Results 41 to 50 of about 132,852 (226)
Permeability-control on volcanic hydrothermal system: case study for Mt. Tokachidake, Japan, based on numerical simulation and field observation [PDF]
, 2017 We investigate a volcanic hydrothermal system by using numerical simulation with three key observables as reference: the magnetic total field, vent temperature, and heat flux. We model the shallow hydrothermal system of Mt. Tokachidake, central Hokkaido,
Nobuo Matsushima +3 more
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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
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 +8 more
doaj +1 more source
Reappraisal of volcanic seismicity at the Kirishima volcano using machine learning
Earth, 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
Lava lakes and shallow level magmatic feeding systems of mafic volcanoes of an ocean island: Ambrym, Vanuatu (New Hebrides), South Pacific [PDF]
, 2006 Ambrym is an active volcanic island with 2 major vent complexes; Marum and Benbow. These vent complexes are continuously active over at least the past two thousands of years.
Cronin, Shane J., Nemeth, Karoly
core +2 more sources
Geosciences, 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
Earth, 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
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.
Métaxian, Jean-Philippe +10 more
openaire +3 more sources
The Basaltic Monogenetic Volcanic Field of the Bakony–Balaton UNESCO Global Geopark, Hungary: From Science to Geoeducation and Geotourism [PDF]
Geoconservation Research, 2023 As a part of the long-standing volcanism of the Carpathian–Pannonian Region, a basaltic monogenetic volcanic field developed here from 8–2.3 Ma. This is a specific type of volcanism, when mostly a small volume of magma erupts intermittently and always in
Szabolcs Harangi, Barnabás Korbély
doaj +1 more source
Volcanic Unrest and Pre-eruptive Processes: A Hazard and Risk Perspective [PDF]
, 2017 Volcanic unrest is complex and capable of producing multiple hazards that can be triggered by a number of different subsurface processes. Scientific interpretations of unrest data aim to better understand (i) the processes behind unrest and their ...
Barclay, Jennifer +2 more
core +3 more sources