Ionospheric Electron Content and Radio Scintillations During Magnetospherically Quiet Periods in 1970-71 PDF Download
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Author: Gerald S. Hawkins
Publisher:
ISBN:
Category : Computer programs
Languages : en
Pages : 40
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Book Description
Author: Gerald S. Hawkins
Publisher:
ISBN:
Category : Computer programs
Languages : en
Pages : 40
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Book Description
Author: Gerald S. Hawkins
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ISBN:
Category : Ionospheric electron density
Languages : en
Pages : 34
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Book Description
Author: Gerald S. Hawkins
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ISBN:
Category :
Languages : en
Pages : 33
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Book Description
The World Data Center A of the National Academy of Sciences selected two periods in February and December 1970 when the magnetosphere was particularly quiet so that the effects of magnetic disturbances on ionospheric and geophysical phenomena could be studied by their absence. These WDC 'quiets' were studied using AFCRL data on scintillations at 136 MHz from ATS-3 and measures of total electron content (TEC). An additional period in January 1971 was also selected when the magnetic indices were abnormally low, with the minimum daily Kp value reaching 0.0. (Modified author abstract).
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Category : Nuclear energy
Languages : en
Pages : 844
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Author: Jules Aarons
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Category : F region
Languages : en
Pages : 30
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Book Description
Updating a review of the global morphology of ionospheric scintillations published in 1971, this study adds additional experimental studies on familiar topics to newer types of measurements of ionospheric irregularities, including in situ experiments and artificial heating of the F-layer.
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Category : Cosmic physics
Languages : en
Pages : 702
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Category : Geophysics
Languages : en
Pages : 32
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Author:
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ISBN:
Category : Cosmic physics
Languages : en
Pages : 908
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Category : Aeronautics
Languages : en
Pages : 992
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Author: Eileen MacKenzie
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Category : Auroras
Languages : en
Pages : 52
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Book Description
The orbiting HiLat satellite launched in 1983 offered an opportunity for studying ionospheric scintillation parameters in relation to in-situ measurements of ionization density, drift velocity, field-aligned current, and particle precipitation during the sunspot minimum period. This report discusses results of a morphological study based on observations of scintillations and total electron content (TEC) at the auroral oval station at Tromso, Norway, during the period Dec 1983 - Oct 1985. The geometrical enhancement of scintillations observed during alignment of the propagation with the local magnetic L-shell is shown to be the most consistent and conspicuous feature of scintillations in the nighttime auroral oval. The dynamics of the spatial and temporal extent of this region are illustrated in the invariant latitude/magnetic local time grid. Steepening of phase spectral slope in the geometrical enhancement region is indicative of the presence of L-shell aligned sheet-like irregularities at long scale lengths. The seasonal variation of TEC determined from the differential Doppler measurements of HiLat transmissions is discussed in relation to the in-situ density measurements at 830 km. The results are also used to illustrate the dependence of ionospheric structure parameters on short-term variability of solar activity during the sunspot minimum period. This study provides an insight into the nature of magnetospheric coupling with the ionosphere at high latitudes.
