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- W2090922747 abstract "Experiments with radio waves, such as the measurements of the skip-distances, the time-intervals for short radio pulses to travel up to the high atmosphere and return, the polarization and the absorption of the waves, have shown that the regions of the high atmosphere above 100 km are heavily ionized, the maximum ionization being at about 200 km above sea-level. The radio waves indicated that during the daytime the density of the ions was about 107 at 100 km and increased with the height, and that the electronic density was around 103 at 100 km and increased with the height to about 3×105 at 200 km. At night the ionization appeared to separate into two separate banks, one at about 120 km with about 3×107 ions and one at a higher level with about 109 ions or 5×104 electrons. The diurnal variation of the magnetic field of the Earth is attributed to the diamagnetic effects of the ionization and indicated a total number of about 1.9×1016 ions in a 1-cm2 vertical column up through the atmosphere which would amount to an ion density of 4.7×109 in the levels from 150 to 190 km at noon at the equator; the ionization at night was about ⅙ of that during the day. Further than this the exact distribution of the ions and electrons with height and the manner in which the distribution changes during the day and the night can not be derived from the data of radio and terrestrial magnetism which are available at the present time." @default.
- W2090922747 created "2016-06-24" @default.
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- W2090922747 date "1932-01-01" @default.
- W2090922747 modified "2023-09-24" @default.
- W2090922747 title "On calculations of the ionization in the upper atmosphere" @default.
- W2090922747 doi "https://doi.org/10.1029/tr013i001p00159" @default.
- W2090922747 hasPublicationYear "1932" @default.
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