Novel technology for detecting atmospheric disturbances using GPS. Instantaneous response of the ionosphere to a sudden commencement of the strong magnetic storms
| Autor: | E. A. Kosogorov, Edward L. Afraimovich, O. S. Lesyuta, L.A. Leonovich, I. I. Ushakov |
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| Rok vydání: | 2001 |
| Předmět: |
Atmospheric Science
Total electron content Meteorology business.industry Oscillation TEC Phase (waves) Aerospace Engineering Astronomy and Astrophysics Latitude Geophysics Space and Planetary Science Global Positioning System Range (statistics) General Earth and Planetary Sciences Environmental science Ionosphere business |
| Zdroj: | Advances in Space Research. 27:1345-1350 |
| ISSN: | 0273-1177 |
| Popis: | We developed a new technology for global detection of atmospheric disturbances, on the basis of phase measurements of the total electron content (TEC) using the international GPS network. Temporal dependencies of TEC are obtained for a set of spaced receivers of the GPS network simultaneously for the entire set of visible satellites. These series are subjected to filtering in the selected range of oscillation periods using known algorithms for spatiotemporal analysis of signals. An “instantaneous” ionospheric response to the sudden commencement of the strong magnetic storms were detected. On the dayside of the Earth the largest value of the net response amplitude was found to be of order 0.4 TECU (2–3 % of the background TEC value), and the delay with respect to the SSC in mid-latitudes was about 360 s. In higher latitudes the delay goes up to 15 min. On the nightside these values are 0.2 TECU and 30 min, respectively. The velocity of the traveling disturbance from the middle to high latitudes on the dayside as well as from the dayside to the nightside was about 10–20 km/s. |
| Databáze: | OpenAIRE |
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