uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electron-Scale Measurements of Dipolarization Front
Beihang Univ, Sch Space & Environm, Beijing, Peoples R China.
Beihang Univ, Sch Space & Environm, Beijing, Peoples R China.
Beihang Univ, Sch Space & Environm, Beijing, Peoples R China.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.ORCID iD: 0000-0001-5550-3113
Show others and affiliations
2018 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 45, no 10, p. 4628-4638Article in journal (Refereed) Published
Abstract [en]

Dipolarization front (DF)-a sharp boundary with scale of ion inertial length (c/omega(pi)) in the Earth's magnetotail-can also have fine structures at electron scale (c/omega(pe)). Such electron-scale structures, determining the local energy conversion, have not been revealed by multispacecraft observations so far, due to the large separation of spacecraft in previous studies. Here we report the first electron-scale multispacecraft measurements of DF, using data from the recent Magnetospheric Multiscale mission. We find strong parallel currents only in the high-density side of the DF but strong perpendicular currents across the whole DF. We find no parallel electric fields during the DF interval. Although DF is primarily an energy-load region (E.J > 0), the electron-scale currents could lead to a localized energy generation (E.J < 0). Such features are different from those reported in previous multispacecraft studies, where the currents, electric fields, and energy conversion are uniform across the DF; they also shed lights on the study of substorm current wedge, which is crucial in the magnetosphere-ionosphere coupling.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2018. Vol. 45, no 10, p. 4628-4638
Keywords [en]
electron-scale, dipolarization front, parallel currents, parallel electric fields, energy generation, substorm current wedge
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-358089DOI: 10.1029/2018GL077928ISI: 000435262000012OAI: oai:DiVA.org:uu-358089DiVA, id: diva2:1241786
Available from: 2018-08-24 Created: 2018-08-24 Last updated: 2018-08-24Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Khotyaintsev, Yuri V.

Search in DiVA

By author/editor
Khotyaintsev, Yuri V.
By organisation
Swedish Institute of Space Physics, Uppsala Division
In the same journal
Geophysical Research Letters
Geophysics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 11 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf