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Article: Statistical Characteristics of Giant Undulations During Geomagnetic Storms

TitleStatistical Characteristics of Giant Undulations During Geomagnetic Storms
Authors
Keywordsgeomagnetic storms
giant undulations
plasmapause surface waves
ring current
Issue Date2021
Citation
Geophysical Research Letters, 2021, v. 48, n. 13, article no. e2021GL093098 How to Cite?
AbstractIn this letter, the statistical characteristics of the structures of giant undulations (GUs) during geomagnetic storms are studied for the first time, based on aurora images during 2005–2019. The GUs mainly occur within ∼4 h following the beginning of the storm main phase and finish in ±4 h around the storm peak. The most interesting feature is that the anti-sunward edge of GUs is quasi-stable (18–19 h MLT) during their lifetime. The latitudinal amplitudes of GUs (AGU) peak at 200–300 km while the azimuthal wavelengths (WGU) occupy several discrete values between 100 and 900 km. Both AGU and WGU are quasi-proportional to the strength of the storms, and AGU is also proportional to WGU. There are some differences in the characteristics of AGU and WGU between pre- and post dusk sectors. These results would provide both statistical insight for mechanisms of dynamic auroral structures and data sources for validating magnetosphere-plasmasphere-ionosphere coupling models.
Persistent Identifierhttp://hdl.handle.net/10722/334768
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yi Jia-
dc.contributor.authorHe, Fei-
dc.contributor.authorZhang, Xiao Xin-
dc.contributor.authorYao, Zhong Hua-
dc.contributor.authorWei, Yong-
dc.contributor.authorZhang, Yong Liang-
dc.date.accessioned2023-10-20T06:50:36Z-
dc.date.available2023-10-20T06:50:36Z-
dc.date.issued2021-
dc.identifier.citationGeophysical Research Letters, 2021, v. 48, n. 13, article no. e2021GL093098-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334768-
dc.description.abstractIn this letter, the statistical characteristics of the structures of giant undulations (GUs) during geomagnetic storms are studied for the first time, based on aurora images during 2005–2019. The GUs mainly occur within ∼4 h following the beginning of the storm main phase and finish in ±4 h around the storm peak. The most interesting feature is that the anti-sunward edge of GUs is quasi-stable (18–19 h MLT) during their lifetime. The latitudinal amplitudes of GUs (AGU) peak at 200–300 km while the azimuthal wavelengths (WGU) occupy several discrete values between 100 and 900 km. Both AGU and WGU are quasi-proportional to the strength of the storms, and AGU is also proportional to WGU. There are some differences in the characteristics of AGU and WGU between pre- and post dusk sectors. These results would provide both statistical insight for mechanisms of dynamic auroral structures and data sources for validating magnetosphere-plasmasphere-ionosphere coupling models.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectgeomagnetic storms-
dc.subjectgiant undulations-
dc.subjectplasmapause surface waves-
dc.subjectring current-
dc.titleStatistical Characteristics of Giant Undulations During Geomagnetic Storms-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2021GL093098-
dc.identifier.scopuseid_2-s2.0-85109745844-
dc.identifier.volume48-
dc.identifier.issue13-
dc.identifier.spagearticle no. e2021GL093098-
dc.identifier.epagearticle no. e2021GL093098-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000694024100010-

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