On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability Between 2007-2013

Zachary W. Henry; K. Nykyri; Thomas W Moore; Andrew P. Dimmock; Xuanye Ma

On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability Between 2007-2013

Zachary W. Henry, K. Nykyri, Thomas W Moore, Andrew P. Dimmock, Xuanye Ma

Research output: Contribution to conference › Poster › peer-review

Abstract

Using data from Time History of Events and Macroscale Interactions during Substorms (THEMIS), a statistical study was performed to determine whether a dawn-dusk asymmetry exists in the occurrence rates of the Kelvin-Helmholtz (KH) instability during Parker-Spiral (PS) and Ortho-Parker-Spiral (OPS) orientations of the interplanetary magnetic field (IMF). It is determined from the data that there is a strong preference toward the dawn side during PS orientation. Because IMF is statistically in PS orientation, the KHI preference for the dawn-flank during this orientation may help explain the origin of the plasma sheet asymmetry of cold-component ions because it has been shown that KHI can drive kinetic-scale wave activity capable of ion heating.

Original language	American English
State	Published - Apr 2018
Event	Discovery Day 2018 - Embry-Riddle Aeronautical University Duration: Apr 1 2018 → …

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Conference	Discovery Day 2018
Period	4/1/18 → …

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On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability BeFinal published version, 1.68 MBLicense: CC BY

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title = "On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability Between 2007-2013",

abstract = " Using data from Time History of Events and Macroscale Interactions during Substorms (THEMIS), a statistical study was performed to determine whether a dawn-dusk asymmetry exists in the occurrence rates of the Kelvin-Helmholtz (KH) instability during Parker-Spiral (PS) and Ortho-Parker-Spiral (OPS) orientations of the interplanetary magnetic field (IMF). It is determined from the data that there is a strong preference toward the dawn side during PS orientation. Because IMF is statistically in PS orientation, the KHI preference for the dawn-flank during this orientation may help explain the origin of the plasma sheet asymmetry of cold-component ions because it has been shown that KHI can drive kinetic-scale wave activity capable of ion heating.",

author = "Henry, \{Zachary W.\} and K. Nykyri and Moore, \{Thomas W\} and Dimmock, \{Andrew P.\} and Xuanye Ma",

year = "2018",

month = apr,

language = "American English",

note = "Discovery Day 2018 ; Conference date: 01-04-2018",

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TY - CONF

T1 - On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability Between 2007-2013

AU - Henry, Zachary W.

AU - Nykyri, K.

AU - Moore, Thomas W

AU - Dimmock, Andrew P.

AU - Ma, Xuanye

PY - 2018/4

Y1 - 2018/4

N2 - Using data from Time History of Events and Macroscale Interactions during Substorms (THEMIS), a statistical study was performed to determine whether a dawn-dusk asymmetry exists in the occurrence rates of the Kelvin-Helmholtz (KH) instability during Parker-Spiral (PS) and Ortho-Parker-Spiral (OPS) orientations of the interplanetary magnetic field (IMF). It is determined from the data that there is a strong preference toward the dawn side during PS orientation. Because IMF is statistically in PS orientation, the KHI preference for the dawn-flank during this orientation may help explain the origin of the plasma sheet asymmetry of cold-component ions because it has been shown that KHI can drive kinetic-scale wave activity capable of ion heating.

AB - Using data from Time History of Events and Macroscale Interactions during Substorms (THEMIS), a statistical study was performed to determine whether a dawn-dusk asymmetry exists in the occurrence rates of the Kelvin-Helmholtz (KH) instability during Parker-Spiral (PS) and Ortho-Parker-Spiral (OPS) orientations of the interplanetary magnetic field (IMF). It is determined from the data that there is a strong preference toward the dawn side during PS orientation. Because IMF is statistically in PS orientation, the KHI preference for the dawn-flank during this orientation may help explain the origin of the plasma sheet asymmetry of cold-component ions because it has been shown that KHI can drive kinetic-scale wave activity capable of ion heating.

UR - https://commons.erau.edu/discovery-day/db-discovery-day-2018/poster-session/29

M3 - Poster

T2 - Discovery Day 2018

Y2 - 1 April 2018

ER -

On the Dawn-Dusk Asymmetry of the Kelvin-Helmholtz Instability Between 2007-2013

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