WIND OBSERVATIONS OF THE ELECTRON FORESHOCK

Observations in the electron foreshock by the WIND/SWE investigation a re presented. Between November 30 - December 28, 1994, WIND made repea ted back and forth crossings of the leading edge of the electron fores hock. We present observations during one five hour interval from this period. Foreshock crossings are readily identified in the SWE data by the onset of an enhanced flux of backstreaming electrons and by a reve rsal of the electron heat flux. The measured velocity distribution fun ctions indicate that both magnetic reflection from the bow shock and u pstream leakage through the shock are responsible for the backstreamin g electrons measured upstream. Resolved bumps are frequently observed on reduced velocity distributions and are shown to be associated with an increased electric field intensity measured by the WIND/WAVES exper iment.