Journal article Open Access
Giovanni Piccardi; Roberto Udisti; Gabriele Capodaglio; Rita Traversi; Carlo Barbante; S. Vermigli; Emiliano Castellano
<?xml version='1.0' encoding='UTF-8'?> <record xmlns="http://www.loc.gov/MARC21/slim"> <leader>00000nam##2200000uu#4500</leader> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Roberto Udisti</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Gabriele Capodaglio</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Rita Traversi</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Carlo Barbante</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">S. Vermigli</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Emiliano Castellano</subfield> </datafield> <datafield tag="024" ind1=" " ind2=" "> <subfield code="a">10.3189/172756499781821265</subfield> <subfield code="2">doi</subfield> </datafield> <controlfield tag="005">20230927145143.0</controlfield> <datafield tag="540" ind1=" " ind2=" "> <subfield code="a">Other (Open)</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">publication</subfield> <subfield code="b">article</subfield> </datafield> <datafield tag="542" ind1=" " ind2=" "> <subfield code="l">open</subfield> </datafield> <controlfield tag="001">121983</controlfield> <datafield tag="856" ind1="4" ind2=" "> <subfield code="s">204925</subfield> <subfield code="u">https://www.openaccessrepository.it/record/121983/files/fulltext.pdf</subfield> <subfield code="z">md5:59eaf270b1604b182a0b8c7ef7de0510</subfield> </datafield> <datafield tag="520" ind1=" " ind2=" "> <subfield code="a">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.</subfield> </datafield> <datafield tag="041" ind1=" " ind2=" "> <subfield code="a">eng</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">user-itmirror</subfield> </datafield> <datafield tag="653" ind1=" " ind2=" "> <subfield code="a">EUTOPIA Alliance</subfield> </datafield> <datafield tag="653" ind1=" " ind2=" "> <subfield code="a">NEANIAS Atmospheric Research Community</subfield> </datafield> <datafield tag="653" ind1=" " ind2=" "> <subfield code="a">Earth-Surface Processes</subfield> </datafield> <datafield tag="100" ind1=" " ind2=" "> <subfield code="a">Giovanni Piccardi</subfield> </datafield> <datafield tag="245" ind1=" " ind2=" "> <subfield code="a">Chemical characterisation of a volcanic event (about AD 1500) at Styx Glacier plateau, northern Victoria Land, Antarctica</subfield> </datafield> <datafield tag="650" ind1="1" ind2="7"> <subfield code="a">cc-by</subfield> <subfield code="2">opendefinition.org</subfield> </datafield> <datafield tag="260" ind1=" " ind2=" "> <subfield code="c">1999-01-01</subfield> </datafield> </record>
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