Impulsive short-period magnetic field fluctuations (Pi 1) observed by ground instrumentation in the morning sector auroral zone have in recent years been convincingly tied to the presence overhead of pulsating aurora. We here present simultaneous records from ground-based magnetometer, photometer, and riometer instrumentation at Siple, Antarctica, and its conjugate point, Roberval, Quebec, and low-altitude particle and magnetic and electric field data from the DE-2 spacecraft. Satellite magnetometer observations support earlier findings of a link between morning sector Pi 1 and the presence of a region 2 Birkeland current sheet. The addition of energetic electron and electric field observations provides a more complete characterization of the environment of Pi 1 pulsation events. Intense fluxes of energetic electrons (from 10 keV to over 35 keV) are observed simultaneously with Pi 1 pulsations and region 2 Birkeland currents. When intense (>10-5 ergs/cm2 s sr eV) fluxes of lower energy electrons (E<1 keV) are also present, we observe strong region 2 Birkeland currents and strong Pi 1 pulsations; when lower energy electrons are less abundant, region 2 Birkeland currents and Pi 1 pulsations are considerably weaker. No Pi 1 pulsations have been found in regions without intense fluxes of energetic electrons. Simultaneous observations of magnetic and electric fields in space indicate complex localized current and field structures, which are likely to be the source of the magnetic pulses observed on the ground.