January 1, 1999 Journal article Open Access

Giovanni Piccardi; Roberto Udisti; Gabriele Capodaglio; Rita Traversi; Carlo Barbante; S. Vermigli; Emiliano Castellano

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  <identifier identifierType="URL">https://www.openaccessrepository.it/record/121983</identifier>
  <creators>
    <creator>
      <creatorName>Giovanni Piccardi</creatorName>
    </creator>
    <creator>
      <creatorName>Roberto Udisti</creatorName>
    </creator>
    <creator>
      <creatorName>Gabriele Capodaglio</creatorName>
    </creator>
    <creator>
      <creatorName>Rita Traversi</creatorName>
    </creator>
    <creator>
      <creatorName>Carlo Barbante</creatorName>
    </creator>
    <creator>
      <creatorName>S. Vermigli</creatorName>
    </creator>
    <creator>
      <creatorName>Emiliano Castellano</creatorName>
    </creator>
  </creators>
  <titles>
    <title>Chemical characterisation of a volcanic event (about AD 1500) at Styx Glacier plateau, northern Victoria Land, Antarctica</title>
  </titles>
  <publisher>INFN Open Access Repository</publisher>
  <publicationYear>1999</publicationYear>
  <subjects>
    <subject>EUTOPIA Alliance</subject>
    <subject>NEANIAS Atmospheric Research Community</subject>
    <subject>Earth-Surface Processes</subject>
  </subjects>
  <dates>
    <date dateType="Issued">1999-01-01</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://www.openaccessrepository.it/record/121983</alternateIdentifier>
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    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.3189/172756499781821265</relatedIdentifier>
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  <rightsList>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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  <descriptions>
    <description descriptionType="Abstract">AbstractA dark layer (∼1 cm thick, 93.41 m deep) was identified in an ice core (116 m deep, covering the period -1350-1995) drilled at Styx Glacier plateau, northern Victoria Land, Antarctica. The ice-core section was dated around AD 1500 ± 20 by a firn-densification model. A chemical characterisation was performed on ten subsamples (resolution 3 cm) located around the dark layer by ion chromatography. The concentration/depth profiles of anions (Cl-, Br-, NC3-, H2PO4-, SO42-), cations (Na+, NH4+, K+, Mg*+, Ga2^) and some organic anions (acetate, formate, propionate and methanesulphonate (MSA)) indicate very high concentration peaks for all the components. However, non-sea-salt sulphate (nssSo/-) and F- show the greatest increase with respect to background values (370 and 860 times, respectively). A crustal contribution is attributed to Ga2+ and MSA. The profiles of gas-phase emitted substances (HF, HBr, HNOs and carboxylic acid) suggest gas emission just before the volcanic eruption. Chloride depletion is evident in the dark layer with respect to Na+/Cl- sea-water ratio. At present, it is not possible to attribute an unambiguous source to the volcanic event, but several pieces of evidence lead us to believe that this may be a time-limited local event.</description>
  </descriptions>
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