Equator-S Observations of Boundary Signatures: FTE's or Kelvin-Helmholtz Waves?

K. Nykyri; A. Otto; J. Büchner; B. Nikutowski; W. Baumjohann; L. M. Kistler; C. Mouikis

doi:/133GM20

Equator-S Observations of Boundary Signatures: FTE's or Kelvin-Helmholtz Waves?

K. Nykyri, A. Otto, J. Büchner, B. Nikutowski, W. Baumjohann, L. M. Kistler, C. Mouikis

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

The observation of a bipolar variation of the magnetic field component normal to the magnetopause is usually interpreted in terms of magnetic flux transfer events, FTE’s. Our MHD simulations indicate that such signatures can also be explained by the Kelvin-Helmholtz instability (KHI). We have analyzed Equator-S data on March 10, 1998 at the dawnside magnetospheric flank and compared our 2D MHD simulation results with these observations. Equator-S encountered strongly perturbed magnetic signatures and very thin magnetic boundaries with brief intervals satisfying the Walen relation. The de Hoffmann-Teller (HT) velocities for these brief intervals were much larger than that of the overall 36 min period.

Original language	American English
Title of host publication	Earth's Low-Latitude Boundary Layer
DOIs	https://doi.org//133GM20
State	Published - Jan 2003
Externally published	Yes

Keywords

magnetospheric boundary layer

Disciplines

Atmospheric Sciences

Access to Document

/133GM20License: Unspecified

Cite this

@inbook{f6a97c2da573409e88bc47f17bcea7c5,

title = "Equator-S Observations of Boundary Signatures: FTE's or Kelvin-Helmholtz Waves?",

abstract = " The observation of a bipolar variation of the magnetic field component normal to the magnetopause is usually interpreted in terms of magnetic flux transfer events, FTE{\textquoteright}s. Our MHD simulations indicate that such signatures can also be explained by the Kelvin-Helmholtz instability (KHI). We have analyzed Equator-S data on March 10, 1998 at the dawnside magnetospheric flank and compared our 2D MHD simulation results with these observations. Equator-S encountered strongly perturbed magnetic signatures and very thin magnetic boundaries with brief intervals satisfying the Walen relation. The de Hoffmann-Teller (HT) velocities for these brief intervals were much larger than that of the overall 36 min period.",

keywords = "magnetospheric boundary layer",

author = "K. Nykyri and A. Otto and J. B{\"u}chner and B. Nikutowski and W. Baumjohann and Kistler, {L. M.} and C. Mouikis",

year = "2003",

month = jan,

doi = "/133GM20",