| ID | #1570205903 |
| Added | Fri, 04/10/2019 |
| Author | July N. |
| Sources | "Ленинградская правда", 7 октября 1979 г.
|
| Phenomena | |
| Status | Result
|
| Resume |
Initial data
"On September 24 I witnessed an interesting phenomena that was observed at Pine Glade after 23 hours. Just under the Big dipper suddenly appeared illuminated hemisphere of the red-green color. In a few minutes, it stood out a kind of "leg", which began to grow but soon, the entire hemisphere was a green Orb glowed for about 2-3 minutes. Gradually he disappeared.
Please tell us about it don't quite seem normal phenomenon of nature.
I. TOLKUNOV".
We appealed to the head of the laboratory of geomagnetic research in the Arctic and Antarctic Institute, candidate of physico-mathematical Sciences L. P. KUPENOVA. Here is what he said:
Form a kind of "crown" or "glowing hemisphere", according to the newspaper one reader took nothing like the Northern lights. Watch it could, apparently, many Leningraders, because the evening of 24 September and on the night of the 25th in the high latitudes was marked by a strong magnetic storm. This time the size of the perturbation of the magnetic field measured on the 9-point scale, almost reached its maximum and was equal to 8 points.
During the period of such disturbances from the magnetosphere into the Earth's atmosphere invaded by electrons of large energies, which cause luminescence of gases constituting the atmosphere, such as oxygen. The red color indicates a very high-energy electrons.
The most abundant "electronic rain" usually falls over Dixon, then the flow of these particles decreases rapidly to the South and more slowly to the North. The glow occurs at such a height that it is visible for several hundred miles, including in Leningrad, and even southern parts of the country.
Painted in various color rays across the sky parallel to each other, but from the Earth due to the large distances (because the rays coming from infinity), it seems to us that they emanate from one point and then can merge into a single beam. In perspective and in projection this is quite like a sphere or hemisphere, and stray from the light of the spot beam is, of course, can form a kind of "leg" mentioned I. Tolkunov. But in any case the Northern lights are an amazing spectacle and memorable.
Translated by «Yandex.Translator»
Hypotheses
Investigation
Resume
The Aurora (Northern lights)
Glow (luminescence) of the upper layers of the atmospheres of the planets with the magnetosphere due to their interaction with charged particles of the solar wind.
In a very limited area of the top of atmosphere radiance can be caused by low energy charged particles of solar wind entering the polar ionosphere over the North and South polar Caspi. In the Northern hemisphere, the cusp auroras can be observed over Svalbard caribou watch.
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