Results 1 to 10 of about 110 (67)

Groundwater Interacting at Depth With Hot Plastic Magma Triggers Phreatic Eruptions at Yugama Crater Lake of Kusatsu-Shirane Volcano (Japan)

Frontiers in Earth Science, 2021
Interpreting the triggering mechanisms for phreatic eruptions is a key to improving the hazard assessment of crater lakes. Yugama Crater Lake at Kusatsu-Shirane volcano, Japan, is the site of frequent phreatic eruptions with the recent eruptions in 1982 ...
Akihiko Terada, Muga Yaguchi
exaly   +3 more sources

Understanding and forecasting phreatic eruptions driven by magmatic degassing

Earth, Planets and Space, 2018
This paper examines phreatic eruptions which are driven by inputs of magma and magmatic gas. We synthesize data from several significant phreatic systems, including two in Costa Rica (Turrialba and Poás) which are currently highly active and hazardous ...
John Stix, J Maarten de Moor, De Moor J Maarten   +2 more
exaly   +3 more sources

Phreatic eruptions and deformation of Ioto Island (Iwo-jima), Japan, triggered by deep magma injection

Earth, Planets and Space, 2018
On Ioto Island (Iwo-jima), 44 phreatic eruptions have been recorded since 1889, when people began to settle there. Four of these eruptions, after the beginning of continuous observation by seismometers in 1976, were accompanied by intense seismic ...
Hideki Ueda, Toshikazu Tanada
exaly   +3 more sources

Hidden pressurized fluids prior to the 2014 phreatic eruption at Mt Ontake

Nature Communications, 2022
Phreatic volcanic eruptions can be unexpected and devastating. Here the authors, using seismic-based methodologies, find that pressurized fluids accumulated 5 months before the deadly phreatic eruption at Mt Ontake; a period previously considered as ...
Corentin Caudron, Yosuke Aoki, Thomas Lecocq, Raphael De Plaen, Jean Soubestre, Aurelien Mordret, Leonard Seydoux, Toshiko Terakawa   +7 more
doaj   +1 more source

Rare Earth Elements Variations in a Hyperacid Crater Lake and Their Relations With Changes in Phreatic Activity, Physico-Chemical Parameters, and Chemical Composition: The Case of Poás Volcano (Costa Rica)

Frontiers in Earth Science, 2022
Decades of geochemical monitoring at active crater lakes worldwide have confirmed that variations in major elements and physico-chemical parameters are useful to detect changes in volcanic activity.
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Lorenzo Brusca, Loic Peiffer, Gilles Levresse, Sergio Bellomo   +12 more
doaj   +1 more source

The 2019–2020 volcanic eruption of Late’iki (Metis Shoal), Tonga

Scientific Reports, 2022
Late’iki (previously known as Metis Shoal) is a highly active volcano in the Tofua arc with at least four temporary island-building eruptions and one submarine eruption in the last 55 years.
I. A. Yeo, I. M. McIntosh, S. E. Bryan, K. Tani, M. Dunbabin, D. Metz, P. C. Collins, K. Stone, M. S. Manu   +8 more
doaj   +1 more source

Phreatic volcanic eruption preceded by observable shallow groundwater flow at Iwo-Yama, Kirishima Volcanic Complex, Japan

Communications Earth & Environment, 2022
Electric field changes generated by the movement of shallow groundwater can be regarded as a precursor to phreatic volcanic eruptions, according to near-vent geophysical observations of Iwo-Yama volcano in the Kirishima complex, Japan.
Koki Aizawa, Dan Muramatsu, Takeshi Matsushima, Takao Koyama, Makoto Uyeshima, Shigeru Nakao   +5 more
doaj   +1 more source

Fluid-mineral dynamics at the Rincón de la Vieja volcano—hydrothermal system (Costa Rica) inferred by the study of major, minor and rare earth elements in the hyperacid crater lake

Frontiers in Earth Science, 2023
Volcanic lakes are complex natural systems and their chemical composition is related to a myriad of processes. The chemical composition of major, minor, Rare Earth Elements (REE) and physico-chemical parameters at the hyperacid crater lake of Rincón de ...
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Gilles Levresse, Loic Peiffer, Loic Peiffer, Carmine Apollaro, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Benedetto Schiavo, Thomas Gunter Kretzschmar, Lorenzo Brusca   +15 more
doaj   +1 more source

Coeruptive and posteruptive crustal deformation associated with the 2018 Kusatsu-Shirane phreatic eruption based on PALSAR-2 time series analysis

Earth, Planets and Space, 2020
Coeruptive deformation helps to interpret physical processes associated with volcanic eruptions. Because phreatic eruptions cause small, localized coeruptive deformation, we sometimes fail to identify plausible deformation signals.
Yuji Himematsu, Taku Ozawa, Yosuke Aoki
doaj   +1 more source

A quest for unrest in multiparameter observations at Whakaari/White Island volcano, New Zealand 2007–2018

Earth, Planets and Space, 2021
The Whakaari/White Island volcano, located ~ 50 km off the east coast of the North Island in New Zealand, has experienced sequences of quiescence, unrest, magmatic and phreatic eruptions over the last decades.
Corentin Caudron, Társilo Girona, Arthur Jolly, Bruce Christenson, Martha Kane Savage, Roberto Carniel, Thomas Lecocq, Ben Kennedy, Ivan Lokmer, Alexander Yates, Ian Hamling, Iseul Park, Geoff Kilgour, Agnès Mazot   +13 more
doaj   +1 more source