Articles | Volume 26, issue 12
https://doi.org/10.5194/angeo-26-3669-2008
https://doi.org/10.5194/angeo-26-3669-2008
20 Nov 2008
 | 20 Nov 2008

Formation of current density profile in tilted current sheets

A. A. Petrukovich, W. Baumjohann, R. Nakamura, and A. Runov

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.