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Pc3-4 pulsations observed at high-latitudes have been examined for evidence of magnetic field line resonances. Previous studies have suggested that these pulsations are due to harmonics of the lower frequency Pc5 pulsations.
High-resolution Fabry-Perot spectrometer observations of the OH(62) Q1(1) line, l834.46 nm, were made at Mawson, 67.6ºS 62.9ºE, and Davis, 68.6ºS 78.0ºE, Antarctica, in 1997. The observing program resulted in three sets of continuous OH observations suitable for tidal analysis: July 25…
The so-called ionosonde drift technique of determining ionospheric velocities from angle-of-arrival and Doppler shift measurements is now well established. In the standard digital ionosonde technique, commonly called the drift mode…
Ionospheric Total Electron Content (TEC) determined from July 1991 to June 1995 is examined from southern Australia using Global Positioning System (GPS) satellite data recorded by the Defence Science and Technology Organisation at Salisbury, South Australia.
During 1997 and early 1998 a series of campaigns were undertaken at the Australian Antarctic polar cap station Casey (-80.8o geomagnetic latitude) with the aim of identifying and gaining further understanding of polar patches.
A UMLCAR ( University of Massachusetts Lowell, Centre for Atmospheric Research) Digital Ionosonde (DPS-4) has operated at the Australian Antarctic polar cap station Casey (80.8oS geomagnetic latitude) since early 1993, primarily to study the dynamics of the southern polar cap ionosphere.
Vertical geoelectric eld measurements at Vostok,Antarctica (78:5ºS ;107ºE;corrected geomagnetic latitude,83:4ºS) made during 1998 are compared with both Weimer (1996)and IZMEM (1994)model calculations of the solar-wind-induced, polar-cap potential di erences with respect to the station.