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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9099
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dc.contributor.authorallZirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallCafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallUrbini, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallBaskaradas, J. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.date.accessioned2014-09-22T13:39:21Zen
dc.date.available2014-09-22T13:39:21Zen
dc.date.issued2014-08-20en
dc.identifier.urihttp://hdl.handle.net/2122/9099en
dc.description.abstractRadio-echo sounding (RES) is a radar technique widely employed in Antarctica and Greenland to define bedrock topography but, over the last decade, it has also played an important role in subglacial lake exploration and hydrogeological studies at the bedrock/ice interface. In recent studies, bedrock characterization has been improved through analysis of radar power echoes to evaluate the electromagnetic (EM) properties of the interface and allow the distinction between wet and dry interfaces. The RES received signal power depends on ice absorption and bedrock reflectivity, which is closely linked to the specific physical condition of the bedrock. In this paper, an evaluation of EM ice absorption was conducted starting from RES measurements collected over subglacial lakes in Antarctica. The idea was to calculate ice absorption starting from the radar equation in the case of subglacial lakes, where the EM reflectivity value is considered a known constant. These values were compared with those obtained from analysis of ice-core dielectric profiles from EPICA ice-core drilling data. Our analysis reveals that the ice absorption rate calculated from RES measurements has an average value of 7.2 dBkm–1, and it appears constant, independent of the subglacial lake depth in different zones of the Dome C area.en
dc.language.isoEnglishen
dc.relation.ispartofJournal of Glaciologyen
dc.relation.ispartofseries223/60 (2014)en
dc.subjectAntarctic glaciologyen
dc.subjectice physicsen
dc.subjectradio-echo soundingen
dc.subjectsubglacial lakesen
dc.titleElectromagnetic ice absorption rate at Dome C, Antarcticaen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlUnreferreden
dc.description.pagenumber849-854en
dc.subject.INGV02. Cryosphere::02.02. Glaciers::02.02.10. Instruments and techniquesen
dc.identifier.doi10.3189/2014JoG13J208en
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dc.description.obiettivoSpecifico7A. Geofisica di esplorazioneen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0022-1430en
dc.relation.eissn1727-5652en
dc.contributor.authorZirizzotti, A.en
dc.contributor.authorCafarella, L.en
dc.contributor.authorUrbini, S.en
dc.contributor.authorBaskaradas, J. A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
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.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptSAP, School of Electrical and Electronics Engineering-
crisitem.author.orcid0000-0001-7586-9219-
crisitem.author.orcid0000-0003-2005-8923-
crisitem.author.orcid0000-0002-8053-4197-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent02. Cryosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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