Scientific Highlights since 1993

Michael T. Rietveld

EISCAT N-9027 Ramfjordmoen, Norway
also at Max-Planck-Institut für Aeronomie, D-37191 Katlenburg-Lindau, Germany

Several new discoveries have been made in the field of HF-interactions since the transfer of the facility from the Max-Planck Institute to EISCAT in 1993. They are in diverse areas such as E-region heating or cooling, Pc-1 micropulsation generation, the effect of enhanced electron temperature on VHF radar Polar Mesospheric Summer Echoes, Artificial Periodic Irregularities, HF-induced airglow, electron heating in the F-region, and magnetic-field-aligned effects in Langmuir turbulence as well as electron heating. Our knowledge in other areas, such as ELF/VLF wave generation, SEE emissions, and the generation of striations, has also improved. Many of these new results come from the application of new or refined measurement techniques.