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The plasma depletion layer in Saturn’s magnetosheath

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The plasma depletion layer in Saturn’s magnetosheath. / Masters, Adam; Phan, T.; Badman, Sarah V.; Hasegawa, Hiroshi; Fujimoto, Masaki; Russell, C. T.; Coates, A. J.; Dougherty, Michele K.

In: Journal of Geophysical Research: Space Physics, Vol. 119, No. 1, 01.2014, p. 121-130.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Masters, A, Phan, T, Badman, SV, Hasegawa, H, Fujimoto, M, Russell, CT, Coates, AJ & Dougherty, MK 2014, 'The plasma depletion layer in Saturn’s magnetosheath', Journal of Geophysical Research: Space Physics, vol. 119, no. 1, pp. 121-130. https://doi.org/10.1002/2013JA019516

APA

Masters, A., Phan, T., Badman, S. V., Hasegawa, H., Fujimoto, M., Russell, C. T., Coates, A. J., & Dougherty, M. K. (2014). The plasma depletion layer in Saturn’s magnetosheath. Journal of Geophysical Research: Space Physics, 119(1), 121-130. https://doi.org/10.1002/2013JA019516

Vancouver

Masters A, Phan T, Badman SV, Hasegawa H, Fujimoto M, Russell CT et al. The plasma depletion layer in Saturn’s magnetosheath. Journal of Geophysical Research: Space Physics. 2014 Jan;119(1):121-130. https://doi.org/10.1002/2013JA019516

Author

Masters, Adam ; Phan, T. ; Badman, Sarah V. ; Hasegawa, Hiroshi ; Fujimoto, Masaki ; Russell, C. T. ; Coates, A. J. ; Dougherty, Michele K. / The plasma depletion layer in Saturn’s magnetosheath. In: Journal of Geophysical Research: Space Physics. 2014 ; Vol. 119, No. 1. pp. 121-130.

Bibtex

@article{d135234c76a147caa33c78440804ae85,
title = "The plasma depletion layer in Saturn{\textquoteright}s magnetosheath",
abstract = "A plasma depletion layer (PDL) of reduced plasma density and enhanced magnetic field strength can form in the magnetosheath (shocked solar wind) adjacent to the magnetopause boundary of a planetary magnetosphere. The dominant factor controlling the level of plasma depletion and field enhancement in Earth's PDL is the magnetic shear across the magnetopause, due to the influence of this parameter on magnetic reconnection at the boundary. Here we examine the PDL in Saturn's magnetosheath using Cassini spacecraft observations. For most Cassini magnetosheath intervals analyzed, there is some level of both plasma depletion and magnetic field enhancement approaching Saturn's magnetopause, consistent with the presence of a PDL. We find some evidence that the Saturnian PDL responds to the solar wind dynamic pressure, in the same sense as Earth's PDL. However, we find no evidence for a response of Saturn's PDL to the magnetic shear across the magnetopause, in contrast with the terrestrial case. Our results thus suggest that the rate of magnetic flux transport due to reconnection at Saturn's magnetopause is generally small in comparison to the rate of magnetic flux advection by the solar wind and are consistent with the expectation that conditions at Saturn's magnetopause are less favorable for magnetopause reconnection than those at Earth's magnetopause.",
keywords = "Saturn, magnetosheath , magnetopause , magnetic reconnection",
author = "Adam Masters and T. Phan and Badman, {Sarah V.} and Hiroshi Hasegawa and Masaki Fujimoto and Russell, {C. T.} and Coates, {A. J.} and Dougherty, {Michele K.}",
note = "{\textcopyright}2014. American Geophysical Union. All Rights Reserved.",
year = "2014",
month = jan,
doi = "10.1002/2013JA019516",
language = "English",
volume = "119",
pages = "121--130",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - The plasma depletion layer in Saturn’s magnetosheath

AU - Masters, Adam

AU - Phan, T.

AU - Badman, Sarah V.

AU - Hasegawa, Hiroshi

AU - Fujimoto, Masaki

AU - Russell, C. T.

AU - Coates, A. J.

AU - Dougherty, Michele K.

N1 - ©2014. American Geophysical Union. All Rights Reserved.

PY - 2014/1

Y1 - 2014/1

N2 - A plasma depletion layer (PDL) of reduced plasma density and enhanced magnetic field strength can form in the magnetosheath (shocked solar wind) adjacent to the magnetopause boundary of a planetary magnetosphere. The dominant factor controlling the level of plasma depletion and field enhancement in Earth's PDL is the magnetic shear across the magnetopause, due to the influence of this parameter on magnetic reconnection at the boundary. Here we examine the PDL in Saturn's magnetosheath using Cassini spacecraft observations. For most Cassini magnetosheath intervals analyzed, there is some level of both plasma depletion and magnetic field enhancement approaching Saturn's magnetopause, consistent with the presence of a PDL. We find some evidence that the Saturnian PDL responds to the solar wind dynamic pressure, in the same sense as Earth's PDL. However, we find no evidence for a response of Saturn's PDL to the magnetic shear across the magnetopause, in contrast with the terrestrial case. Our results thus suggest that the rate of magnetic flux transport due to reconnection at Saturn's magnetopause is generally small in comparison to the rate of magnetic flux advection by the solar wind and are consistent with the expectation that conditions at Saturn's magnetopause are less favorable for magnetopause reconnection than those at Earth's magnetopause.

AB - A plasma depletion layer (PDL) of reduced plasma density and enhanced magnetic field strength can form in the magnetosheath (shocked solar wind) adjacent to the magnetopause boundary of a planetary magnetosphere. The dominant factor controlling the level of plasma depletion and field enhancement in Earth's PDL is the magnetic shear across the magnetopause, due to the influence of this parameter on magnetic reconnection at the boundary. Here we examine the PDL in Saturn's magnetosheath using Cassini spacecraft observations. For most Cassini magnetosheath intervals analyzed, there is some level of both plasma depletion and magnetic field enhancement approaching Saturn's magnetopause, consistent with the presence of a PDL. We find some evidence that the Saturnian PDL responds to the solar wind dynamic pressure, in the same sense as Earth's PDL. However, we find no evidence for a response of Saturn's PDL to the magnetic shear across the magnetopause, in contrast with the terrestrial case. Our results thus suggest that the rate of magnetic flux transport due to reconnection at Saturn's magnetopause is generally small in comparison to the rate of magnetic flux advection by the solar wind and are consistent with the expectation that conditions at Saturn's magnetopause are less favorable for magnetopause reconnection than those at Earth's magnetopause.

KW - Saturn

KW - magnetosheath

KW - magnetopause

KW - magnetic reconnection

U2 - 10.1002/2013JA019516

DO - 10.1002/2013JA019516

M3 - Journal article

VL - 119

SP - 121

EP - 130

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 1

ER -