Results 21 to 30 of about 320 (168)

Shallow hydrothermal reservoir inferred from post-eruptive deflation at Ontake Volcano as revealed by PALSAR-2 InSAR

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

Waveform inversion of the ultra-long-period seismic event associated with ground tilt motion during an eruption of Mount Kusatsu–Shirane, Japan, on January 23, 2018

Earth, Planets and Space, 2022
We conducted waveform inversions of an ultra-long-period (~ 240-s) event associated with the phreatic eruption of Mount Kusatsu–Shirane on January 23, 2018. We used broadband seismic and tilt records from three stations surrounding the eruption site. The
Ryohei Takahashi, Yuta Maeda, Toshiki Watanabe   +2 more
doaj   +1 more source

Lahar characteristics as a function of triggering mechanism at a seasonally snow-clad volcano: contrasting lahars following the 2014 phreatic eruption of Ontake Volcano, Japan

Earth, Planets and Space, 2018
In association with the September 2014 phreatic eruption (VEI 1–2) at Ontake Volcano, a syn-eruptive and two post-eruptive lahars occurred in the Akagawa–Nigorigawa River, southern flank of the volcano.
Kyoko S. Kataoka, Takane Matsumoto, Takeshi Saito, Katsuhisa Kawashima, Yoshitaka Nagahashi, Tsutomu Iyobe, Akihiko Sasaki, Keisuke Suzuki   +7 more
doaj   +1 more source

Precursory ground deformation of the 2018 phreatic eruption on Iwo-Yama volcano, revealed by four-dimensional joint analysis of airborne and spaceborne InSAR

Earth, Planets and Space, 2020
We present detailed maps of local-scale 3D deformation preceding the 2018 phreatic eruption at Iwo-yama volcano (south of Kyushu Island, Japan), using a combination of airborne and spaceborne Interferometric Synthetic Aperture Radar (InSAR) data.
Shohei Narita, Taku Ozawa, Yosuke Aoki, Masanobu Shimada, Masato Furuya, Youichiro Takada, Makoto Murakami   +6 more
doaj   +1 more source

Precursory tilt changes associated with a phreatic eruption of the Hakone volcano and the corresponding source model

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, Yohei Yukutake, Yuichi Morita, Shin’ichi Sakai, Kazuhiro Itadera, Kazuya Kokubo   +5 more
doaj   +1 more source

Kusatsu-Shirane volcano eruption on January 23, 2018, observed using JMA operational weather radars

Earth, Planets and Space, 2021
A phreatic eruption suddenly occurred at Motoshirane (Kusatsu-Shirane volcano, Japan) at 10:02 JST on January 23, 2018. A member of the Japan Self-Defense Force was killed by volcanic blocks during training in Motoshirane, and 11 people were injured by ...
Eiichi Sato
doaj   +1 more source

Temporal changes in inflation sources during the 2015 unrest and eruption of Hakone volcano, Japan

Earth, Planets and Space, 2018
Global navigation satellite system data from Hakone volcano, central Japan, together with GEONET data from the Geospatial Information Authority of Japan, were used to investigate the processes associated with the volcanic activity in 2015, which ...
Masatake Harada, Ryosuke Doke, Kazutaka Mannen, Kazuhiro Itadera, Mikio Satomura   +4 more
doaj   +1 more source

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

Earth, 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, Aika K. Kurokawa, Akihiko Terada, Wataru Kanda, Hideki Ueda, Hiroshi Aoyama, Takahiro Ohkura, Yasuo Ogawa, Toshikazu Tanada   +8 more
doaj   +1 more source

MOESM1 of Anatomy of phreatic eruptions

, 2019
Additional file 1. Spectrograms of harmonic tremor at White Island. Harmonic tremor recorded at White Island after a seismic quiescence of 20 min, and lasting for 8 h. a station WIZ b stations WSRZ. We used a window of 20 s without any overlap to create the spectrograms.
Caudron, Corentin, Taisne, Benoit, Neuberg, Jurgen, Jolly, Arthur, Christenson, Bruce, Lecocq, Thomas, Suparjan, Syahbana, Devy, Suantika, Gede   +8 more
openaire   +1 more source

Modeling the priming mechanisms of phreatic eruptions: challenges and possible solutions

, 2023
To the present date, no phreatic eruption has been successfully forecasted, as this kind of eruption lacks clear and univocal precursory signals. Understanding how deep magmatic gas and heat fluxes interact with groundwater systems and prime phreatic eruptions is thus of pivotal importance.
Stocchi, M., Costa, A., Sulpizio, R., Folch, A., Houzeaux, G.   +4 more
openaire   +3 more sources