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Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP

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Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP. / Oyama, S.; Watkins, B. J.; Djuth, F. T. et al.
In: Journal of Geophysical Research, Vol. 111, No. A6, 06.2006, p. A06309.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Oyama, S, Watkins, BJ, Djuth, FT, Kosch, MJ, Bernhardt, PA & Heinselman, CJ 2006, 'Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP', Journal of Geophysical Research, vol. 111, no. A6, pp. A06309. https://doi.org/10.1029/2005JA011363

APA

Oyama, S., Watkins, B. J., Djuth, F. T., Kosch, M. J., Bernhardt, P. A., & Heinselman, C. J. (2006). Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP. Journal of Geophysical Research, 111(A6), A06309. https://doi.org/10.1029/2005JA011363

Vancouver

Oyama S, Watkins BJ, Djuth FT, Kosch MJ, Bernhardt PA, Heinselman CJ. Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP. Journal of Geophysical Research. 2006 Jun;111(A6):A06309. doi: 10.1029/2005JA011363

Author

Oyama, S. ; Watkins, B. J. ; Djuth, F. T. et al. / Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP. In: Journal of Geophysical Research. 2006 ; Vol. 111, No. A6. pp. A06309.

Bibtex

@article{bb95b166677647189b2aad7d27372d1d,
title = "Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP",
abstract = "Plasma lines excited by a powerful, high-frequency (HF) radio wave are studied using data obtained with an ultrahigh frequency (UHF) radar at HAARP (High Frequency Active Auroral Research Program) from 3 to 5 February 2005. Of particular interest is persistent enhancement of the radar backscatter power during HF on at several HF frequencies. The persistent enhancement is induced with the HF frequency slightly lower than foF2 by a few hundred kHz; by contrast the persistent enhancement does not appear when the HF frequency is equal to and higher than foF2 or lower than foF2 by more than 500 kHz. When persistent enhancements of the radar backscatter power appear, two case studies show that the local plasma frequency at the reflection height of the O-mode polarization wave is close to the second or third electron gyroharmonic frequencies, but one case study shows that the local plasma frequency at the reflection height is significantly different from the third electron gyroharmonic frequency.",
keywords = "heating DCS-publications-id, art-783, DCS-publications-credits, iono, DCS-publications-personnel-id, 7",
author = "S. Oyama and Watkins, {B. J.} and Djuth, {F. T.} and Kosch, {Mike J.} and Bernhardt, {P. A.} and Heinselman, {C. J.}",
note = "Copyright (2006) American Geophysical Union.",
year = "2006",
month = jun,
doi = "10.1029/2005JA011363",
language = "English",
volume = "111",
pages = "A06309",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "A6",

}

RIS

TY - JOUR

T1 - Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP

AU - Oyama, S.

AU - Watkins, B. J.

AU - Djuth, F. T.

AU - Kosch, Mike J.

AU - Bernhardt, P. A.

AU - Heinselman, C. J.

N1 - Copyright (2006) American Geophysical Union.

PY - 2006/6

Y1 - 2006/6

N2 - Plasma lines excited by a powerful, high-frequency (HF) radio wave are studied using data obtained with an ultrahigh frequency (UHF) radar at HAARP (High Frequency Active Auroral Research Program) from 3 to 5 February 2005. Of particular interest is persistent enhancement of the radar backscatter power during HF on at several HF frequencies. The persistent enhancement is induced with the HF frequency slightly lower than foF2 by a few hundred kHz; by contrast the persistent enhancement does not appear when the HF frequency is equal to and higher than foF2 or lower than foF2 by more than 500 kHz. When persistent enhancements of the radar backscatter power appear, two case studies show that the local plasma frequency at the reflection height of the O-mode polarization wave is close to the second or third electron gyroharmonic frequencies, but one case study shows that the local plasma frequency at the reflection height is significantly different from the third electron gyroharmonic frequency.

AB - Plasma lines excited by a powerful, high-frequency (HF) radio wave are studied using data obtained with an ultrahigh frequency (UHF) radar at HAARP (High Frequency Active Auroral Research Program) from 3 to 5 February 2005. Of particular interest is persistent enhancement of the radar backscatter power during HF on at several HF frequencies. The persistent enhancement is induced with the HF frequency slightly lower than foF2 by a few hundred kHz; by contrast the persistent enhancement does not appear when the HF frequency is equal to and higher than foF2 or lower than foF2 by more than 500 kHz. When persistent enhancements of the radar backscatter power appear, two case studies show that the local plasma frequency at the reflection height of the O-mode polarization wave is close to the second or third electron gyroharmonic frequencies, but one case study shows that the local plasma frequency at the reflection height is significantly different from the third electron gyroharmonic frequency.

KW - heating DCS-publications-id

KW - art-783

KW - DCS-publications-credits

KW - iono

KW - DCS-publications-personnel-id

KW - 7

U2 - 10.1029/2005JA011363

DO - 10.1029/2005JA011363

M3 - Journal article

VL - 111

SP - A06309

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - A6

ER -