Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves
Abstract The four Magnetospheric Multiscale (MMS) spacecraft recorded the first direct evidence of reconnection exhausts associated with Kelvin‐Helmholtz (KH) waves at the duskside magnetopause on 8 September 2015 which allows for local mass and energy transport across the flank magnetopause. Pressu...
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2016-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL068783 |
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| author | S. Eriksson B. Lavraud Victoria Wilder J. E. Stawarz B. L. Giles J. L. Burch W. Baumjohann R. E. Ergun P.‐A. Lindqvist W. Magnes C. J. Pollock C. T. Russell Y. Saito R. J. Strangeway R. B. Torbert D. J. Gershman Yu. V. Khotyaintsev J. C. Dorelli S. J. Schwartz L. Avanov E. Grimes Y. Vernisse A. P. Sturner T. D. Phan G. T. Marklund T. E. Moore W. R. Paterson K. A. Goodrich |
| author_facet | S. Eriksson B. Lavraud Victoria Wilder J. E. Stawarz B. L. Giles J. L. Burch W. Baumjohann R. E. Ergun P.‐A. Lindqvist W. Magnes C. J. Pollock C. T. Russell Y. Saito R. J. Strangeway R. B. Torbert D. J. Gershman Yu. V. Khotyaintsev J. C. Dorelli S. J. Schwartz L. Avanov E. Grimes Y. Vernisse A. P. Sturner T. D. Phan G. T. Marklund T. E. Moore W. R. Paterson K. A. Goodrich |
| author_sort | S. Eriksson |
| collection | DOAJ |
| description | Abstract The four Magnetospheric Multiscale (MMS) spacecraft recorded the first direct evidence of reconnection exhausts associated with Kelvin‐Helmholtz (KH) waves at the duskside magnetopause on 8 September 2015 which allows for local mass and energy transport across the flank magnetopause. Pressure anisotropy‐weighted Walén analyses confirmed in‐plane exhausts across 22 of 42 KH‐related trailing magnetopause current sheets (CSs). Twenty‐one jets were observed by all spacecraft, with small variations in ion velocity, along the same sunward or antisunward direction with nearly equal probability. One exhaust was only observed by the MMS‐1,2 pair, while MMS‐3,4 traversed a narrow CS (1.5 ion inertial length) in the vicinity of an electron diffusion region. The exhausts were locally 2‐D planar in nature as MMS‐1,2 observed almost identical signatures separated along the guide‐field. Asymmetric magnetic and electric Hall fields are reported in agreement with a strong guide‐field and a weak plasma density asymmetry across the magnetopause CS. |
| format | Article |
| id | doaj-art-b423cc67e0184fccb900ca47461747f2 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-b423cc67e0184fccb900ca47461747f22025-08-20T01:51:54ZengWileyGeophysical Research Letters0094-82761944-80072016-06-0143115606561510.1002/2016GL068783Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz wavesS. Eriksson0B. Lavraud1Victoria Wilder2J. E. Stawarz3B. L. Giles4J. L. Burch5W. Baumjohann6R. E. Ergun7P.‐A. Lindqvist8W. Magnes9C. J. Pollock10C. T. Russell11Y. Saito12R. J. Strangeway13R. B. Torbert14D. J. Gershman15Yu. V. Khotyaintsev16J. C. Dorelli17S. J. Schwartz18L. Avanov19E. Grimes20Y. Vernisse21A. P. Sturner22T. D. Phan23G. T. Marklund24T. E. Moore25W. R. Paterson26K. A. Goodrich27Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USAInstitut de Recherche en Astrophysique et Planétologie Université de Toulouse Toulouse FranceLaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USALaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USANASA Goddard Space Flight Center Greenbelt Maryland USASouthwest Research Institute San Antonio Texas USASpace Research Institute Austrian Academy of Sciences Graz AustriaLaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USARoyal Institute of Technology Stockholm SwedenSpace Research Institute Austrian Academy of Sciences Graz AustriaNASA Goddard Space Flight Center Greenbelt Maryland USAInstitute of Geophysics and Planetary Physics, and Department of Earth, Planetary, and Space Sciences University of California Los Angeles California USAInstitute for Space and Astronautical Science Sagamihara JapanInstitute of Geophysics and Planetary Physics, and Department of Earth, Planetary, and Space Sciences University of California Los Angeles California USAPhysics Department and Space Science Center University of New Hampshire Durham New Hampshire USANASA Goddard Space Flight Center Greenbelt Maryland USASwedish Institute of Space Physics Uppsala SwedenNASA Goddard Space Flight Center Greenbelt Maryland USALaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USANASA Goddard Space Flight Center Greenbelt Maryland USAInstitute of Geophysics and Planetary Physics, and Department of Earth, Planetary, and Space Sciences University of California Los Angeles California USAInstitut de Recherche en Astrophysique et Planétologie Université de Toulouse Toulouse FranceLaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USASpace Sciences Laboratory University of California Berkeley California USARoyal Institute of Technology Stockholm SwedenNASA Goddard Space Flight Center Greenbelt Maryland USANASA Goddard Space Flight Center Greenbelt Maryland USALaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USAAbstract The four Magnetospheric Multiscale (MMS) spacecraft recorded the first direct evidence of reconnection exhausts associated with Kelvin‐Helmholtz (KH) waves at the duskside magnetopause on 8 September 2015 which allows for local mass and energy transport across the flank magnetopause. Pressure anisotropy‐weighted Walén analyses confirmed in‐plane exhausts across 22 of 42 KH‐related trailing magnetopause current sheets (CSs). Twenty‐one jets were observed by all spacecraft, with small variations in ion velocity, along the same sunward or antisunward direction with nearly equal probability. One exhaust was only observed by the MMS‐1,2 pair, while MMS‐3,4 traversed a narrow CS (1.5 ion inertial length) in the vicinity of an electron diffusion region. The exhausts were locally 2‐D planar in nature as MMS‐1,2 observed almost identical signatures separated along the guide‐field. Asymmetric magnetic and electric Hall fields are reported in agreement with a strong guide‐field and a weak plasma density asymmetry across the magnetopause CS.https://doi.org/10.1002/2016GL068783reconnection exhaustguide‐magnetic field reconnectionKelvin‐Helmholtz waves |
| spellingShingle | S. Eriksson B. Lavraud Victoria Wilder J. E. Stawarz B. L. Giles J. L. Burch W. Baumjohann R. E. Ergun P.‐A. Lindqvist W. Magnes C. J. Pollock C. T. Russell Y. Saito R. J. Strangeway R. B. Torbert D. J. Gershman Yu. V. Khotyaintsev J. C. Dorelli S. J. Schwartz L. Avanov E. Grimes Y. Vernisse A. P. Sturner T. D. Phan G. T. Marklund T. E. Moore W. R. Paterson K. A. Goodrich Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves Geophysical Research Letters reconnection exhaust guide‐magnetic field reconnection Kelvin‐Helmholtz waves |
| title | Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves |
| title_full | Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves |
| title_fullStr | Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves |
| title_full_unstemmed | Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves |
| title_short | Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin‐Helmholtz waves |
| title_sort | magnetospheric multiscale observations of magnetic reconnection associated with kelvin helmholtz waves |
| topic | reconnection exhaust guide‐magnetic field reconnection Kelvin‐Helmholtz waves |
| url | https://doi.org/10.1002/2016GL068783 |
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