Mechanism of the historical and the ongoing Vulcanian eruptions of Ebeko volcano, Northern Kuriles

Belousov, Alexander; Belousova, Marina; Auer, Andreas; Walter, Thomas R.; Котенко, Т. А.

doi:10.1007/s00445-020-01426-z

Cited by 16 publications

(5 citation statements)

References 45 publications

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“…The high activity of northern volcanoes Sheveluch, Klyuchevskoy, Bezymyanny, Plosky, and Tolbachik was manifested in the records at seismic stations KIR, KLY, KOZ, and at TUMD station during the Kizimen volcano activation in 2011-2013. Weak signals from gas-ash emissions appeared in the records at SKR station during the Ebeko volcano eruption in 2016-2021 [32][33][34]. Brief episodes of increased activity from the Avachinsky volcano appeared in records at AVH station.…”

Section: Volcanic Stationsmentioning

confidence: 99%

Variability in the Statistical Properties of Continuous Seismic Records on a Network of Stations and Strong Earthquakes: A Case Study from the Kamchatka Peninsula, 2011–2021

Kopylova,

Kasimova,

Lyubushin

et al. 2022

Prime Archives in Applied Sciences

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Section: Volcanic Stationsmentioning

confidence: 99%

Variability in the Statistical Properties of Continuous Seismic Records on a Network of Stations and Strong Earthquakes: A Case Study from the Kamchatka Peninsula, 2011–2021

Kopylova,

Kasimova,

Lyubushin

et al. 2022

Prime Archives in Applied Sciences

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“…Cpx is a stable phase over a very wide range of pressures, temperatures, melt compositions and oxygen fugacities (e.g., Costa, 2004;Nandedkar et al, 2014;Ulmer et al, 2018), meaning Cpx-based thermobarometry has broad utility and has been applied in a wide variety of tectonic settings. In this contribution we specifically focus on the use of Cpx-based thermobarometer to investigate storage conditions in magmas erupted in subduction zones (see Table . 1 for studies performing such calculations; Auer et al, 2013;Belousov et al, 2021;Cassidy et al, 2015;Caulfield et al, 2012;Cigolini et al, 2018;Dahren et al, 2012;Deegan et al, 2016;Freundt and Kutterolf, 2019;Geiger et al, 2018;Hollyday et al, 2020;Jeffery et al, 2013;Lai et al, 2018;Lormand et al, 2021;Moussallam et al, 2021Moussallam et al, , 2019Namur et al, 2020;Preece et al, 2014;Romero et al, 2022;Ruth and Costa, 2021;Sas et al, 2017;Scruggs and Putirka, 2018;Sheehan and Barclay, 2016).…”

Section: Introductionmentioning

confidence: 99%

Barometers behaving badly II: A critical evaluation of Cpx-only and Cpx-Liq thermobarometry in variably-hydrous arc magmas

Wieser¹,

Kent²,

Till³

2024

Preprint

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The chemistry of erupted clinopyroxene crystals (±equilibrium liquids) have been widely used to deduce the pressures and temperatures of magma storage in volcanic arcs. However, the wide variety of different equations parametrizing the relationship between mineral and melt compositions and intensive variables such as pressure and temperature yield vastly different results, with implications for our interpretation of magma storage conditions. We use a new test dataset of N=505 Cpx-Liq pairs from variably-hydrous experiments at crustal conditions (0-13 kbar) to assess the performance of different thermobarometers, and identify the most accurate and precise expressions for application to subduction zone magmas. First, we assess different equilibrium tests, finding that comparing the measured and predicted EnFs and KD (using Fet in both phases) are the most useful tests in arc magmas, while CaTs, CaTi and Jd tests have limited utility. We then apply further quality filters based on cation sums (3.95-4.05), number of analyses (N>5), and the presence of reported H2O data in the liquid to obtain a filtered dataset (N=194). We use this filtered dataset to compare calculated versus experimental pressures and temperatures for different combinations of thermobarometers. A number of Cpx-Liq thermometers perform very well when liquid H2O contents are known, although the Cpx composition contributes relatively little to the calculated temperature. Most Cpx-only thermometers perform very badly, greatly overestimating temperatures for hydrous experiments. Cpx-Liq and Cpx-only barometers show similar performance to one another, all showing low precision and systematic offsets (overestimating pressure for low P experiments, and underestimating pressure for High P expressions). We also assess the sensitivity of different equations to melt H2O contents, which are poorly constrained in many natural systems. Overall, this work demonstrates that substantial work is needed to obtain precise and accurate estimates of magma storage depths from Cpx±Liq equilibrium in volcanic arcs. At present, Cpx-based barometry only provides sufficient resolution to distinguish broad storage regions (e.g., upper, mid, lower crust), rather than ability to precisely and accurately locate magma reservoirs to compare to geophysical records.

