View in EDS

On Multiple Hall‐Like Electron Currents and Tripolar Guide Magnetic Field Perturbations During Kelvin‐Helmholtz Waves.

Saved in:
Bibliographic Details
Title: On Multiple Hall‐Like Electron Currents and Tripolar Guide Magnetic Field Perturbations During Kelvin‐Helmholtz Waves.
Authors: Sturner, Andrew P.1 andrew.sturner@lasp.colorado.edu, Eriksson, Stefan1, Nakamura, Takuma2, Gershman, Daniel J.3, Plaschke, Ferdinand2, Ergun, Robert E.1, Wilder, Frederick D.1, Giles, Barbara3, Pollock, Craig4, Paterson, William R.3, Strangeway, Robert J.5, Baumjohann, Wolfgang2, Burch, James L.6
Source: Journal of Geophysical Research. Space Physics. Feb2018, Vol. 123 Issue 2, p1305-1324. 20p.
Abstract: Abstract: Two magnetopause current sheet crossings with tripolar guide magnetic field signatures were observed by multiple Magnetosphere Multiscale (MMS) spacecraft during Kelvin‐Helmholtz wave activity. The two out‐of‐plane magnetic field depressions of the tripolar guide magnetic field are largely supported by the observed in‐plane electron currents, which are reminiscent of two clockwise Hall current loop systems. A comparison with a three‐dimensional kinetic simulation of Kelvin‐Helmholtz waves and vortex‐induced reconnection suggests that MMS likely encountered the two Hall magnetic field depressions on either side of a magnetic reconnection X‐line. Moreover, MMS observed an out‐of‐plane current reversal and a corresponding in‐plane magnetic field rotation at the center of one of the current sheets, suggesting the presence of two adjacent flux ropes. The region inside one of the ion‐scale flux ropes was characterized by an observed decrease of the total magnetic field, a strong axial current, and significant enhancements of electron density and parallel electron temperature. The flux rope boundary was characterized by currents opposite this axial current, strong in‐plane and converging electric fields, parallel electric fields, and weak electron‐frame Joule dissipation. These return current region observations may reflect a need to support the axial current rather than representing local reconnection signatures in the absence of any exhausts. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
FullText Text:
  Availability: 0
Header DbId: 8gh
DbLabel: GreenFILE
An: 128531840
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: On Multiple Hall‐Like Electron Currents and Tripolar Guide Magnetic Field Perturbations During Kelvin‐Helmholtz Waves.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Sturner%2C+Andrew+P%2E%22">Sturner, Andrew P.</searchLink><relatesTo>1</relatesTo><i> andrew.sturner@lasp.colorado.edu</i><br /><searchLink fieldCode="AR" term="%22Eriksson%2C+Stefan%22">Eriksson, Stefan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nakamura%2C+Takuma%22">Nakamura, Takuma</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Gershman%2C+Daniel+J%2E%22">Gershman, Daniel J.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Plaschke%2C+Ferdinand%22">Plaschke, Ferdinand</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ergun%2C+Robert+E%2E%22">Ergun, Robert E.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wilder%2C+Frederick+D%2E%22">Wilder, Frederick D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Giles%2C+Barbara%22">Giles, Barbara</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Pollock%2C+Craig%22">Pollock, Craig</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Paterson%2C+William+R%2E%22">Paterson, William R.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Strangeway%2C+Robert+J%2E%22">Strangeway, Robert J.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Baumjohann%2C+Wolfgang%22">Baumjohann, Wolfgang</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Burch%2C+James+L%2E%22">Burch, James L.</searchLink><relatesTo>6</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Space+Physics%22">Journal of Geophysical Research. Space Physics</searchLink>. Feb2018, Vol. 123 Issue 2, p1305-1324. 20p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Two magnetopause current sheet crossings with tripolar guide magnetic field signatures were observed by multiple Magnetosphere Multiscale (MMS) spacecraft during Kelvin‐Helmholtz wave activity. The two out‐of‐plane magnetic field depressions of the tripolar guide magnetic field are largely supported by the observed in‐plane electron currents, which are reminiscent of two clockwise Hall current loop systems. A comparison with a three‐dimensional kinetic simulation of Kelvin‐Helmholtz waves and vortex‐induced reconnection suggests that MMS likely encountered the two Hall magnetic field depressions on either side of a magnetic reconnection X‐line. Moreover, MMS observed an out‐of‐plane current reversal and a corresponding in‐plane magnetic field rotation at the center of one of the current sheets, suggesting the presence of two adjacent flux ropes. The region inside one of the ion‐scale flux ropes was characterized by an observed decrease of the total magnetic field, a strong axial current, and significant enhancements of electron density and parallel electron temperature. The flux rope boundary was characterized by currents opposite this axial current, strong in‐plane and converging electric fields, parallel electric fields, and weak electron‐frame Joule dissipation. These return current region observations may reflect a need to support the axial current rather than representing local reconnection signatures in the absence of any exhausts. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=128531840
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/2017JA024155
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 1305
    Titles:
      – TitleFull: On Multiple Hall‐Like Electron Currents and Tripolar Guide Magnetic Field Perturbations During Kelvin‐Helmholtz Waves.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Sturner, Andrew P.
      – PersonEntity:
          Name:
            NameFull: Eriksson, Stefan
      – PersonEntity:
          Name:
            NameFull: Nakamura, Takuma
      – PersonEntity:
          Name:
            NameFull: Gershman, Daniel J.
      – PersonEntity:
          Name:
            NameFull: Plaschke, Ferdinand
      – PersonEntity:
          Name:
            NameFull: Ergun, Robert E.
      – PersonEntity:
          Name:
            NameFull: Wilder, Frederick D.
      – PersonEntity:
          Name:
            NameFull: Giles, Barbara
      – PersonEntity:
          Name:
            NameFull: Pollock, Craig
      – PersonEntity:
          Name:
            NameFull: Paterson, William R.
      – PersonEntity:
          Name:
            NameFull: Strangeway, Robert J.
      – PersonEntity:
          Name:
            NameFull: Baumjohann, Wolfgang
      – PersonEntity:
          Name:
            NameFull: Burch, James L.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 02
              Text: Feb2018
              Type: published
              Y: 2018
          Identifiers:
            – Type: issn-print
              Value: 21699380
          Numbering:
            – Type: volume
              Value: 123
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Journal of Geophysical Research. Space Physics
              Type: main
ResultId 1