Review of hydromagnetic wave studies in the Antarctic

High-latitude ULF waves at all frequencies are reviewed with emphasis on simultaneous measurements in both hemispheres. The seasonal variation of interhemisphere high-latitude data is valuable in helping to understand the topology of the magnetosphere. The frequent occurance of Pc 1-2 pulsations at high latitudes and in the polar cap is discussed. Evidence for ground detection of flux transfer events via magnetic pulsations is reviewed. The correlation of high-latitude pulsation data with other ground techniques of measuring particle precipitation is presented to better define the subset of high-latitude ULF that is produced by local current systems fed by particle precipitation and field-aligned currents. Finally, simultaneous ground and spacecraft measurements of ULF are reviewed which provide information on the propagation of ULF across such boundaries as the magnetopause and the ionosphere.