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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  "@context": "https://schema.org/", 
  "@id": "https://doi.org/10.3189/172756499781821265", 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Giovanni Piccardi"
    }, 
    {
      "@type": "Person", 
      "name": "Roberto Udisti"
    }, 
    {
      "@type": "Person", 
      "name": "Gabriele Capodaglio"
    }, 
    {
      "@type": "Person", 
      "name": "Rita Traversi"
    }, 
    {
      "@type": "Person", 
      "name": "Carlo Barbante"
    }, 
    {
      "@type": "Person", 
      "name": "S. Vermigli"
    }, 
    {
      "@type": "Person", 
      "name": "Emiliano Castellano"
    }
  ], 
  "datePublished": "1999-01-01", 
  "description": "AbstractA dark layer (\u223c1 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 \u00b1 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.", 
  "headline": "Chemical characterisation of a volcanic event (about AD 1500) at Styx Glacier plateau, northern Victoria Land, Antarctica", 
  "identifier": "https://doi.org/10.3189/172756499781821265", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "inLanguage": {
    "@type": "Language", 
    "alternateName": "eng", 
    "name": "English"
  }, 
  "keywords": [
    "EUTOPIA Alliance", 
    "NEANIAS Atmospheric Research Community", 
    "Earth-Surface Processes"
  ], 
  "license": "", 
  "name": "Chemical characterisation of a volcanic event (about AD 1500) at Styx Glacier plateau, northern Victoria Land, Antarctica", 
  "url": "https://www.openaccessrepository.it/record/121983"
}