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“…In contrast, volcanoes prone to low- to moderate-intensity explosive activity, such as phreatic, Surtseyan, Strombolian, violent Strombolian, and Vulcanian eruptions, are characterized by the repetitive emplacement of fine-grained and moderately dispersed tephra beds in the down-wind sectors from the source vent, resulting in more complex tephro-stratigraphic studies (Walker 1973 ; Newhall and Self 1982 ; Arrighi et al 2001 ; Yasui and Koyaguchi 2004 ; de Vita et al 2010 ; Pistolesi et al 2016 , 2017 ; Bernard and Bouvet de Maisonneuve 2020 ; Belousov et al 2021 ; Drymoni et al 2023 ; Vallejo et al 2024 ).…”

Section: Introductionmentioning

confidence: 99%

The last 1100 years of activity of La Fossa caldera, Vulcano Island (Italy): new insights into stratigraphy, chronology, and landscape evolution

Di Traglia,

Pistolesi,

Bonadonna

et al. 2024

Bull Volcanol

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A detailed study of past eruptive activity is crucial to understanding volcanic systems and associated hazards. We present a meticulous stratigraphic analysis, a comprehensive chronological reconstruction, thorough tephra mapping, and a detailed analysis of the interplay between primary and secondary volcanic processes of the post-900 AD activity of La Fossa caldera, including the two main systems of La Fossa volcano and Vulcanello cones (Vulcano Island, Italy). Our analyses demonstrate how the recent volcanic activity of La Fossa caldera is primarily characterized by effusive and Strombolian activity and Vulcanian eruptions, combined with sporadic sub-Plinian events and both impulsive and long-lasting phreatic explosions, all of which have the capacity to severely impact the entire northern sector of Vulcano island. We document a total of 30 eruptions, 25 from the La Fossa volcano and 5 from Vulcanello cones, consisting of ash to lapilli deposits and fields of ballistic bombs and blocks. Volcanic activity alternated with significant erosional phases and volcaniclastic re-sedimentation. Large-scale secondary erosion processes occur in response to the widespread deposition of fine-grained ash blankets, both onto the active cone of La Fossa and the watersheds conveying their waters into the La Fossa caldera. The continuous increase in ground height above sea level, particularly in the western sector of the caldera depression where key infrastructure is situated, is primarily attributed to long-term alluvial processes. We demonstrate how a specific methodological approach is key to the characterization and hazard assessment of low-to-high intensity volcanic activity, where tephra is emitted over long time periods and is intercalated with phases of erosion and re-sedimentation.

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Mechanism of the historical and the ongoing Vulcanian eruptions of Ebeko volcano, Northern Kuriles

Cited by 16 publications

References 45 publications

Variability in the Statistical Properties of Continuous Seismic Records on a Network of Stations and Strong Earthquakes: A Case Study from the Kamchatka Peninsula, 2011–2021

Variability in the Statistical Properties of Continuous Seismic Records on a Network of Stations and Strong Earthquakes: A Case Study from the Kamchatka Peninsula, 2011–2021

Barometers behaving badly II: A critical evaluation of Cpx-only and Cpx-Liq thermobarometry in variably-hydrous arc magmas

The last 1100 years of activity of La Fossa caldera, Vulcano Island (Italy): new insights into stratigraphy, chronology, and landscape evolution

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