Numerical study of anomalous absorption of O mode waves on magnetic field-aligned striations

Eliasson, B. and Papadopoulos, K. (2015) Numerical study of anomalous absorption of O mode waves on magnetic field-aligned striations. Geophysical Research Letters, 42 (8). pp. 2603-2611. ISSN 0094-8276 (https://doi.org/10.1002/2015GL063751)

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Abstract

Simple expressions that describe mode conversion and anomalous absorption of ordinary (O) mode waves injected at angles between the vertical and magnetic zenith to upper hybrid (UH) oscillations in the presence of field-aligned density striations are presented. The absorption takes place in a region above the UH resonance layer where the striations allow trapped eigenmodes, leading to excitation of large amplitude UH waves. The derivation of the expressions is guided by dimensional analysis and numerical simulations. The results are relevant in interpreting high latitude heating experiments where anomalous absorption due to striations plays a crucial role.

  • Item type:Article
    ID code:52344
    Dates:
    Date
    Event
    28 April 2015
    Published
    1 April 2015
    Published Online
    28 March 2015
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:31 Mar 2015 07:22
    Last modified:08 Apr 2024 22:11
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/52344
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