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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 26, issue 12
Ann. Geophys., 26, 3669-3676, 2008
https://doi.org/10.5194/angeo-26-3669-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: STAMMS: Spatio-Temporal Analysis and Multipoint Measurements...

Ann. Geophys., 26, 3669-3676, 2008
https://doi.org/10.5194/angeo-26-3669-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  20 Nov 2008

20 Nov 2008

Formation of current density profile in tilted current sheets

A. A. Petrukovich1, W. Baumjohann2, R. Nakamura2, and A. Runov2,* A. A. Petrukovich et al.
  • 1Space Research Institute, 84/32 Profsoyuznaya st., Moscow, 117997, Russia
  • 2Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, 8042 Graz, Austria
  • *now at: Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, CA-90095, USA

Abstract. We investigate Cluster observations of strongly tilted sheets (flapping events) in the magnetotail. In accordance with the simple model of slip deformation (vertical differential displacement of neighboring flux tubes), the Jy current density component in the tilted sheet remains constant and equal to that in the horizontal undisturbed sheet. However, a substantial Jz component appears proportional to the local sheet tilt. Slip-type variations, having smaller scale than the full crossing, locally change the tilt and Jz and may thus create a variety of non-classical (bifurcated, asymmetric etc) current density profiles.

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