Energetic (>6 keV) electron data from the SEEP payload on the low altitude (~200 km) polar orbiting S81-1 satellite indicate a high rate of occurrence of short duration (3) were distinctly different in several ways. For 23, narrow electron precipitation bursts (3) were observed on satellite passes within ¿50¿ of the Siple meridian, chorus was invariably detected at Siple, but correlation of electron bursts with individual chorus spectral elements was not evident. The lack of such correlation may be due to the limited spatial extent of flux tubes excited by individual chorus elements which are possibly generated without mutual coherence in multiple high altitude magnetospheric locations. Within one hour of all four of the satellite passes within 400 km of Siple with the highest rate (≥10 individual bursts per pass) of burst occurrence, overhead electron precipitation was clearly detected by ground based sensors at Siple Station.

Quasi-periodic bursts of several seconds duration were observed on one or more of the photometer, riometer, and magnetic pulsation sensors and many of these bursts were correlated with clustered VLF chorus bursts. Hence, there is at least association of chorus with electron precipitation. ¿ American Geophysical Union 1989