| Influence of the Ionosphere on the Observation of the Mid-Latitude Pi2 Pulsations at the Global Scale |
| |
| 作者姓名： | R.A.Rakhmatulin A.Y.Pashinin |
| |
| 作者单位： | Institute of Solar-Terrestrial Physics，Siberian Branch，Russian Academy of Sciences，Irkutsk 664033，Russia，Institute of Solar-Terrestrial Physics，Siberian Branch，Russian Academy of Sciences，Irkutsk 664033，Russia |
| |
| 基金项目： | Supported by the China-Russia Joint Research Center on Space Weather,Chinese Academy of Sciences |
| |
| 摘 要： | Results of our investigation showed that occurrence frequency of Pi2 over a 24 hour period undergoes seasonal variations in time coincidence with f0F2. In the winter months, at sunrise and sunset (when f0F2 gradients are the largest) the observation probability of these oscillations is minimal. At periods of summer solstice when the F2-layer persists almost round the clock, no effect of Pi2 pulsation attenuation is observed at sunrise and sunset. The pulsation amplitudes behave in a similar manner. Results of this study suggest the conclusion that the propagation of signal from the Pi2 sourse into the mid-latitudes, and also the parameters of these pulsations are essentially affected by electron density in the ionospheric F2-layer.
|
| 关 键 词： | Pi2 电离层 纬度 电子总量 地磁 |
Influence of the Ionosphere on the Observation of the Mid-Latitude Pi2 Pulsations at the Global Scale |
| |
| R.A.Rakhmatulin,A.Y.Pashinin.Influence of the Ionosphere on the Observation of the Mid-Latitude Pi2 Pulsations at the Global Scale[J].Chinese Journal of Space Science,2005,25(5):447-449. |
| |
| Authors: | R A Rakhmatulin AY Pashinin |
| |
| Institution: | Institute of Solar- Terrestrial Physics, Siberian Branch, Russian Academy of Sciences, Irkutsk 664033, Russia |
| |
| Abstract: | Results of our investigation showed that occurrence frequency of Pi2 over a 24 hour period undergoes seasonal variations in time coincidence with f0F2. In the winter months, at sunrise and sunset (when f0F2 gradients are the largest) the observation probability of these oscillations is minimal. At periods of summer solstice when the F2-layer persists almost round the clock, no effect of Pi2 pulsation attenuation is observed at sunrise and sunset. The pulsation amplitudes behave in a similar manner. Results of this study suggest the conclusion that the propagation of signal from the Pi2 sourse into the mid-latitudes, and also the parameters of these pulsations are essentially affected by electron density in the ionospheric F2-layer. |
| |
| Keywords: | Pi2 Ionosphere |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
