Possible solar eclipse effect 23 October 1976

A physical process whereby a hydromagnetic oscillation of a magnetic line of force passing through the auroral zones gives rise to a system of ionospheric currents is described in this paper. Geomagnetic micropulsations, at least in middle and low latitudes, are claimed to be due to ionospheric currents thus produced. Observational evidence in support of this viewpoint for micropulsations in the daylight hemisphere is provided by the solar eclipse effect that the intensity of micropulsations is weakened in the eclipsed zone. The phase relationship between micropulsations in the north–south component and oscillations in the received frequency of a radio wave which is emitted from a station with a stable frequency of the order of several to tens of megacycles, and is propagated through the ionosphere, is correctly interpreted by the above theory.

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Solar eclipse effect on sporadicEionization, 2

Journal of Geophysical Research Atmospheres ◽

10.1029/ja078i001p00320 ◽

1973 ◽

Vol 78 (1) ◽

pp. 320-322 ◽

Cited By ~ 11

Author(s):

R. N. Datta

Keyword(s):

Solar Eclipse ◽

Eclipse Effect

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The solar eclipse effect on diffusion processes of O+ + O2 → O2+ + O reaction for the upper ionosphere over Kharkov

Thermal Science ◽

10.2298/tsci200619007y ◽

2021 ◽

Vol 25 (Spec. issue 1) ◽

pp. 57-63

Author(s):

Mehmet Yasar

Keyword(s):

Solar Eclipse ◽

High Frequency ◽

Diffusion Processes ◽

Frequency Wave ◽

Self Diffusion ◽

The Earth ◽

Source Of Information ◽

Eclipse Effect ◽

Self Diffusion Coefficient ◽

Upper Ionosphere

The Sun is the most effective factor in determining all processes in the ionosphere. For this reason, examining the effect of solar eclipses on the earth ionosphere provides a very important source of information about sudden and medium-scale changes in the ionosphere structure during a solar eclipse. In this study, the effect of solar eclipse on March 29, 2006 in Kharkov on self-diffusion of O+ + O2 ? O2+ + O reaction was investigated depending on the altitude (202, 252, and 303 km). As a result of the investigation, the minimum value of self-diffusion coefficient was seen at three altitudes on March 29, 2006 at the time of full covering in the solar. Self-diffusion coefficients were found to increase with increasing altitude. The results of the experimental study conducted to examine the effect of the eclipse on the ionosphere using high frequency wave propagation in Turkey where it was seen total eclipse on March 29, 2006 and the result that we obtained in this research are consistent with each other.

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