Signatures of mode conversion and kinetic Alfven waves at the magnetopause Metadata

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Title

  • Main Title Signatures of mode conversion and kinetic Alfven waves at the magnetopause

Creator

  • Author: Johnson, Jay R.
    Creator Type: Personal
  • Author: Cheng, C. Z.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research (ER) (United States)

Publisher

  • Name: Princeton University. Plasma Physics Laboratory.
    Place of Publication: Princeton, New Jersey
    Additional Info: Princeton Plasma Physics Lab., NJ (United States)

Date

  • Creation: 2000-07-21

Language

  • English

Description

  • Content Description: It has been suggested that resonant mode conversion of compressional MHD waves into kinetic Alfven waves at the magnetopause can explain the abrupt transition in wave polarization from compressional to transverse commonly observed during magnetopause crossings. The authors analyze magnetic field data for magnetopause crossings as a function of magnetic shear angle (defined as the angle between the magnetic fields in the magnetosheath and magnetosphere) and compare with the theory of resonant mode conversion. The data suggest that amplification in the transverse magnetic field component at the magnetopause is not significant up to a threshold magnetic shear angle. Above the threshold angle significant amplification results, but with weak dependence on magnetic shear angle. Waves with higher frequency are less amplified and have a higher threshold angle. These observations are qualitatively consistent with theoretical results obtained from the kinetic-fluid wave equations.
  • Physical Description: 572 Kilobytes pages

Subject

  • Keyword: Magnetopause
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Mode Conversion
  • Keyword: Earth Magnetosphere
  • Keyword: Magnetosheath
  • Keyword: Alfven Waves
  • Keyword: Shear

Source

  • Other Information: PBD: 21 Jul 2000

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: PPPL-3477
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/758722
  • Office of Scientific & Technical Information Report Number: 758722
  • Archival Resource Key: ark:/67531/metadc703047

Note

  • Display Note: INIS; OSTI as DE00758722