Review of hydromagnetic wave studies in the Antarctic.

Geomagnetic pulsations are of great interest in magnetospheric physics because, as low-frequency perturbations, they are the means by which information is transmitted throughout the magnetosphere. The appearance of these waves in magnetic field measurements - oscillation of the field in magnitude and direction - led to the terminology of "magnetic pulsations". The generation and propagation of hydromagnetic waves are determined by the structure of the magnetosphere and the processes taking place within it and in the interplanetary medium. The measurements of these waves either in space or with ground-based sensors, provides an important diagnostic tool to probe the magnetosphere and its interaction with the solar wind. This paper reviews recent progress made by ground measurements of magnetic pulsations in the Antarctic.