scholarly journals Investigation of sudden electron density depletions observed in the dusk sector by the Poker Flat, Alaska incoherent scatter radar in summer

2014 ◽  
Vol 119 (12) ◽  
Author(s):  
P. G. Richards ◽  
M. J. Nicolls ◽  
J.‐P. St.‐Maurice ◽  
L. Goodwin ◽  
J. M. Ruohoniemi
Keyword(s):  
Electron Density ◽  
Incoherent Scatter Radar ◽  
Incoherent Scatter ◽  
Scatter Radar ◽  
Dusk Sector

scholarly journals Variations of topside ionospheric scale heights over Millstone Hill during the 30-day incoherent scatter radar experiment

2007 ◽  
Vol 25 (9) ◽  
pp. 2019-2027 ◽  
Author(s):  
L. Liu ◽  
W. Wan ◽  
M.-L. Zhang ◽  
B. Ning ◽  
S.-R. Zhang ◽  
...  
Keyword(s):  
Electron Density ◽  
Thermal Structure ◽  
Plasma Temperature ◽  
Scale Height ◽  
Incoherent Scatter Radar ◽  
Density Profiles ◽  
Incoherent Scatter ◽  
Scatter Radar ◽  
Vertical Scale ◽  
Electron Density Profiles

Abstract. A 30-day incoherent scatter radar (ISR) experiment was conducted at Millstone Hill (288.5° E, 42.6° N) from 4 October to 4 November 2002. The altitude profiles of electron density Ne, ion and electron temperature (Ti and Te), and line-of-sight velocity during this experiment were processed to deduce the topside plasma scale height Hp, vertical scale height VSH, Chapman scale height Hm, ion velocity, and the relative altitude gradient of plasma temperature (dTp/dh)/Tp, as well as the F2 layer electron density (NmF2) and height (hmF2). These data are analyzed to explore the variations of the ionosphere over Millstone Hill under geomagnetically quiet and disturbed conditions. Results show that ionospheric parameters generally follow their median behavior under geomagnetically quiet conditions, while the main feature of the scale heights, as well as other parameters, deviated significantly from their median behaviors under disturbed conditions. The enhanced variability of ionospheric scale heights during the storm-times suggests that the geomagnetic activity has a major impact on the behavior of ionospheric scale heights, as well as the shape of the topside electron density profiles. Over Millstone Hill, the diurnal behaviors of the median VSH and Hm are very similar to each other and are not so tightly correlated with that of the plasma scale height Hp or the plasma temperature. The present study confirms the sensitivity of the ionospheric scale heights over Millstone Hill to thermal structure and dynamics. The values of VSH/Hp tend to decrease as (dTp/dh)/Tp becomes larger or the dynamic processes become enhanced.

Comparative study of COSMIC/FORMOSAT-3, Irkutsk incoherent scatter radar, Irkutsk Digisonde and IRI model electron density vertical profiles

2017 ◽  
Vol 60 (2) ◽  
pp. 452-460 ◽  
Author(s):  
K.G. Ratovsky ◽  
A.V. Dmitriev ◽  
A.V. Suvorova ◽  
A.A. Shcherbakov ◽  
S.S. Alsatkin ◽  
...  
Keyword(s):  
Comparative Study ◽  
Electron Density ◽  
Vertical Profiles ◽  
Incoherent Scatter Radar ◽  
Iri Model ◽  
Incoherent Scatter ◽  
Scatter Radar

scholarly journals Irkutsk Incoherent Scatter Radar: history, present and future

2019 ◽  
Vol 10 (2) ◽  
pp. 215-224 ◽  
Author(s):  
Andrey V. Medvedev ◽  
Alexander P. Potekhin
Keyword(s):  
Electron Density ◽  
Measurement Techniques ◽  
Polarization Plane ◽  
Plasma Electron ◽  
Scattered Signal ◽  
Incoherent Scatter Radar ◽  
Operating Modes ◽  
Incoherent Scatter ◽  
Scatter Radar ◽  
Original Measurement

Abstract. The article focuses on the history of ionospheric research using the incoherent scatter method at the Institute of Solar-Terrestrial Physics and development of the only incoherent scatter radar in Russia, which is located near Irkutsk. It describes the radar features and the current situation of research at the Irkutsk Incoherent Scatter Radar (IISR). Operating modes and types of measurements of the radar are specified. There is a brief description of the original measurement techniques that were developed considering the IISR features such as the frequency principle of scanning and receiving of one linear polarization of a scattered signal. The main feature of the IISR is the possibility of obtaining absolute values of the ionospheric plasma electron density. The automatic method for constructing the electron density vertical profile is based on registration of vertical profiles of a rotation phase of the polarization plane of a scattered signal. The method does not require calibration with additional facilities.

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