Formation of current density profile in tilted current sheets
- 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.