Auroral enhancement of ionospheric electron density

Bates, Howard F.

doi:10.1016/0021-9169(70)90127-3

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…To what extent the cleft precipitation affects the structure of the F layer as seen in synoptic plots is a more complicated question, because of the averaging that must be done and because of the presence of other effects. Various authors have advanced arguments about the cause of the observed diurnal changes in the high-latitude ionosphere [e.g., Duncan, 1962;Sato and Rourke, 1964;King et al, 1968;Maehlum, 1969;Bates, 1970;Challinor, 1970;Eccles, 1973], and a prominent suggestion has been that particle precipitation is important.…”

Section: Bottom Sine Observ^t•onsmentioning

confidence: 99%

The magnetospheric cleft-Ionospheric effects

Whitteker¹

1976

J. Geophys. Res.

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The fluxes of electrons that precipitate through the day side clefts of the magnetosphere are intense enough and deposit their energy at a high enough altitude to heat and ionize the F layer and top side ionosphere substantially. Relevant synoptic results from bottom side and top side sounder measurements are reviewed, and new data from the Isis satellites are presented. The effects of precipitation through the cleft can be seen in bottom side ionograms, but the diurnal variations that appear in routine monthly median plots are probably due primarily to other effects. As seen from above the F layer by the top side sounders on Alouette and Isis spacecraft, the most obvious effects are an expansion (increase in scale height) of the top side ionosphere due to heating and the presence of small‐scale spatial fluctuations in density. The electron density at the F layer peak is often, but not always, increased. The increased electron density at satellite altitudes associated with top side expansion is often seen at a slightly higher latitude than the precipitation, and this displacement in latitude (of ∼1°) is interpreted in terms of an antisunward drift due to magnetospheric convection.

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Section: Bottom Sine Observ^t•onsmentioning

confidence: 99%

The magnetospheric cleft-Ionospheric effects

Whitteker¹

1976

J. Geophys. Res.

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“…In the ionospheric F2 region, perh•ps the most prominent effect of • storm is rM l•titudes [Bates, 1970;Heikkila et al, 1972].…”

Section: Introductionmentioning

confidence: 99%

“…Some basic aspects of the morphology of ionospheric storms are well known. After its commencement with magnetic disturbances, a storm exhibits a short positive phase with enhanced electron density and total electron content, then switches to a negative phase characterized by electron density depletion, and finally concludes in a recovery phase with all quantities return-rM l•titudes [Bates, 1970;Heikkila et al, 1972].…”

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confidence: 99%