Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3751
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dc.contributor.authorallUrbini, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallFrezzotti, M.; enea casacciaen
dc.contributor.authorallGandolfi, S.; università di bolognaen
dc.contributor.authorallVincent, C.; LGGE Grenobleen
dc.contributor.authorallScarchilli, C.; enea casacciaen
dc.contributor.authorallVittuari, V.; università di bolognaen
dc.contributor.authorallFily, M.; LGGE Grenobleen
dc.date.accessioned2008-04-10T16:17:50Zen
dc.date.available2008-04-10T16:17:50Zen
dc.date.issued2008-02en
dc.identifier.urihttp://hdl.handle.net/2122/3751en
dc.description.abstractIce divide–dome behaviour is used for ice sheet mass balance studies and interpretation of ice core records. In order to characterize the historical behaviour (last 400 yr) of Dome C and Talos Dome (East Antarctica), ice velocities have been measured since 1996 using a GPS system, and the palaeo-spatial variability of snow accumulation has been surveyed using snow radar and firn cores. The snow accumulation distribution of both domes indicates distributions of accumulation that are non-symmetrical in relation to dome morphology. Changes in spatial distributions have been observed over the last few centuries, with a decrease in snow accumulation gradient along the wind direction at Talos Dome and a counter-clockwise rotation of accumulation distribution in the northern part of Dome C. Observations at Dome C reveal a significant increase in accumulation since the 1950s, which could correlate to altered snow accumulation patterns due to changes in snowfall trajectory. Snow accumulation mechanisms are different at the two domes: a wind-driven snow accumulation process operates at Talos Dome, whereas snowfall trajectory direction is the main factor at Dome C. Repeated GPS measurements made at Talos Dome have highlighted changes in ice velocity, with a deceleration in the NE portion, acceleration in the SW portion and migration of dome summit, which are apparently correlated with changes in accumulation distribution. The observed behaviour in accumulation and velocity indicates that even the most remote areas of East Antarctica have changed from a decadal to secular scale.en
dc.language.isoEnglishen
dc.publisher.nameelsevieren
dc.relation.ispartofglobal and planetary changeen
dc.relation.ispartofseries3-4/60 (2008)en
dc.subjectgeophysical survey; ice divide; snow accumulation; Talos Dome; Dome C; East Antarcticaen
dc.titleHistorical behaviour of Dome C and Talos Dome (East Antarctica) as investigated by snow accumulation and ice velocity measurementsen
dc.typearticleen
dc.description.statusPublisheden
dc.description.pagenumber576-588en
dc.subject.INGV02. Cryosphere::02.04. Sea ice::02.04.01. Atmosphere/sea ice/ocean interactionen
dc.identifier.doi10.1016/j.gloplacha.2007.08.002en
dc.description.obiettivoSpecifico3.8. Geofisica per l'ambienteen
dc.description.journalTypeJCR Journalen
dc.description.fulltextpartially_openen
dc.contributor.authorUrbini, S.en
dc.contributor.authorFrezzotti, M.en
dc.contributor.authorGandolfi, S.en
dc.contributor.authorVincent, C.en
dc.contributor.authorScarchilli, C.en
dc.contributor.authorVittuari, V.en
dc.contributor.authorFily, M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentenea casacciaen
dc.contributor.departmentuniversità di bolognaen
dc.contributor.departmentLGGE Grenobleen
dc.contributor.departmentenea casacciaen
dc.contributor.departmentuniversità di bolognaen
dc.contributor.departmentLGGE Grenobleen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptENEA-CRE, Casaccia, Rome, Italy-
crisitem.author.deptDistart Bologna-
crisitem.author.deptLGGE-
crisitem.author.deptEnte per le Nuove Tecnologie, l’Energia e l’Ambiente, Roma, Italy-
crisitem.author.deptuniversità di bologna-
crisitem.author.deptLGGE Grenoble-
crisitem.author.orcid0000-0002-8053-4197-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent02. Cryosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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