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dc.date.accessioned2016-09-14T12:55:17Z
dc.date.available2016-11-07T23:31:03Z
dc.date.issued2016
dc.identifier.urihttp://hdl.handle.net/10852/52514
dc.description.abstractThis study surveys space weather effects on GNSS (Global Navigation Satellite System) signals in the nighttime auroral and polar cap ionosphere using scintillation receivers, all-sky imagers, and the European Incoherent Scatter Svalbard radar. We differentiate between two types of auroral blobs: blob type 1 (BT 1) which is formed when islands of high-density F region plasma (polar cap patches) enter the nightside auroral oval, and blob type 2 (BT 2) which are generated locally in the auroral oval by intense particle precipitation. For BT 1 blobs we have studied 41.4 h of data between November 2010 and February 2014. We find that BT 1 blobs have significantly higher scintillation levels than their corresponding polar cap patch; however, there is no clear relationship between the scintillation levels of the preexisting polar cap patch and the resulting BT 1 blob. For BT 2 blobs we find that they are associated with much weaker scintillations than BT 1 blobs, based on 20 h of data. Compared to patches and BT 2 blobs, the significantly higher scintillation level for BT 1 blobs implies that auroral dynamics plays an important role in structuring of BT 1 blobs. © 2016. American Geophysical Union.en_US
dc.language.isoenen_US
dc.relation.ispartofJin, Yaqi (2016) Characterization of GPS Scintillations in the Polar Ionosphere. Doctoral thesis. http://urn.nb.no/URN:NBN:no-55915
dc.relation.urihttp://urn.nb.no/URN:NBN:no-55915
dc.titleStatistical study of the GNSS phase scintillation associated with two types of auroral blobsen_US
dc.typeJournal articleen_US
dc.creator.authorJin, Yaqi
dc.creator.authorMoen, Jøran I.
dc.creator.authorMiloch, Wojciech J.
dc.creator.authorClausen, Lasse B. N.
dc.creator.authorOksavik, Kjellmar
dc.identifier.cristin1370858
dc.identifier.jtitleJournal of Geophysical Research - Biogeosciences
dc.identifier.volume121
dc.identifier.issue5
dc.identifier.startpage4679
dc.identifier.endpage4697
dc.identifier.doihttp://dx.doi.org/10.1002/2016JA022613
dc.identifier.urnURN:NBN:no-55914
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/52514/1/Jin_et_al-2016.pdf
dc.type.versionPublishedVersion


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