Holocene Paleoclimatic Reconstuction in shelf basins of the Ross Sea (Antarctica) (Abstract/Poster in atti di convegno)

Type
Label
  • Holocene Paleoclimatic Reconstuction in shelf basins of the Ross Sea (Antarctica) (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ravaioli M., Langone L. Capotondi L., Giglio F. ,Tesi T. (2006)
    Holocene Paleoclimatic Reconstuction in shelf basins of the Ross Sea (Antarctica)
    in Fall AGU Meeting, San Francisco, CA (USA)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ravaioli M., Langone L. Capotondi L., Giglio F. ,Tesi T. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Understanding recent and past climatic changes is crucial in providing a correct perspective in studies defining future global climate evolution. The Southern Ocean and the Ross Sea areas are crucial, because they play a key role in controlling the global carbon cycle, representing one of the largest oceanic ventilation areas where intermediate and deep waters are in direct contact with the atmosphere. Record of past environmental changes, and their effects on ocean biogeochemistry, is preserved in marine sediments and are used to reconstruct the response of the Ross Sea Ice sheet/shelf to natural climate changes during the Holocene. Morphology of the Ross Sea continental shelf is unique with noticeable depth of the shelf break and deepening of the continental shelf towards the coast. Its rugged topography, with troughs and banks transversal to the shelf break, was shaped by glacial erosion. Nine gravity cores were collected in three different Ross Sea basins. Biogenic silica, organic carbon, magnetic susceptibility and water contents were analysed together with stable isotope (d13C, d15N, d18O) composition to reconstruct the Late Pleistocene-Holocene climatic evolution. Chronologies were established by AMS 14C dates. Sediment cores span from last glacial to present. An accurate calibrated chronology for the late Pleistocene/Holocene is a key point for discussing high-frequency climatic fluctuations, one of the objectives of the PAREO Project involved in the BIPOMAC cluster. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ISMAR, Sede di Bologna, Via Gobetti 101, 40129 Bologna (literal)
Titolo
  • Holocene Paleoclimatic Reconstuction in shelf basins of the Ross Sea (Antarctica) (literal)
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