Show simple item record

dc.contributor.authorSchlosser, E
dc.contributor.authorAnschütz, Helgard
dc.contributor.authorIsaksson, E.
dc.contributor.authorMartma, T
dc.contributor.authorDivine, Dmitry V
dc.contributor.authorNøst, O.-A.
dc.date.accessioned2019-11-26T21:32:43Z
dc.date.available2019-11-26T21:32:43Z
dc.date.issued2012
dc.description.abstractThe mass balance of Antarctica is one of the crucial factors for determining sea-level change in a warming climate. The marginal zones of the continent, namely the ice shelves, are most sensitive to climate change. During the 2009/10 austral summer an extensive glaciological field campaign was carried out on Fimbulisen, an ice shelf in East Antarctica, to investigate its recent surface mass balance. Shallow (10–18 m) firn cores were drilled and accumulation rates and stable-isotope ratios determined. For firn-core dating, two different methods were compared: (1) seasonal variations of stable oxygen isotope ratios (δ<sup>18</sup>O), and (2) dielectric profiling, including using the volcanic eruptions of Pinatubo, Philippines (1991), and El Chichόn, Mexico (1982), as time markers. The mean annual accumulation for the period 1992–2009 ranges from 298 to 349 mmw.e. a<sup>–1</sup>. The interannual variability at the drilling sites is >30%. Accumulation rates show a weak decreasing trend during the past 20–30 years, which is statistically significant only for one of the cores. Stable-isotope ratios were compared to the snowfall temperature of Neumayer station. Neither the temperatures nor the δ<sup>18</sup>O values show any trend for the investigated time period.en_US
dc.description.sponsorshipNorwegian Research Council, Norwegian Antarctic Research Expeditions (NARE) projecten_US
dc.descriptionSource at <a href=https://doi.org/10.3189/2012AoG60A102>https://doi.org/10.3189/2012AoG60A102</a>.en_US
dc.identifier.citationSchlosser E, Anschütz H, Isaksson E, Martma T, Divine Dv, Nost. Surface mass balance and stable oxygen isotope ratios from shallow firn cores on Fimbulisen, East Antarctica. Annals of Glaciology. 2012;53(60):70-78en_US
dc.identifier.cristinIDFRIDAID 1020605
dc.identifier.doi10.3189/2012AoG60A102
dc.identifier.issn0260-3055
dc.identifier.issn1727-5644
dc.identifier.urihttps://hdl.handle.net/10037/16740
dc.language.isoengen_US
dc.publisherCambridge University Pressen_US
dc.relation.journalAnnals of Glaciology
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology, glaciology: 465en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi, glasiologi: 465en_US
dc.titleSurface mass balance and stable oxygen isotope ratios from shallow firn cores on Fimbulisen, East Antarcticaen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record