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Symposium highlights results from HF interaction experiments

The high-power, high-frequency (HF) ionospheric radio facility in Tromso, Norway is used to conduct fundamental research in plasma physics, ionospheric physics, and geophysics. This facility is making possible new discoveries in the fields of space plasma physics and upper atmospheric physics. Built by the Max-Planck Institut fur Aeronomie and inaugurated on September 12, 1980, it was purposely located next to the European Incoherent Scatter Scientific Association (EISCAT) incoherent scatter radars at 931 MHz and 224 MHz. These are the primary diagnostic instruments of the perturbations produced in the ionospheric plasma by the powerful HF radio waves [Rietveld et al., 1993].