Dynamics of cosmic current layers with localized lower-hybrid-drift turbulence

A two-dimensional magnetohydrodynamic model of the dynamics of tail-like cu rrent layers caused by anomalous electrical resistivity in a plasma with lo wer-hybrid-drift (LHD) turbulence is considered. Additionally to the LHD-re sistivity, a resistivity pulse in the magnetic neutral sheet is given initi ating a magnetic reconnection process. Then the temporal and spatial evolut ion of the magnetic and electric fields, the plasma convection and the anom alous resistivity are obtained numerically. Taking into account more exact expressions for the LHD-resistivity in the current layer as done in former works, the LHD-turbulence is found to be excited farther from the neutral s heet, and thus, with the time, secondary current sheets are obtained in the plasma-magnetic field system. It is shown that the inductive electric fiel d moving from the magnetic neutral sheet to the current layer periphery dur ing the reconnection process may be considered as indicator of the plasma d isturbances.