Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 35, issue 6
Articles | Volume 35, issue 6
https://doi.org/10.5194/angeo-35-1309-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/angeo-35-1309-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 35, issue 6
Regular paper
 | 
07 Dec 2017
Regular paper |  | 07 Dec 2017

Total electron content responses to HILDCAAs and geomagnetic storms over South America

Patricia Mara de Siqueira Negreti, Eurico Rodrigues de Paula, and Claudia Maria Nicoli Candido

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The total electron content (TEC) is being extensively used to monitor the ionospheric behavior under geomagnetically quiet and disturbed conditions. The TEC presents significant changes during geomagnetic disturbed periods, causing degradation of signals in navigation systems and satellite communication. The geomagnetically disturbed periods occur due to enhanced solar activity and we show that the TEC presents intensifications not only during geomagnetic storms but also during HILDCAA events.
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