|
Read Full Article (file size: 134721 bytes) Cited by
GEOPHYSICAL RESEARCH LETTERS,
VOL. 32,
L23103,
doi:10.1029/2005GL023795,
2005
On fine structure emission associated with plasmaspheric density irregularities
P. H. Yoon
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland, USA
J. D. Menietti
Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, USA
Abstract
The eigenvalue analysis for the upper-hybrid/Langmuir waves trapped in cylindrical density structures is carried out. Under
physical parameters typical for kilometric continuum (KC) source region, it is found that the frequency spacing between individual
fine structure spectrum is within a reasonable observed range of 0.1∼1 kHz. It is also found that the quasi field-aligned
modes are associated with density cavities, while the radial modes are excited within enhanced density column, thus showing
that density irregularities of various types can support discrete wave spectrum featuring wide-ranging frequency gaps.
Received 13
June
2005;
accepted 11
October
2005;
published 6
December
2005.
Index Terms: 2439 Ionosphere: Ionospheric irregularities; 2772 Magnetospheric Physics: Plasma waves and instabilities (2471); 6984 Radio Science: Waves in plasma (7867); 7829 Space Plasma Physics: Kinetic waves and instabilities.
Read Full Article (file size: 134721 bytes) Cited by
Citation: Yoon, P. H., and J. D. Menietti
(2005),
On fine structure emission associated with plasmaspheric density irregularities,
Geophys. Res. Lett.,
32,
L23103,
doi:10.1029/2005GL023795.
Copyright 2005 by the American Geophysical Union.
|