Identification of the different magnetic field contributions during a geomagnetic storm in magnetospheric and ground observations

Alberti, Tommaso; Piersanti, Mirko; Vecchio, Antonio; De Michelis, Paola; Lepreti, Fabio; Carbone, Vincenzo; Primavera, Leonardo

doi:https://doi.org/10.5194/angeo-34-1069-2016

Articles | Volume 34, issue 11

https://doi.org/10.5194/angeo-34-1069-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/angeo-34-1069-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 34, issue 11

Regular paper

|

22 Nov 2016

Regular paper |

| 22 Nov 2016

Identification of the different magnetic field contributions during a geomagnetic storm in magnetospheric and ground observations

Tommaso Alberti, Mirko Piersanti, Antonio Vecchio, Paola De Michelis, Fabio Lepreti, Vincenzo Carbone, and Leonardo Primavera

Data sets

AQU magnetic observatory data INTERMAGNET http://www.intermagnet.org

The GOES magnetic field data H. Singer http://cdaweb.gsfc.nasa.gov

Short summary

We investigate the time variation of the magnetospheric and Earth's magnetic field during both quiet and disturbed periods. We identify the timescale variations associated with different magnetospheric current systems, solar-wind–magnetosphere high-frequency interactions, ionospheric processes, and internal dynamics of the magnetosphere. In addition, we propose a new local index for the identification of the intensity of a geomagnetic storm on the ground.