Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer

A. Najmi, B. Eliasson, X. Shao, G. Milikh, K. Papadopoulos

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Heating of the ionosphere by high-frequency (HF), ordinary (O) mode electromagnetic waves can excite magnetic field aligned density striations (FAS), associated with upper and lower hybrid turbulence and electron heating. We have used Vlasov simulations in one spatial and two velocity dimensions to study the induced turbulence in the presence of striations when the O-mode pump is mode converted to large amplitude upper hybrid oscillations trapped in a striation. Parametric processes give rise to upper and lower hybrid turbulence, as well as to large amplitude, short wavelength electron Bernstein waves. The latter excite stochastic electron heating when their amplitudes exceed a threshold for stochasticity, leading to a rapid increase of the electron temperature by several thousands of Kelvin. The results have relevance for high latitude heating experiments.
LanguageEnglish
Pages704-717
Number of pages13
JournalRadio Science
Volume51
Issue number6
Early online date29 May 2016
DOIs
Publication statusPublished - 22 Jun 2016

Fingerprint

ionospherics
striation
Turbulence
turbulence
heating
Heating
electron
simulation
Electrons
electrons
Ionosphere
Electron temperature
electromagnetic wave
stochasticity
Electromagnetic waves
polar regions
ionospheres
ionosphere
pump
electromagnetic radiation

Keywords

  • ionospheric turbulence
  • upper hybrid waves
  • stochastic heating

Cite this

Najmi, A. ; Eliasson, B. ; Shao, X. ; Milikh, G. ; Papadopoulos, K. / Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer. In: Radio Science. 2016 ; Vol. 51, No. 6. pp. 704-717.
@article{2f8b2d0148614a3d97cda25a80525cbd,
title = "Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer",
abstract = "Heating of the ionosphere by high-frequency (HF), ordinary (O) mode electromagnetic waves can excite magnetic field aligned density striations (FAS), associated with upper and lower hybrid turbulence and electron heating. We have used Vlasov simulations in one spatial and two velocity dimensions to study the induced turbulence in the presence of striations when the O-mode pump is mode converted to large amplitude upper hybrid oscillations trapped in a striation. Parametric processes give rise to upper and lower hybrid turbulence, as well as to large amplitude, short wavelength electron Bernstein waves. The latter excite stochastic electron heating when their amplitudes exceed a threshold for stochasticity, leading to a rapid increase of the electron temperature by several thousands of Kelvin. The results have relevance for high latitude heating experiments.",
keywords = "ionospheric turbulence, upper hybrid waves, stochastic heating",
author = "A. Najmi and B. Eliasson and X. Shao and G. Milikh and K. Papadopoulos",
year = "2016",
month = "6",
day = "22",
doi = "10.1002/2015RS005866",
language = "English",
volume = "51",
pages = "704--717",
journal = "Radio Science",
issn = "0048-6604",
number = "6",

}

Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer. / Najmi, A.; Eliasson, B.; Shao, X.; Milikh, G.; Papadopoulos, K.

In: Radio Science, Vol. 51, No. 6, 22.06.2016, p. 704-717.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer

AU - Najmi, A.

AU - Eliasson, B.

AU - Shao, X.

AU - Milikh, G.

AU - Papadopoulos, K.

PY - 2016/6/22

Y1 - 2016/6/22

N2 - Heating of the ionosphere by high-frequency (HF), ordinary (O) mode electromagnetic waves can excite magnetic field aligned density striations (FAS), associated with upper and lower hybrid turbulence and electron heating. We have used Vlasov simulations in one spatial and two velocity dimensions to study the induced turbulence in the presence of striations when the O-mode pump is mode converted to large amplitude upper hybrid oscillations trapped in a striation. Parametric processes give rise to upper and lower hybrid turbulence, as well as to large amplitude, short wavelength electron Bernstein waves. The latter excite stochastic electron heating when their amplitudes exceed a threshold for stochasticity, leading to a rapid increase of the electron temperature by several thousands of Kelvin. The results have relevance for high latitude heating experiments.

AB - Heating of the ionosphere by high-frequency (HF), ordinary (O) mode electromagnetic waves can excite magnetic field aligned density striations (FAS), associated with upper and lower hybrid turbulence and electron heating. We have used Vlasov simulations in one spatial and two velocity dimensions to study the induced turbulence in the presence of striations when the O-mode pump is mode converted to large amplitude upper hybrid oscillations trapped in a striation. Parametric processes give rise to upper and lower hybrid turbulence, as well as to large amplitude, short wavelength electron Bernstein waves. The latter excite stochastic electron heating when their amplitudes exceed a threshold for stochasticity, leading to a rapid increase of the electron temperature by several thousands of Kelvin. The results have relevance for high latitude heating experiments.

KW - ionospheric turbulence

KW - upper hybrid waves

KW - stochastic heating

UR - http://agupubs.onlinelibrary.wiley.com/agu/journal/10.1002/(ISSN)1944-799X/

U2 - 10.1002/2015RS005866

DO - 10.1002/2015RS005866

M3 - Article

VL - 51

SP - 704

EP - 717

JO - Radio Science

T2 - Radio Science

JF - Radio Science

SN - 0048-6604

IS - 6

ER -