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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{
  "DOI": "10.3189/172756499781821265", 
  "abstract": "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.", 
  "author": [
    {
      "family": "Giovanni Piccardi"
    }, 
    {
      "family": "Roberto Udisti"
    }, 
    {
      "family": "Gabriele Capodaglio"
    }, 
    {
      "family": "Rita Traversi"
    }, 
    {
      "family": "Carlo Barbante"
    }, 
    {
      "family": "S. Vermigli"
    }, 
    {
      "family": "Emiliano Castellano"
    }
  ], 
  "id": "121983", 
  "issued": {
    "date-parts": [
      [
        1999, 
        1, 
        1
      ]
    ]
  }, 
  "language": "eng", 
  "note": "", 
  "title": "Chemical characterisation of a volcanic event (about AD 1500) at Styx Glacier plateau, northern Victoria Land, Antarctica", 
  "type": "article-journal"
}