Physics
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15.1341s&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 15, Nov. 1988, p. 1341-1344.
Physics
12
High Altitude, Incoherent Scatter Radar, Radio Spectra, Velocity Measurement, Incoherent Scattering, Velocity Distribution
Scientific paper
Intense velocity shears that are unresolved within the scattering volume can distort incoherent scatter spectra in ways that could be confused with the effects of non-Maxwellian plasmas or ion hot spots. These spectra lose the usual double humped characteristic of the more familiar incoherent scatter spectral shapes, and standard analysis (ignoring velocity shears) of such spectra yields severe under estimates of the electron temperature and over estimates of the ion temperature, with an implied, but erroneous, result that Te is less than Ti. High resolution velocity measurements from the HILAT satellite demonstrate that such strong shears do exist at high latitudes.
Kelley Michael C.
Providakes James F.
Swartz Wesley E.
Vickrey James F.
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