Interhemispheric Transport of the Ionospheric F Region Plasma During the 2009 Sudden Stratosphere Warming

2020 ◽  
Vol 47 (6) ◽  
Author(s):  
Ruilong Zhang ◽  
Libo Liu ◽  
Huixin Liu ◽  
Huijun Le ◽  
Yiding Chen ◽  
...  
Keyword(s):  
F Region ◽  
Interhemispheric Transport ◽  
Region Plasma

scholarly journals Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith

2020 ◽  
Vol 38 (2) ◽  
pp. 297-307 ◽  
Author(s):  
Thomas B. Leyser ◽  
Björn Gustavsson ◽  
Theresa Rexer ◽  
Michael T. Rietveld
Keyword(s):  
Electron Temperature ◽  
Pump Beam ◽  
Electron Heating ◽  
Incoherent Scatter ◽  
F Region ◽  
Left Handed ◽  
Parameter Values ◽  
Uhf Radar ◽  
Region Plasma ◽  
Magnetic Zenith

Abstract. High-frequency electromagnetic pumping of ionospheric F-region plasma at high and mid latitudes gives the strongest plasma response in magnetic zenith, antiparallel to the geomagnetic field in the Northern Hemisphere. This has been observed in optical emissions from the pumped plasma turbulence, electron temperature enhancements, filamentary magnetic field-aligned plasma density irregularities, and in self-focusing of the pump beam in magnetic zenith. We present results of EISCAT (European Incoherent SCATter association) Heating-induced magnetic-zenith effects observed with the EISCAT UHF incoherent scatter radar. With heating transmitting a left-handed circularly polarized pump beam towards magnetic zenith, the UHF radar was scanned in elevation in steps of 1.0 and 1.5∘ around magnetic zenith. The electron energy equation was integrated to model the electron temperature and associated electron heating rate and optimized to fit the plasma parameter values measured with the radar. The experimental and modelling results are consistent with pump wave propagation in the L mode in magnetic zenith, rather than in the O mode.

Relationship between generation of equatorial F-region plasma bubbles and thermospheric dynamics

1995 ◽  
Vol 16 (5) ◽  
pp. 117-120 ◽  
Author(s):  
P.R Fagundes ◽  
Y Sahai ◽  
J.A Bittencourt ◽  
H Takahashi
Keyword(s):  
Plasma Bubbles ◽  
F Region ◽  
Thermospheric Dynamics ◽  
Region Plasma

scholarly journals Comparison of the orientation of small-scale electron density irregularities and F region plasma flow direction

2000 ◽  
Vol 18 (8) ◽  
pp. 918-926 ◽  
Author(s):  
E. D. Tereshchenko ◽  
B. Z. Khudukon ◽  
M. O. Kozlova ◽  
O. V. Evstafiev ◽  
T. Nygrén ◽  
...  
Keyword(s):  
Plasma Flow ◽  
Flow Direction ◽  
Small Scale ◽  
Incoherent Scatter ◽  
F Region ◽  
Anisotropy Parameters ◽  
Electron Density Irregularities ◽  
Region Plasma ◽  
Good Agreement ◽  
Field Aligned Irregularities

Abstract. Results are shown from an experimental campaign where satellite scintillation was observed at three sites at high latitudes and, simultaneously, the F region plasma flow was measured by the nearby EISCAT incoherent scatter radar. The anisotropy parameters of field-aligned irregularities are determined from amplitude scintillation using a method based on the variance of the relative logarithmic amplitude. The orientation of the anisotropy in a plane perpendicular to the geomagnetic field is compared with the direction of F region plasma flow. The results indicate that in most cases a good agreement between the two directions is obtained.Key words: Ionosphere (auroral ionosphere; ionospheric irregularities)

Analysis of incoherent scatter radar data from non-thermal F-region plasma

1989 ◽  
Vol 51 (6) ◽  
pp. 483-495 ◽  
Author(s):  
K. Suvanto ◽  
M. Lockwood ◽  
K.J. Winser ◽  
A.D. Farmer ◽  
B.J.I. Bromage
Keyword(s):  
Radar Data ◽  
Incoherent Scatter Radar ◽  
Incoherent Scatter ◽  
F Region ◽  
Scatter Radar ◽  
Region Plasma
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