Results 51 to 60 of about 304,697 (314)

The frequency of explosive volcanic eruptions in Southeast Asia [PDF]

Bulletin of Volcanology, 2015
There are ~750 active and potentially active volcanoes in Southeast Asia. Ash from eruptions of volcanic explosivity index 3 (VEI 3) and smaller pose mostly local hazards while eruptions of VEI ≥ 4 could disrupt trade, travel, and daily life in large parts of the region. We classify Southeast Asian volcanoes into five groups, using their morphology and,
Kyle Bradley, Christopher G. Newhall, Patrick L. Whelley, Patrick L. Whelley   +3 more
openaire   +3 more sources

Multi-stage volcanic island flank collapses with coeval explosive caldera-forming eruptions

Scientific Reports, 2018
Volcanic flank collapses and explosive eruptions are among the largest and most destructive processes on Earth. Events at Mount St. Helens in May 1980 demonstrated how a relatively small (300 km3), but can also occur in complex multiple stages.
James E. Hunt, Michael Cassidy, Peter J. Talling   +2 more
doaj   +1 more source

Influence of hydrothermal recharge on the evolution of eruption styles and hazards during the 2018–2019 activity at Kuchinoerabujima Volcano, Japan

Earth, Planets and Space, 2022
The activity of the 2018–2019 eruption of Kuchinoerabujima Volcano in Japan changed from continuous ejection of ash-laden plumes between October 21 and the middle of December, to intermittent explosive activity accompanied by several pyroclastic density ...
Yusuke Minami, Keiko Matsumoto, Nobuo Geshi, Hiroshi Shinohara   +3 more
doaj   +1 more source

Infrasonic Early Warning System for Explosive Eruptions [PDF]

Journal of Geophysical Research: Solid Earth, 2018
AbstractExplosive volcanic eruptions can eject large amounts of ash into the atmosphere, posing a serious threat to populations living near the volcano. The abrupt occurrence of such events requires a rapid response and proper volcanic hazard evaluation.
Sébastien Valade, Riccardo Genco, Emanuele Marchetti, Maurizio Ripepe, Dario Delle Donne, Dario Delle Donne, Lorenzo Innocenti, Giorgio Lacanna   +7 more
openaire   +2 more sources

European climate response to tropical volcanic eruptions over the last half millennium [PDF]

, 2007
We analyse the winter and summer climatic signal following 15 major tropical volcanic eruptions over the last half millennium based on multi-proxy reconstructions for Europe. During the first and second post-eruption years we find significant continental
Adams, Ammann, Ammann, Angell, Bradley, Briffa, Brönnimann, C. Casty, Casty, Crowley, Crowley, Dai, E. M. Fischer, E. Zorita, Gillett, Graf, Groisman, H. Wanner, Hegerl, J. Luterbacher, Jones, Kelly, Kirchner, Kodera, Luterbacher, Mann, Newhall, Panofsky, Pauling, Písek, Robock, Robock, Robock, Robock, Rutherford, S. F. B. Tett, Sear, Shindell, Shindell, Shindell, Simkin, Stenchikov, Stenchikov, Xoplaki, Yalcin, Yoshimori, Zhao   +46 more
core   +1 more source

Activation of the Sarychev Peak volcano in 2020–2021 (Matua Isl., the Central Kuril Islands) [PDF]

Геосистемы переходных зон, 2021
This publication, based on remote sensing data, examines the features of the effusive eruption of the Sarychev Peak volcano (Matua Isl., the Central Kuril Islands), which took place from December 2020 till February 2021.
Artem V. Degterev, Marina V. Chibisova
doaj   +1 more source

SO₂ emissions from basaltic eruptions, and the excess sulfur issue [PDF]

, 2004
Volcanic SO2 can affect the Earth's environment. Where no direct measurements of SO2 in the atmosphere are available, a petrologic method of assessing sulfur release from the magma must be used.
Blake, S., Kreuger, A.J., Self, S., Sharma, K.   +3 more
core   +1 more source

Ash aggregation in explosive volcanic eruptions [PDF]

Geophysical Research Letters, 2013
Eruption dynamics are sensitive to ash aggregation, and aggregates are commonly found in eruptive deposits. While ash dispersal and associated hazards are sensitive to aggregation, few experiments have been conducted on this phenomena using natural materials across the diverse range of conditions expected in volcanic flows. We have isolated two regimes,
A. Shaikh, Josef Dufek, J. W. Telling
openaire   +2 more sources

Analysis of the Alaska Volcano Observatory's Response Time to Volcanic Explosions-1989 to 2016

Frontiers in Earth Science, 2018
A major goal of volcano monitoring is the rapid identification of volcanic explosions and subsequent warning of associated hazards. Between 1988 and 2016 the Alaska Volcano Observatory (AVO) responded to at least 54 separate volcanic eruptions.
John A. Power, Cheryl E. Cameron
doaj   +1 more source

Deep Magma Transport Control on the Size and Evolution of Explosive Volcanic Eruptions

Frontiers in Earth Science, 2021
Explosive eruptions are the surface manifestation of dynamics that involve transfer of magma from the underground regions of magma accumulation. Evidence of the involvement of compositionally different magmas from different reservoirs is continuously ...
Simone Colucci, Paolo Papale
doaj   +1 more source