Magnetospheric wind.
An experiment designed to detect the bulk flow of cool plasma within the magnetosphere has been flown on the ATS-1 (Applications Technology Satellite) synchronous satellite. This experiment has yielded evidence for gusts of streaming positive ions in the magnetospheric equatorial plane. This directed ion flow is interpreted as the result of large-scale electric fields of the order of several millivolts per meter.
Freeman
J W
JW