Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9811
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dc.contributor.authorallYagova, N.; Institute of the Physics of the Earth, Moscow, Russiaen
dc.contributor.authorallPilipenko, V.; Institute of the Physics of the Earth, Moscow, Russiaen
dc.contributor.authorallLanzerotti, L.; Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey, USAen
dc.contributor.authorallEngebretson, M.; Department of Physics, Augsburg College, Minneapolis, Minnesota, USAen
dc.contributor.authorallRodger, A.; British Antarctic Survey, Cambridge, UKen
dc.contributor.authorallLepidi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallPapitashvili, V.; University of Michigan, Ann Arbor, Michigan, USAen
dc.date.accessioned2015-06-08T14:57:23Zen
dc.date.available2015-06-08T14:57:23Zen
dc.date.issued2004en
dc.identifier.urihttp://hdl.handle.net/2122/9811en
dc.description.abstractTwo-dimensional (2-D) statistical distributions of spectral power and coherence of polar geomagnetic variations with quasi-periods about 10 min are analyzed using data from magnetometer arrays in Antarctica. Examination of the 2-D patterns of spectral power and coherence shows the occurrence of significant variations in geomagnetic power levels but with low spatial coherence near the cusp projection and in the auroral region. At the same time, low-amplitude pulsations, which we coin Picap3 pulsations, are very coherent throughout the polar cap. The region occupied by coherent Picap3 pulsations is shifted toward local MLT night from the geomagnetic pole and is decoupled from the regions of auroral and cusp ULF activity. The spectral power varies with time at polar latitudes in a manner different from that at auroral latitudes. Diurnal variations of power at different stations at the same geomagnetic latitude exhibit different behavior depending on the station’s position relative to geomagnetic and geographic poles. This asymmetry is shown to be partly attributed to the variations of the ionospheric conductance. The primary source of polar pulsations is probably related to intermittent magnetosheath turbulence and tail lobe oscillations, though a particular propagation mechanism has not as yet been identifieden
dc.language.isoEnglishen
dc.publisher.nameAmerican Geophysical Unionen
dc.relation.ispartofJournal of geophysical research - space physicsen
dc.relation.ispartofseries/109 (2004)en
dc.subjectgeomagnetic pulsations, polar capen
dc.titleTwo-dimensional structure of long-period pulsations at polar latitudes in Antarcticaen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberA03222en
dc.subject.INGV01. Atmosphere::01.03. Magnetosphere::01.03.03. Magnetospheric physicsen
dc.identifier.doi10.1029/2003JA010166en
dc.description.obiettivoSpecifico1A. Geomagnetismo e Paleomagnetismoen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0148-0227en
dc.contributor.authorYagova, N.en
dc.contributor.authorPilipenko, V.en
dc.contributor.authorLanzerotti, L.en
dc.contributor.authorEngebretson, M.en
dc.contributor.authorRodger, A.en
dc.contributor.authorLepidi, S.en
dc.contributor.authorPapitashvili, V.en
dc.contributor.departmentInstitute of the Physics of the Earth, Moscow, Russiaen
dc.contributor.departmentInstitute of the Physics of the Earth, Moscow, Russiaen
dc.contributor.departmentBell Laboratories, Lucent Technologies, Murray Hill, New Jersey, USAen
dc.contributor.departmentDepartment of Physics, Augsburg College, Minneapolis, Minnesota, USAen
dc.contributor.departmentBritish Antarctic Survey, Cambridge, UKen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentUniversity of Michigan, Ann Arbor, Michigan, USAen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptInstitute of the Physics of the Earth, Moscow, Russia-
crisitem.author.deptInstitute of the Earth Physics, Moscow, Russia-
crisitem.author.deptBell Laboratories, Lucent Technologies, Murray Hill, New Jersy-
crisitem.author.deptDepartment of Physics, Augsburg College, Minneapolis, MN 55454, U.S.A-
crisitem.author.deptBritish Antarctic Survey, Cambridge, UK-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptUniversity of Michigan, Ann Arbor, Michigan, USA-
crisitem.author.orcid0000-0002-3882-8108-
crisitem.author.orcid0000-0002-5692-2560-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent01. Atmosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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