Results 21 to 30 of about 308 (170)

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

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

Reappraisal of volcanic seismicity at the Kirishima volcano using machine learning

open access: yesEarth, Planets and Space, 2023
Volcanic earthquakes provide essential information for evaluating volcanic activity. Because volcanic earthquakes are often characterized by swarm-like features, conventional methods using manual picking require considerable time to construct seismic ...
Yohei Yukutake, Ahyi Kim, Takao Ohminato
doaj   +1 more source

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

Response of a hydrothermal system to escalating phreatic unrest: the case of Turrialba and Irazú in Costa Rica (2007–2012)

open access: yesEarth, Planets and Space, 2021
This study presents the first hydrogeochemical model of the hydrothermal systems of Turrialba and Irazú volcanoes in central Costa Rica, manifested as thermal springs, summit crater lakes, and fumarolic degassing at both volcanoes.
D. Rouwet   +9 more
doaj   +1 more source

MOESM1 of Anatomy of phreatic eruptions

open access: yes, 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   +8 more
openaire   +1 more source

Analysis of the intermittent volcanic tremor observed at Mt. Etna, Sicily during March-May 1987

open access: yesAnnals of Geophysics, 1996
Volcanic activity at the summit craters of Mt. Etna includes phreatic eruptions which jeopardize tourists and other people who sporadically approach the top of the volcano. To date no appreciable precursors of this kind of activity are known.
A. Leotta   +3 more
doaj   +1 more source

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

open access: yes, 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.   +4 more
openaire   +3 more sources

Revealing the Hydrothermal System of La Soufrière Volcano (Guadeloupe) Through Nodal Ambient Noise Tomography

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract La Soufri'ere de Guadeloupe is an active volcano of the Lesser Antilles Volcanic Arc. Its last eruption halted in 1977, yet hydrothermal activity has increased over recent years, raising summit instability hazards. The link between hydrothermal fluids and detachment landslide surfaces is well established and exacerbated by inflation ...
Elliot Amir Jiwani‐Brown   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy