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IAVCEI - International Association of Volcanology and Chemistry

@iavcei.bsky.social

Social media team contact: 📧 so-me@iavceivolcano.org Official website: iavceivolcano.org

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IAVCEI ECR-Net@iavceiecrnet.bsky.social · 2mo ago

‼️ ATTENTION ECRs with withdrawn abstracts at IAVCEI25 Geneva ‼️ The IAVCEI ECR-net is gauging interest on IAVCEI SA25 ECR Series online seminar series. If you were unable to present in Geneva last year, here is an opportunity to present your research through an online rolling seminar series. ⬇️⬇️⬇️

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Lea Ostorero@ostolea.bsky.social · 2mo ago

With a bit of delay, I would like to thank @iavcei.bsky.social on behalf of all my co-authors, for granting me retrospective open access in January to my 2025 Bull. Volcanol. paper: doi.org/10.1007/s004... The paper is now openly accessible! Thank you again very much again for this opportunity! 🌋

The 1956 eruption of Bezymianny volcano (Kamchatka). Part II—Magma dynamics and timescales from crystal records - Bulletin of Volcanology

Laterally directed blasts are explosive events following a major sector collapse of a volcano, with the potential for devastating areas of several hundred km2, due to powerful dilute and turbulent pyroclastic density currents. The catastrophic flank collapse on 30 March 1956 of Bezymianny (Kamchatka, Russia) was the climactic phase of the first historical magmatic eruption of this volcano, after 1000 years of dormancy. Magma stored in a cryptodome was depressurized by a sector collapse, generating a laterally directed blast immediately followed by pumiceous concentrated pyroclastic density currents. By combining petrological data from Bezymianny plumbing system and temporal constraints from orthopyroxene, magnetite, and amphibole chronometers, we tracked magmatic processes over twelve years prior to the eruption, followed by magma ascent to a shallow reservoir and a heating process at least three months before the eruption. Magma was last stored in a cryptodome at least two months before the climactic phase of the eruption. Evidencing magma dynamics of a few months to a few years before major flank collapses and laterally directed blasts thus represents valuable information for volcanic risk mitigation (as it also occurred at Mt St. Helens).

doi.org

Commission on Tephrochronology@cot-iavcei.bsky.social · 8mo ago

Just going to repost this - EGU is looking pretty special this year, especially for the tephra fans out there! #geology #volcano #tephra #egu2026 @egu.eu @iavcei.bsky.social 🌋🧪⚒️

Commission on Tephrochronology@cot-iavcei.bsky.social · 9mo ago

🌋 Hello tephra & volcano fans 🌋 We have some announcements, including THREE tephra sessions at the #EGU2026 and TWO special issues! Check out our flyer below with all the details, and pass it on! @egu.eu @ingvterremoti.bsky.social @iavcei.bsky.social @tephraportal.bsky.social 🧪⚒️

Commission on Tephrochronology presents three sessions at the EGU, come and submit and abstract: GMPV11.1 “Tephra processes and dispersal: from tephrochronology to hazard assessment applications in volcanology” SSP2.7 “Tephrochronology Beyond Boundaries: Chronology, Correlation and Innovation in Earth System Studies” ESSI3.6 "From Principles to Practice: Multidisciplinary Approaches to Data-Driven Tephra Research" Details on the submission process can be found at https://www.egu26.eu/authors/how-to-submit.html