Localized field-aligned currents and 4-min TEC and ground magnetic oscillations during the 2015 eruption of Chile’s Calbuco volcano

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dc.contributor.authorAoyama, Tadashi
dc.contributor.authorIyemori, Toshihiko
dc.contributor.authorNakanishi, Kunihito
dc.contributor.authorNishioka, Michi
dc.contributor.authorRosales Corilloclla, Domingo
dc.contributor.authorVeliz, Oscar
dc.contributor.authorVidal Safor, Erick
dc.coverage.spatialCalbuco, Volcán (Región de Los Lagos, Chile)
dc.date.accessioned2018-08-09T14:29:59Z
dc.date.available2018-08-09T14:29:59Z
dc.date.issued2016-08-31
dc.description.abstractThe Calbuco volcano in southern Chile erupted on April 22, 2015. About 2 h after the first eruption, a Swarm satellite passed above the volcano and observed enhancement of small-amplitude (~0.5 nT) magnetic fluctuations with wave-packet structure which extends 15° in latitude. Similar wave packet is seen at the geomagnetic conjugate point of the volcano. Just after the eruption, geomagnetic fluctuations with the spectral peaks around the vertical acoustic resonance periods, 215 and 260 s, were also observed at Huancayo Geomagnetic Observatory located on the magnetic equator. Besides these observations, around 4-min, i.e., 175, 205 and 260 s, oscillations of total electron content (TEC) were observed at global positioning system stations near the volcano. The horizontal propagation velocity and the spatial scale of the TEC oscillation are estimated to be 720 m/s and 1600 km, respectively. These observations strongly suggest that the atmospheric waves induced by explosive volcanic eruption generate TEC variation and electric currents. The Swarm observation may be explained as a manifestation of their magnetic effects observed in the topside ionosphere.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationAoyama, T., Iyemori, T., Nakanishi, K., Nishioka, M., Rosales, D., Veliz, O., & Vidal, E. (2016). Localized field-aligned currents and 4-min TEC and ground magnetic oscillations during the 2015 eruption of Chile’s Calbuco volcano.==$Earth, Planets and Space, 68$==(148), 1-9. https://doi.org/10.1186/s40623-016-0523-0es_ES
dc.identifier.doihttps://doi.org/10.1186/s40623-016-0523-0es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalEarth, Planets and Spacees_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2342
dc.language.isoenges_ES
dc.publisherSpringerOpenes_ES
dc.relation.ispartofurn:issn:1343-8832
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectMagnetic fieldes_ES
dc.subjectMagnetic fluctuationes_ES
dc.subjectField-aligned currentes_ES
dc.subjectAcoustic gravity wavees_ES
dc.subjectMiddle latitudeses_ES
dc.subjectAtmospheric wavees_ES
dc.subjectIonospheric dynamoes_ES
dc.subjectVolcanic eruptiones_ES
dc.subjectTotal electron contentes_ES
dc.subjectIonospheric disturbancees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.04es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.07es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.09es_ES
dc.titleLocalized field-aligned currents and 4-min TEC and ground magnetic oscillations during the 2015 eruption of Chile’s Calbuco volcanoes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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