First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic

M. J. Kosch; B. Gustavsson; C. Heinselman; T. Pedersen; M. T. Rietveld; J. Spaleta; A. Wong; W. Wang; C. Mutiso; B. Bristow; J. Hughes

doi:10.1016/j.jastp.2009.08.007

First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic

M. J. Kosch, B. Gustavsson, C. Heinselman, T. Pedersen, M. T. Rietveld, J. Spaleta, A. Wong, W. Wang, C. Mutiso, B. Bristow, J. Hughes

Geospace Frontiers

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Abstract

We report first results from a unique experiment performed at the HIPAS ionospheric modification facility in conjunction with the Poker Flat incoherent scatter radar in Alaska. High-power radio waves at 2.85 MHz, which corresponds to the second electron gyro-harmonic at ~245 km altitude, were transmitted into the nighttime ionosphere. Clear evidence of F-region ionospheric electron temperature enhancements were found, for the first time at this pump frequency, maximizing when the pump frequency is close to the second gyro-harmonic and double resonance. This is consistent with previous pump-enhanced artificial optical observations. We estimate the plasma heating efficiency to be approximately double that for higher pump frequencies.

Original language	English
Pages (from-to)	1959-1966
Number of pages	8
Journal	Journal of Atmospheric and Solar-Terrestrial Physics
Volume	71
Issue number	17-18
DOIs	https://doi.org/10.1016/j.jastp.2009.08.007
State	Published - Dec 2009

Keywords

Active experiments
Auroral ionosphere

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10.1016/j.jastp.2009.08.007

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Kosch, M. J., Gustavsson, B., Heinselman, C., Pedersen, T., Rietveld, M. T., Spaleta, J., Wong, A., Wang, W., Mutiso, C., Bristow, B., & Hughes, J. (2009). First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic. Journal of Atmospheric and Solar-Terrestrial Physics, 71(17-18), 1959-1966. https://doi.org/10.1016/j.jastp.2009.08.007

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title = "First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic",

abstract = "We report first results from a unique experiment performed at the HIPAS ionospheric modification facility in conjunction with the Poker Flat incoherent scatter radar in Alaska. High-power radio waves at 2.85 MHz, which corresponds to the second electron gyro-harmonic at \textasciitilde{}245 km altitude, were transmitted into the nighttime ionosphere. Clear evidence of F-region ionospheric electron temperature enhancements were found, for the first time at this pump frequency, maximizing when the pump frequency is close to the second gyro-harmonic and double resonance. This is consistent with previous pump-enhanced artificial optical observations. We estimate the plasma heating efficiency to be approximately double that for higher pump frequencies.",

keywords = "Active experiments, Auroral ionosphere",

author = "Kosch, \{M. J.\} and B. Gustavsson and C. Heinselman and T. Pedersen and Rietveld, \{M. T.\} and J. Spaleta and A. Wong and W. Wang and C. Mutiso and B. Bristow and J. Hughes",

year = "2009",

month = dec,

doi = "10.1016/j.jastp.2009.08.007",

language = "English",

volume = "71",

pages = "1959--1966",

journal = "Journal of Atmospheric and Solar-Terrestrial Physics",

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Kosch, MJ, Gustavsson, B, Heinselman, C, Pedersen, T, Rietveld, MT, Spaleta, J, Wong, A, Wang, W, Mutiso, C, Bristow, B & Hughes, J 2009, 'First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic', Journal of Atmospheric and Solar-Terrestrial Physics, vol. 71, no. 17-18, pp. 1959-1966. https://doi.org/10.1016/j.jastp.2009.08.007

TY - JOUR

T1 - First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic

AU - Kosch, M. J.

AU - Gustavsson, B.

AU - Heinselman, C.

AU - Pedersen, T.

AU - Rietveld, M. T.

AU - Spaleta, J.

AU - Wong, A.

AU - Wang, W.

AU - Mutiso, C.

AU - Bristow, B.

AU - Hughes, J.

PY - 2009/12

Y1 - 2009/12

N2 - We report first results from a unique experiment performed at the HIPAS ionospheric modification facility in conjunction with the Poker Flat incoherent scatter radar in Alaska. High-power radio waves at 2.85 MHz, which corresponds to the second electron gyro-harmonic at ~245 km altitude, were transmitted into the nighttime ionosphere. Clear evidence of F-region ionospheric electron temperature enhancements were found, for the first time at this pump frequency, maximizing when the pump frequency is close to the second gyro-harmonic and double resonance. This is consistent with previous pump-enhanced artificial optical observations. We estimate the plasma heating efficiency to be approximately double that for higher pump frequencies.

AB - We report first results from a unique experiment performed at the HIPAS ionospheric modification facility in conjunction with the Poker Flat incoherent scatter radar in Alaska. High-power radio waves at 2.85 MHz, which corresponds to the second electron gyro-harmonic at ~245 km altitude, were transmitted into the nighttime ionosphere. Clear evidence of F-region ionospheric electron temperature enhancements were found, for the first time at this pump frequency, maximizing when the pump frequency is close to the second gyro-harmonic and double resonance. This is consistent with previous pump-enhanced artificial optical observations. We estimate the plasma heating efficiency to be approximately double that for higher pump frequencies.

KW - Active experiments

KW - Auroral ionosphere

UR - https://www.scopus.com/pages/publications/72049092941

U2 - 10.1016/j.jastp.2009.08.007

DO - 10.1016/j.jastp.2009.08.007

M3 - Article

AN - SCOPUS:72049092941

SN - 1364-6826

VL - 71

SP - 1959

EP - 1966

JO - Journal of Atmospheric and Solar-Terrestrial Physics

JF - Journal of Atmospheric and Solar-Terrestrial Physics

IS - 17-18

ER -

First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic

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