Journal cover Journal topic
Annales Geophysicae Sun, Earth, planets, and planetary systems An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/angeo-2018-9
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Regular paper
02 Feb 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Annales Geophysicae (ANGEO).
Statistical survey of day-side magnetospheric current flow using Cluster observations: Bow shock
Evelyn Liebert, Christian Nabert, and Karl-Heinz Glassmeier Institut für Geophysik und extraterrestrische Physik, Technische Universtität Braunschweig
Abstract. We present the first comprehensive statistical survey of the day-side terrestrial bow shock current system based on a large number of Cluster spacecraft bow shock crossings. Calculating the 3-D current densities using Fluxgate Magnetometer data and the Curlometer technique enables the investigation of current locations, directions and magnitudes in dependence on arbitrary IMF orientation. In case of quasi-perpendicular shock geometries we find that the current properties are in good accordance to theory and existing simulation results. However, currents at quasi-parallel shock geometries next to the foreshock region underlie distinct variations regarding their directions.
Citation: Liebert, E., Nabert, C., and Glassmeier, K.-H.: Statistical survey of day-side magnetospheric current flow using Cluster observations: Bow shock, Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2018-9, in review, 2018.
Evelyn Liebert et al.
Evelyn Liebert et al.
Evelyn Liebert et al.

Viewed

Total article views: 292 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
229 45 18 292 4 17

Views and downloads (calculated since 02 Feb 2018)

Cumulative views and downloads (calculated since 02 Feb 2018)

Viewed (geographical distribution)

Total article views: 291 (including HTML, PDF, and XML)

Thereof 289 with geography defined and 2 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 23 May 2018
Publications Copernicus
Download
Short summary
At the bow shock the solar wind is slowed down in front of Earth's magnetosphere. This is accompanied by a gain in strength of the magnetic field which implies that the bow shock carries electric currents. We present the first comprehensive statistical study of bow shock currents making use of multi-point data collected by Cluster spacecraft. We find that the currents depend on the shock geometry and the interplanetary magnetic field and are in good accordance to theory and simulation result.
At the bow shock the solar wind is slowed down in front of Earth's magnetosphere. This is...
Share