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Publication:
Glaciochemical reconnaissance of a new ice core from Severnaya Zemlya, Eurasian Arctic

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dc.contributor.authorWeiler, Karin
dc.contributor.authorFischer, Hubertus
dc.contributor.authorFritzsche, Diedrich
dc.contributor.authorRuth, Urs
dc.contributor.authorWilhelms, Frank
dc.contributor.authorMiller, Heinz
dc.date.accessioned2024-09-02T17:43:59Z
dc.date.available2024-09-02T17:43:59Z
dc.date.issued2005
dc.description.abstractA deep ice core has been drilled on Akademii Nauk ice cap, Severnaya Zemlya, Eurasian Arctic. High-resolution chemical analysis has been carried out for the upper 53 m of this ice core to study its potential as an atmospheric aerosol archive, despite strong meltwater percolation. These records show that a seasonal atmospheric signal cannot be deduced. However, strong year-to-year variations have allowed the core to be dated, and a mean annual net mass balance of 0.46 m w.e. a-1 was deduced. The chemical signature of an extraordinarily high peak in electrical conductivity at 26 m depth pointed clearly to the eruption of Bezymianny, Kamchatka, in 1956. However, in general, peaks in the electrical conductivity are not necessarily related to deposition of volcanogenic sulphur aerosol. In contrast, maximum sulphate and nitrate concentrations in the ice could be related to maximum SO2 and NOx anthropogenic emissions in the 1970s, probably caused by the nickel- and copper-producing industries in Norilsk and on the Kola peninsula or by industrial combustion processes occurring in the Siberian Arctic. In addition, during recent decades sulphate and nitrate concentrations declined by 80% and 60%, respectively, reflecting a decrease in anthropogenic pollution of the Arctic basin.
dc.description.numberOfPages11
dc.description.sponsorshipPhysikalisches Institut, Klima- und Umweltphysik (KUP)
dc.identifier.doi10.48350/158292
dc.identifier.publisherDOI10.3189/172756505781829629
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/43041
dc.language.isoen
dc.publisherInternational Glaciological Society
dc.relation.ispartofJournal of glaciology
dc.relation.issn0022-1430
dc.relation.organizationDCD5A442BF29E17DE0405C82790C4DE2
dc.subject.ddc500 - Science::530 - Physics
dc.titleGlaciochemical reconnaissance of a new ice core from Severnaya Zemlya, Eurasian Arctic
dc.typearticle
dspace.entity.typePublication
oaire.citation.endPage74
oaire.citation.issue172
oaire.citation.startPage64
oaire.citation.volume51
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
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unibe.contributor.rolecreator
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unibe.date.licenseChanged2021-08-18 13:24:44
unibe.description.ispublishedpub
unibe.eprints.legacyId158292
unibe.journal.abbrevTitleJ GLACIOL
unibe.refereedTRUE
unibe.subtype.articlejournal

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