Computer Science – Sound
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.590..595s&link_type=abstract
In: 17th ESA Symposium on European Rocket and Balloon Programmes and Related Research, 30 May - 2 June 2005, Sandefjord, Norway.
Computer Science
Sound
Plasma Instability, Neutral Density Fluctuations
Scientific paper
From 29 June to 7 July 2003, the German-Norwegian ROMA-SVALRAK campaign (ROMA = Rocket borne Observations in the Middle Atmosphere) took place at the SVALRAK rocket range, Ny-Ålesund (79°N). During this campaign three instrumented sounding rockets were launched. During all three flights, rocketborne instruments recorded prominent small scale fluctuations above an altitude of ~90 km indicative of plasma instability processes. In the current paper we discuss these observations of small scale plasma structures in the lower E-region in detail. Finally, we consider strong and high frequency small scale neutral density fluctuations measured during the first rocket flight between altitudes of 90 km up to the apogee of ~106 km. We demonstrate that these fluctuations can not be due to neutral air turbulence and we discuss the possibility that these neutral density fluctuations could have been created by a plasma instability process.
Blix Tom Arild
Friedrich Martin
Rapp Markus
Strelnikov Boris
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