Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

C. M. Huang

doi:10.1016/S1364-6826(02)00338-3

Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

C. M. Huang

Department of Space Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The observations of meter-scale, field-aligned irregularities made at the Chung-Li VHF radar are presented. Applying radar interferometry, the temporal and spatial variations of backscatter positions show the appearance of quasi-periodic (QP) drift motions, with wavelengths of about 10-15 km, and wave frequencies close to the Brunt-Vaisala frequency. This periodicity also reflects the so-called QP echoes shown in the range-time-intensity (RTI) plots. In-beam images of scatters are also analyzed in this paper, results show that the scattering structures are mainly organized along wave fronts. But, in some cases, the quasi-point target scatters are responsible for the striations in the RTI plots.

Original language	English
Pages (from-to)	285-292
Number of pages	8
Journal	Journal of Atmospheric and Solar-Terrestrial Physics
Volume	65
Issue number	3
DOIs	https://doi.org/10.1016/S1364-6826(02)00338-3
State	Published - Feb 2003

Keywords

In-beam image
Interferometry
Irregularities
QP echoes

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10.1016/S1364-6826(02)00338-3

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title = "Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar",

abstract = "The observations of meter-scale, field-aligned irregularities made at the Chung-Li VHF radar are presented. Applying radar interferometry, the temporal and spatial variations of backscatter positions show the appearance of quasi-periodic (QP) drift motions, with wavelengths of about 10-15 km, and wave frequencies close to the Brunt-Vaisala frequency. This periodicity also reflects the so-called QP echoes shown in the range-time-intensity (RTI) plots. In-beam images of scatters are also analyzed in this paper, results show that the scattering structures are mainly organized along wave fronts. But, in some cases, the quasi-point target scatters are responsible for the striations in the RTI plots.",

keywords = "In-beam image, Interferometry, Irregularities, QP echoes",

author = "Huang, {C. M.}",

note = "Funding Information: This paper was supported by National Science Council of the Republic of China under the grants NSC90-2111-M-008-027 and NSC91-2111-M-008-010.",

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T1 - Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

AU - Huang, C. M.

N1 - Funding Information: This paper was supported by National Science Council of the Republic of China under the grants NSC90-2111-M-008-027 and NSC91-2111-M-008-010.

PY - 2003/2

Y1 - 2003/2

N2 - The observations of meter-scale, field-aligned irregularities made at the Chung-Li VHF radar are presented. Applying radar interferometry, the temporal and spatial variations of backscatter positions show the appearance of quasi-periodic (QP) drift motions, with wavelengths of about 10-15 km, and wave frequencies close to the Brunt-Vaisala frequency. This periodicity also reflects the so-called QP echoes shown in the range-time-intensity (RTI) plots. In-beam images of scatters are also analyzed in this paper, results show that the scattering structures are mainly organized along wave fronts. But, in some cases, the quasi-point target scatters are responsible for the striations in the RTI plots.

AB - The observations of meter-scale, field-aligned irregularities made at the Chung-Li VHF radar are presented. Applying radar interferometry, the temporal and spatial variations of backscatter positions show the appearance of quasi-periodic (QP) drift motions, with wavelengths of about 10-15 km, and wave frequencies close to the Brunt-Vaisala frequency. This periodicity also reflects the so-called QP echoes shown in the range-time-intensity (RTI) plots. In-beam images of scatters are also analyzed in this paper, results show that the scattering structures are mainly organized along wave fronts. But, in some cases, the quasi-point target scatters are responsible for the striations in the RTI plots.

KW - In-beam image

KW - Interferometry

KW - Irregularities

KW - QP echoes

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U2 - 10.1016/S1364-6826(02)00338-3

DO - 10.1016/S1364-6826(02)00338-3

M3 - 期刊論文

AN - SCOPUS:0038131031

SN - 1364-6826

VL - 65

SP - 285

EP - 292

JO - Journal of Atmospheric and Solar-Terrestrial Physics

JF - Journal of Atmospheric and Solar-Terrestrial Physics

IS - 3

ER -

Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

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Keywords

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