View in EDS HTML Full Text PDF Full Text

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

Saved in:
Bibliographic Details
Title: The 1956 eruption of Bezymianny volcano (Kamchatka). Part II—Magma dynamics and timescales from crystal records.
Authors: Ostorero, Lea1,2 (AUTHOR) leaemma.ostorero@unimib.it, Boudon, Georges1 (AUTHOR), Balcone-Boissard, Hélène3 (AUTHOR), Martel, Caroline4 (AUTHOR), Erdmann, Saskia4 (AUTHOR), Morgan, Daniel J.5 (AUTHOR), Belousov, Alexander6 (AUTHOR), Belousova, Marina6 (AUTHOR), Davydova, Vesta7 (AUTHOR), d'Augustin, Thiebaut3 (AUTHOR)
Source: Bulletin of Volcanology. Mar2025, Vol. 87 Issue 3, p1-22. 22p.
Subject Terms: *Earth sciences, *Orthopyroxene, *Density currents, *Geology, *Magmas
Abstract: 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). [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 183974248
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: The 1956 eruption of Bezymianny volcano (Kamchatka). Part II—Magma dynamics and timescales from crystal records.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ostorero%2C+Lea%22">Ostorero, Lea</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> leaemma.ostorero@unimib.it</i><br /><searchLink fieldCode="AR" term="%22Boudon%2C+Georges%22">Boudon, Georges</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Balcone-Boissard%2C+Hélène%22">Balcone-Boissard, Hélène</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Martel%2C+Caroline%22">Martel, Caroline</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Erdmann%2C+Saskia%22">Erdmann, Saskia</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Morgan%2C+Daniel+J%2E%22">Morgan, Daniel J.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Belousov%2C+Alexander%22">Belousov, Alexander</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Belousova%2C+Marina%22">Belousova, Marina</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Davydova%2C+Vesta%22">Davydova, Vesta</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22d'Augustin%2C+Thiebaut%22">d'Augustin, Thiebaut</searchLink><relatesTo>3</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Volcanology%22">Bulletin of Volcanology</searchLink>. Mar2025, Vol. 87 Issue 3, p1-22. 22p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br />*<searchLink fieldCode="DE" term="%22Orthopyroxene%22">Orthopyroxene</searchLink><br />*<searchLink fieldCode="DE" term="%22Density+currents%22">Density currents</searchLink><br />*<searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink><br />*<searchLink fieldCode="DE" term="%22Magmas%22">Magmas</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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). [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=183974248
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s00445-024-01792-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 22
        StartPage: 1
    Subjects:
      – SubjectFull: Earth sciences
        Type: general
      – SubjectFull: Orthopyroxene
        Type: general
      – SubjectFull: Density currents
        Type: general
      – SubjectFull: Geology
        Type: general
      – SubjectFull: Magmas
        Type: general
    Titles:
      – TitleFull: The 1956 eruption of Bezymianny volcano (Kamchatka). Part II—Magma dynamics and timescales from crystal records.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ostorero, Lea
      – PersonEntity:
          Name:
            NameFull: Boudon, Georges
      – PersonEntity:
          Name:
            NameFull: Balcone-Boissard, Hélène
      – PersonEntity:
          Name:
            NameFull: Martel, Caroline
      – PersonEntity:
          Name:
            NameFull: Erdmann, Saskia
      – PersonEntity:
          Name:
            NameFull: Morgan, Daniel J.
      – PersonEntity:
          Name:
            NameFull: Belousov, Alexander
      – PersonEntity:
          Name:
            NameFull: Belousova, Marina
      – PersonEntity:
          Name:
            NameFull: Davydova, Vesta
      – PersonEntity:
          Name:
            NameFull: d'Augustin, Thiebaut
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 02588900
          Numbering:
            – Type: volume
              Value: 87
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Bulletin of Volcanology
              Type: main
ResultId 1