Large-scale traveling ionospheric disturbances of auroral origin according to the data of the GPS network and ionosondes

Details Large-scale traveling ionospheric disturbances of auroral origin according to the data of the GPS network and ionosondes Large-scale traveling ionospheric disturbances of auroral origin according to the data of the GPS network and ionosondes

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008adspr..42.1213a&link_type=abstract

Advances in Space Research, Volume 42, Issue 7, p. 1213-1217.

Computer Science

4

Scientific paper

The intensity of large-scale traveling ionospheric disturbances (LS TIDs), registered using measurements of total electron content (TEC) during the magnetic storms on October 29 31, 2003, and on November 7 11, 2004, had been compared with that of local electron density disturbances. The data of TEC measurements at ground-based GPS receivers located near the ionospheric stations and the corresponding values of the critical frequency of the ionospheric F region foF2 were used for this purpose. The variations of TEC and foF2 were similar for all events mentioned above. The previous assumption that the ionospheric region with vertical extension from 150 to 200 km located near the F-layer maximum mainly contributes to the TEC variations was confirmed for the cases when the electron density disturbance at the F region maximum was not more than 50%. However, this region probably becomes vertically more extended when the electron density disturbance in the ionospheric F region is about 85%.

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