Results 71 to 80 of about 820,554 (319)

Hindcasting Magma Reservoir Stability Preceding the 2008 Eruption of Okmok, Alaska

Geophysical Research Letters, 2019
Volcanic eruptions pose a significant and sometimes unpredictable hazard, especially at systems that display little to no precursory signals. For example, the 2008 eruption of Okmok volcano in Alaska notably lacked observable short‐term precursors ...
J. A. Albright, P. M. Gregg, Z. Lu, J. T. Freymueller   +3 more
doaj   +1 more source

On the use of plume models to estimate the flux in volcanic gas plumes

Nature Communications, 2021
Monitoring the flux of gas from volcanoes is a fundamental component of volcano monitoring programs and is used as a basis for eruption forecasting. Here, the authors present a new method using video images of volcanic gas plumes to measure the speed of ...
Julia Woitischek, Nicola Mingotti, Marie Edmonds, Andrew W. Woods   +3 more
doaj   +1 more source

Monitoring SO2 emission at the Soufriere Hills Volcano: implications for changes in erruptive conditions [PDF]

, 1998
FLWINinfo:eu-repo/semantics ...
A. J. H. Maciejewski, Allen, B. Darroux, Barclay, C. A. Gardner, C. M. M. Oppenheimer, Daag, Devine, G. E. Norton, Gerlach, Gerlach, Hammouya, Hirabayashi, I. M. Watson, J. Barclay, J. Stix, Luhr, M. A. Davies, Millán, Millán, Neuberg, Oppenheimer, P. Delmelle, P. W. Francis, Robertson, S. R. Young, Seigneur, Sparks, Stoiber, T. J. Casadevall, Wallace, Young   +31 more
core   +1 more source

Forecasting volcano eruption activity

, 2022
Volcanic activity monitoring typically are based on gas emissions, seismic activity, thermal anomalies, deformation and surface change. These events can be extracted by globally tracked observation data that span the electromagnetic spectrum. Orbital earth observation is generated by sensors focusing on different wavelength.
openaire   +1 more source

Better Forecasting for the Next Volcanic Eruption

Eos, 2015
The Eruptive Precursors project in Campi Flegrei, Italy, seeks to understand conditions leading to caldera eruptions.
ACOCELLA, Valerio, Chiodini, Giovanni
openaire   +3 more sources

Could Kı̄lauea's 2020 Post Caldera‐Forming Eruption Have Been Anticipated?

Geophysical Research Letters, 2022
In 2018 Kı̄lauea volcano erupted a decade's worth of basalt, given estimated magma supply rates, triggering caldera collapse. Yet, less than 2.5 years later Kı̄lauea re‐erupted. At the 2018 eruption onset, pressure within the summit reservoir was ∼20 MPa
Paul Segall, Kyle Anderson, Taiyi A. Wang   +2 more
doaj   +1 more source

Logarithmic Growth of Dikes From a Depressurizing Magma Chamber

Geophysical Research Letters, 2020
Dike propagation is an intrinsically multiphase problem, where deformation and fluid flow are intricately coupled in a fracture process. Here we perform the first fully coupled simulations of dike propagation in two dimensions, accounting for ...
Benjamin E. Grossman‐Ponemon, Elías R. Heimisson, Adrian J. Lew, Paul Segall   +3 more
doaj   +1 more source

Quantitatively Mapping Discolored Seawater around Submarine Volcanoes Using Satellite GCOM-C SGLI Data: A Case Study of the Krakatau Eruption in Indonesia in December 2018

GeoHazards, 2023
The final goal of this paper is to contribute to the difficult task of understanding and forecasting submarine volcanic eruption activity by proposing a method to quantify discolored water.
Yuji Sakuno, Sakito Hirao, Naokazu Taniguchi   +2 more
doaj   +1 more source

Magnetic Flux of EUV Arcade and Dimming Regions as a Relevant Parameter for Early Diagnostics of Solar Eruptions - Sources of Non-Recurrent Geomagnetic Storms and Forbush Decreases

, 2012
This study aims at the early diagnostics of geoeffectiveness of coronal mass ejections (CMEs) from quantitative parameters of the accompanying EUV dimming and arcade events.
A. A. Abunin, A. Belov, A. Taktakishvili, A. V. Belov, A.C. Sterling, A.C. Sterling, A.N. Zhukov, A.N. Zhukov, A.V. Belov, B. Schmieder, B. Vršnak, B. Vršnak, B.E. Wood, B.J. Thompson, B.J. Thompson, B.V. Jackson, B.V. Jackson, C.H. Mandrini, C.H. Mandrini, C.H. Miklenic, D. Tripathi, D.F. Webb, D.F. Webb, E.W. Cliver, G. Michalek, G. Siscoe, G. Siscoe, G.E. Brueckner, G.F. Krymskii, H. Song, H. Xie, H.S. Hudson, H.V. Cane, I. M. Chertok, I.G. Richardson, I.G. Richardson, I.G. Richardson, I.M. Chertok, I.M. Chertok, I.M. Chertok, I.M. Chertok, J. Qiu, J. Zhang, J. Zhang, J.-P. Delaboudinière, J.R. Lemen, J.T. Gosling, K. Marubashi, K.-H. Kim, L.K. Harra, M.L. Kaiser, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Lugaz, P. Dèmoulin, P.H. Scherrer, P.K. Manoharan, R.-S. Kim, S. Kahler, S. Yashiro, S.-M. Kang, S.E. Gibson, V. Bothmer, V. V. Grechnev, V. Yurchyshyn, V. Yurchyshyn, V. Yurchyshyn, Y. Liu, Y. Liu, Y. Liu, Y. Zhang, Y.M. Wang, Z. Švestka, Z.K. Smith   +76 more
core   +1 more source

Detecting volcanic sulfur dioxide plumes in the Northern Hemisphere using the Brewer spectrophotometer, other networks, and satellite observations [PDF]

, 2016
This paper demonstrates that SO 2 columnar amounts have significantly increased following the five largest volcanic eruptions of the past decade in the Northern Hemisphere.
Allaart, Marc, Amiridis, Vassilis, Balis, Dimitris, Dahlback, Arne, De Bock, Veerle, Diemoz, Henri, Eleftheratos, Kostas, Engelmann, Ronny, Eriksen, Paul, Eskes, Henk, Gröbner, Julian, Heikkilä, Anu, Inness, Antje, Jarosławski, Janusz, Josefsson, Weine, Kapsomenakis, John, Karppinen, Tomi, Köhler, Ulf, Meleti, Charoula, Redondas, Alberto, Repapis, Christos, Rimmer, John, Savinykh, Vladimir, Shirotov, Vadim, Siani, Anna Maria, Smedley, Andrew R. D., Solomos, Stavros, Stanek, Martin, Stübi, René, Zerefos, Christos S.   +29 more
core   +2 more sources