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Article: MESSENGER observations of magnetospheric substorm activity in Mercury's near magnetotail

TitleMESSENGER observations of magnetospheric substorm activity in Mercury's near magnetotail
Authors
Keywordsdipolarization
field-aligned current
magnetospheric substorm
Mercury
Issue Date2015
Citation
Geophysical Research Letters, 2015, v. 42, n. 10, p. 3692-3699 How to Cite?
AbstractMErcury Surface, Space ENviroment, GEochemistry, and Ranging (MESSENGER) magnetic field and plasma measurements taken during crossings of Mercury's magnetotail from 2011 to 2014 have been examined for evidence of substorms. A total of 26 events were found during which an Earth-like growth phase was followed by clear near-tail expansion phase signatures. During the growth phase, just as at Earth, the thinning of the plasma sheet and the increase of the magnetic field intensity in the lobe are observed, but the fractional increase in field intensity could be ∼3 to 5 times that at Earth. The average timescale of the growth phase is ∼1 min. The dipolarization that marks the initiation of the substorm expansion phase is only a few seconds in duration. During the expansion phase, lasting ∼1 min, the plasma sheet is observed to thicken and engulf the spacecraft. The duration of the substorm observed in this paper is consistent with previous observations of Mercury's Dungey cycle. The reconfiguration of the magnetotail during Mercury's substorm is very similar to that at Earth despite its very compressed timescale.
Persistent Identifierhttp://hdl.handle.net/10722/334391
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, Wei Jie-
dc.contributor.authorSlavin, James A.-
dc.contributor.authorFu, Suiyan-
dc.contributor.authorRaines, Jim M.-
dc.contributor.authorZong, Qiu Gang-
dc.contributor.authorImber, Suzanne M.-
dc.contributor.authorShi, Quanqi-
dc.contributor.authorYao, Zhonghua-
dc.contributor.authorPoh, Gangkai-
dc.contributor.authorGershman, Daniel J.-
dc.contributor.authorPu, Zuyin-
dc.contributor.authorSundberg, Torbjörn-
dc.contributor.authorAnderson, Brian J.-
dc.contributor.authorKorth, Haje-
dc.contributor.authorBaker, Daniel N.-
dc.date.accessioned2023-10-20T06:47:48Z-
dc.date.available2023-10-20T06:47:48Z-
dc.date.issued2015-
dc.identifier.citationGeophysical Research Letters, 2015, v. 42, n. 10, p. 3692-3699-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334391-
dc.description.abstractMErcury Surface, Space ENviroment, GEochemistry, and Ranging (MESSENGER) magnetic field and plasma measurements taken during crossings of Mercury's magnetotail from 2011 to 2014 have been examined for evidence of substorms. A total of 26 events were found during which an Earth-like growth phase was followed by clear near-tail expansion phase signatures. During the growth phase, just as at Earth, the thinning of the plasma sheet and the increase of the magnetic field intensity in the lobe are observed, but the fractional increase in field intensity could be ∼3 to 5 times that at Earth. The average timescale of the growth phase is ∼1 min. The dipolarization that marks the initiation of the substorm expansion phase is only a few seconds in duration. During the expansion phase, lasting ∼1 min, the plasma sheet is observed to thicken and engulf the spacecraft. The duration of the substorm observed in this paper is consistent with previous observations of Mercury's Dungey cycle. The reconfiguration of the magnetotail during Mercury's substorm is very similar to that at Earth despite its very compressed timescale.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectdipolarization-
dc.subjectfield-aligned current-
dc.subjectmagnetospheric substorm-
dc.subjectMercury-
dc.titleMESSENGER observations of magnetospheric substorm activity in Mercury's near magnetotail-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/2015GL064052-
dc.identifier.scopuseid_2-s2.0-84931561234-
dc.identifier.volume42-
dc.identifier.issue10-
dc.identifier.spage3692-
dc.identifier.epage3699-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000356631300009-

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