Электродинамические процессы в высоких широтах: материалы междунарордного симпозиума «Полярные геомагнитные явления», 25-31 мая 1986 г., Суздаль, СССР / Междунар. геодез. и геофиз. союз, Междунар. ассоц. геомагнетизма и аэрономии ; Акад. наук СССР, Кол. фил. им. С. М. Кирова, Поляр. геофиз. ин-т ; [редкол.: О. М. Распопов (отв. ред.). и др.]. - Апатиты : Кольский филиал АН СССР, 1988.

Figure 10.Theoretical curve of с versus ч л for a n altitude of 140 lost, together w i t h points calcu lated fr o m a beat fit curve derived fr om STARE- E ISCAT measurements by N ie lsen a nd Schlegel (1985) (from R o b i n s o n , 1986). 3 0 400 1200 electionDiift,ue(ms'O angle sensitivities (Koehler et al.,1985) and rocket measurements of irregu larity power spectra (Dickinson et al.,1985), wh i c h still require a satisfac tory explanation. OUTLOOK. This little review shows that a lot of information has been gathered about the MTSI over the past years. Nevertheless m a n y questions r emain open, particular in the interpretation of auroral radar spectra. The p ro blem is that the observation so far have all bee n performed at different times and different locations. What is needed fcr future resea r c h are m e a s u r ements of all the parameters characterising the instabilities at the same time a nd the same location. For this purpose a me asuring campaign named "ROSE" (Rocket and Scatter Experiments) v;as proposed (Rose et al.,1984). Table 1 lists the experiments wh ic h should be performed. The rockets will be launched fr o m Kiruna and A nd enes a nd the g round based facilities EISCAT and STARE will be operated simultaneously. Thus a great body of data f r o m the altitude range in question will be collected. V/e hope that the interpretation of these data will lead to a deeper understanding of the plasma instabilities of the auroral E-region. On the other hand the theoretical interpretation of auroral radar spectra will be further pursued. The ultimate goal should be here to relate the characteristics of the spectra like w i d t h and shape to physical parameters of the E-re g io n plasma as it is the case in incoherent scatter data reduction. Table 1 Rocket and ground-based experiments proposed for the ROSE-campaign PROJECT "ROSE" (Rocket and Scatter Experiments) Rocket instrumentation: Impedance Probe (n0 ) Fast R e tarding Potential Anal yz e r (T0 , 5п0 , Hz-kHz) Electric field (4 Spheres) Probe (E, 6 E, Hz-kHz) "Hirao" (modif.Langmuir) Probe (T0 ) M a gnetometer ( B , o O Neutral a nd Ion Mass Spectrometer (iIq, n Q t п^ ( 1 0 < ra.^ 60) Ground based: 2 2 E I SC A T (ne , T e , v e , v it Т±) STARE v p h , A 87