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Article: Suppression of the Polar Tongue of Ionization During the 21 August 2017 Solar Eclipse

TitleSuppression of the Polar Tongue of Ionization During the 21 August 2017 Solar Eclipse
Authors
KeywordsSolar eclipse effect
High‐latitude response
Tongue of ionization
Magnetosphere‐ionosphere coupling
Issue Date2018
PublisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007
Citation
Geophysical Research Letters, 2018, v. 45 n. 7, p. 2918-2925 How to Cite?
AbstractIt has long been recognized that during solar eclipses, the ionosphere‐thermosphere system changes greatly within the eclipse shadow, due to the rapid reduction of solar irradiation. However, the concept that a solar eclipse impacts polar ionosphere behavior and dynamics as well as magnetosphere‐ionosphere coupling has not been appreciated. In this study, we investigate the potential impact of the 21 August 2017 solar eclipse on the polar tongue of ionization (TOI) using a high‐resolution, coupled ionosphere‐thermosphere‐electrodynamics model. The reduction of electron densities by the eclipse in the middle latitude TOI source region leads to a suppressed TOI in the polar region. The TOI suppression occurred when the solar eclipse moved into the afternoon sector. The Global Positioning System total electron content observations show similar tendency of polar region total electron content suppression. This study reveals that a solar eclipse occurring at middle latitudes may have significant influences on the polar ionosphere and magnetosphere‐ionosphere coupling.
Persistent Identifierhttp://hdl.handle.net/10722/260395
ISSN
2019 Impact Factor: 4.497
2015 SCImago Journal Rankings: 3.323
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorDang, T-
dc.contributor.authorLei, J-
dc.contributor.authorWang, W-
dc.contributor.authorBurns, A-
dc.contributor.authorZhang, B-
dc.contributor.authorZhang, S-
dc.date.accessioned2018-09-14T08:41:03Z-
dc.date.available2018-09-14T08:41:03Z-
dc.date.issued2018-
dc.identifier.citationGeophysical Research Letters, 2018, v. 45 n. 7, p. 2918-2925-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/260395-
dc.description.abstractIt has long been recognized that during solar eclipses, the ionosphere‐thermosphere system changes greatly within the eclipse shadow, due to the rapid reduction of solar irradiation. However, the concept that a solar eclipse impacts polar ionosphere behavior and dynamics as well as magnetosphere‐ionosphere coupling has not been appreciated. In this study, we investigate the potential impact of the 21 August 2017 solar eclipse on the polar tongue of ionization (TOI) using a high‐resolution, coupled ionosphere‐thermosphere‐electrodynamics model. The reduction of electron densities by the eclipse in the middle latitude TOI source region leads to a suppressed TOI in the polar region. The TOI suppression occurred when the solar eclipse moved into the afternoon sector. The Global Positioning System total electron content observations show similar tendency of polar region total electron content suppression. This study reveals that a solar eclipse occurring at middle latitudes may have significant influences on the polar ionosphere and magnetosphere‐ionosphere coupling.-
dc.languageeng-
dc.publisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007-
dc.relation.ispartofGeophysical Research Letters-
dc.rights©2018. American Geophysical Union. All Rights Reserved. This article is available at https://doi.org/10.1002/2018GL077328.-
dc.subjectSolar eclipse effect-
dc.subjectHigh‐latitude response-
dc.subjectTongue of ionization-
dc.subjectMagnetosphere‐ionosphere coupling-
dc.titleSuppression of the Polar Tongue of Ionization During the 21 August 2017 Solar Eclipse-
dc.typeArticle-
dc.identifier.emailZhang, B: binzh@hku.hk-
dc.identifier.authorityZhang, B=rp02366-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/2018GL077328-
dc.identifier.scopuseid_2-s2.0-85045874777-
dc.identifier.hkuros290272-
dc.identifier.volume45-
dc.identifier.issue7-
dc.identifier.spage2918-
dc.identifier.epage2925-
dc.identifier.isiWOS:000435743400005-
dc.publisher.placeUnited States-
dc.identifier.issnl0094-8276-

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