Small scale density fluctuations at homopause altitudes

Details Small scale density fluctuations at homopause altitudes Small scale density fluctuations at homopause altitudes

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esasp.183...31l&link_type=abstract

In ESA Sixth ESA Symp. on European Rocket and Balloon Programs and Related Res. p 31-37 (SEE N83-33397 21-46)

Computer Science

Atmospheric Turbulence, Energy Budgets, Homosphere, Ionospheric Ion Density, Mass Spectroscopy, Nitrogen Ions, Rocket-Borne Instruments

Scientific paper

Fluctuations of tens of meters to a few kilometers scale length of the nitrogen number densities in the altitude region 100 to 120 km were measured by two rocket-borne mass spectrometers during the Energy Budget Campaign. The observed density fluctuations are described and their power spectra are discussed as a function of altitude. An inertial subrange at 100 km altitude comprising sizes from 0.1 to 2 km is indicated. For all scale sizes 0.1 km the spectral power is considerably larger during geomagnetically quiet periods than during moderately disturbed periods. Increase in the Kolmogorov microscale above 110 km is hard to ascertain because of instrument noise.

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