Results 11 to 20 of about 74,306 (189)
Earth, Planets and Space, 2021 On January 23, 2018, a small phreatic eruption (VEI = 1) occurred at the Motoshirane Pyroclastic Cone Group in the southern part of Kusatsu-Shirane Volcano in central Japan.
Nobuko Kametani +10 more
doaj +2 more sources
Geophysical Research LettersA small phreatic eruption occurred on April 2018 Iwo‐yama, Kirishima volcanic complex, Japan. We estimated the change in the subsurface resistivity structure before and after the phreatic eruption by repeated magnetotelluric (MT) measurements.
K. Aizawa, N. Matsushima, Y. Matsunaga
doaj +2 more sources
Phreatic eruptions at crater lakes: occurrence statistics and probabilistic hazard forecast [PDF]
Journal of Applied Volcanology, 2017 Phreatic eruptions, although posing a serious threat to people in crater proximity, are often underestimated and have been comparatively understudied. The detailed eruption catalogue for Ruapehu Volcano (New Zealand) provides an exceptional opportunity to study the statistics of recurring phreatic explosions at a crater lake volcano.
Karen Strehlow +5 more
openaire +9 more sources
Migration of seismic activity associated with phreatic eruption at Merapi volcano, Indonesia [PDF]
Journal of Volcanology and Geothermal Research, 2020 Abstract Phreatic activity of Merapi started after nearly 2 years of quiescence following the October–November 2010 eruption which was the largest in more than 100 years. A dozen eruptions identified by visual and/or seismic observations took place between August 2012 and April 2014.
Corentin Caudron +2 more
exaly +4 more sources
Earth, Planets and Space, 2018 The 2015 unrest of the Hakone volcano in Japan, which began on April 26, generated earthquake swarms accompanied by long-term deformation. The earthquake swarm activity reached its maximum in mid-May and gradually calmed down; however, it increased again
Ryou Honda +5 more
doaj +2 more sources
Journal of Volcanology and Geothermal ResearchSteam-driven eruptions, such as phreatic and hydrothermal explosions, likely represent some of the most frequent eruptive styles at stratovolcanoes. However, deciphering their timing, dynamics, and underlying mechanisms from eruptive deposits remains a significant challenge, even when, although such deposits are thin, altered, poorly dispersed, and ...
Marco Pistolesi, Anna Gioncada
exaly +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 +4 more sources
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 +7 more sources
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 +3 more sources
Historical record of lahar related to phreatic or phreatomagmatic eruption
Journal of the Geological Society of Japan, 2017 Masayuki Sakagami, Masaru Kunitomo
exaly +3 more sources