The temperature of the ionosphere in the auroral zone ...
In the absence of man-made interference and atmospherics, it has been found possible to measure radio frequency thermal radiation from the ionosphere at medium frequencies. The temperature of the ionospheric D-region has been previously measured by this method at 2 Mc/s in temperate latitudes (Pawse...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23234777 https://figshare.utas.edu.au/articles/thesis/The_temperature_of_the_ionosphere_in_the_auroral_zone/23234777 |
| Summary: | In the absence of man-made interference and atmospherics, it has been found possible to measure radio frequency thermal radiation from the ionosphere at medium frequencies. The temperature of the ionospheric D-region has been previously measured by this method at 2 Mc/s in temperate latitudes (Pawsey, McCreddy and Gardner, 1951, and Gardner, 1954). In a companion paper (Gardner and Pawsey, 1953), the absorbing structure of the lower ionosphere was determined from D-region echoes to find the heights to which the temperatures applied. However, it was felt that conditions might be very different in an auroral zone. Echoes from the D6-region (apparently) of much greater intensity and at only half the height of those observed by the above authors, were reported at Macquarie Island which is close to the centre of the auroral zone. Experiments were carried out by the author at the Australian National Antarctic Research Station at Macquarie Island as a member of the 1956 party. The apparent D-region echoes mentioned ... |
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