more
core +3 more sources
Modeling the priming mechanism of phreatic eruptions
Phreatic eruptions are non-magmatic explosions consisting in the sudden expansions of groundwater due to the input of hot magmatic ¿¿uids and heat. Although such eruptions are intrinsically less hazardous than magmatic eruptions (i.e. the energy released in the process is relatively low) the lack of clear and early precursory signals increases the ...
Stocchi, M. +5 more
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Phreatic and Hydrothermal Eruptions: From Overlooked to Looking Over [PDF]
Bulletin of Volcanology, 2022 AbstractOver the last decade, field investigations, laboratory experiments, geophysical exploration and petrological, geochemical and numerical modelling have provided insight into the mechanisms of phreatic and hydrothermal eruptions. These eruptions are driven by sudden flashing of ground- or hydrothermal water to steam and are strongly influenced by
Cristian Montanaro +8 more
openaire +1 more source
, 2020 raw data of a phreatic eruption recorded by 3 stations composing a small seismic antenne located close to Merapi ...
Jean-Philippe, M (via Mendeley Data) +1 more
core +2 more sources
Earth, Planets and Space, 2021 We estimate the mass and energy budgets for the 2018 phreatic eruption of Mt. Motoshirane on Kusatsu–Shirane volcano, Japan, based on data obtained from a network of eight tiltmeters and weather radar echoes.
Akihiko Terada +8 more
doaj +1 more source
Volcanic and sedimentary processes in phreatomagmatic volcanoes [PDF]
, 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 +6 more sources
Earth, Planets and Space, 2018 In 2014, a phreatic eruption occurred at the Ontake Volcano in Central Japan causing multiple deaths and missing persons. Interferometric Synthetic Aperture Radar data showed local-scale subsidence around the newly created eruptive vents after the ...
Shohei Narita, Makoto Murakami
doaj +1 more source
Heat source of the 2014 phreatic eruption of Mount Ontake, Japan [PDF]
Bulletin 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