On some features characterizing the plasmasphere-magnetosphere-ionosphere system during the geomagnetic storm of 27 May 2017

Michael Pezzopane; Afredo Del Corpo; Mirko Piersanti; Claudio Cesaroni; Alessio Pignalberi; Simone Di Matteo; Luca Spogli; Massimo Vellante; Balazs Heilig

doi:10.1186/s40623-019-1056-0

On some features characterizing the plasmasphere-magnetosphere-ionosphere system during the geomagnetic storm of 27 May 2017

Earth Planets Space. 2019;71(1):77. doi: 10.1186/s40623-019-1056-0. Epub 2019 Jul 17.

Authors

Michael Pezzopane¹, Afredo Del Corpo², Mirko Piersanti³, Claudio Cesaroni¹, Alessio Pignalberi¹, Simone Di Matteo², Luca Spogli^{1

4}, Massimo Vellante², Balazs Heilig⁵

Affiliations

¹ 1Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Rome, Italy.
² 2Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy.
³ 3National Institute of Nuclear Physics, University of "Tor Vergata", Via della ricerca scientifica 1, 00133 Rome, Italy.
⁴ SpacEarth Technology, Via di Vigna Murata 605, 00143 Rome, Italy.
⁵ 5Mining and Geological Survey of Hungary, Columbus Street 17-23, Budapest, 1145 Hungary.

Abstract

This paper presents how the magnetosphere-plasmasphere-ionosphere system was affected as a whole during the geomagnetic storm peaking on 27 May 2017. The interplanetary conditions, the magnetospheric response in terms of the magnetopause motion, and the ionospheric current flow pattern were investigated using data, respectively, from the WIND spacecraft, from GOES15, GOES13, THEMIS E, THEMIS D and THEMIS A satellites and from the INTERMAGNET magnetometer array. The main objective of the work is to investigate the plasmaspheric dynamics under disturbed conditions and its possible relation to the ionospheric one; to reach this goal, the equatorial plasma mass densities derived from geomagnetic field line resonance observations at the European quasi-Meridional Magnetometer Array (EMMA) and total electron content values obtained through three GPS receivers close to EMMA were jointly considered. Despite the complexity of physical mechanisms behind them, we found a similarity between the ionospheric and plasmaspheric characteristic recovery times. Specifically, the ionospheric characteristic time turned out to be ~ 1.5 days, ~ 2 days and ~ 3.1 days, respectively, at L ~ 3, L ~ 4 and L ~ 5, while the plasmaspheric one, for similar L values, ranged from ~ 1 day to more than 4 days.

Keywords: Geomagnetic field line resonances; Geomagnetic storm; IRI UP method; Ionospheric currents; Magnetopause crossing; Magnetopause motion; Plasmasphere dynamics; Total electron content.