Simultaneous observations of E-region coherent backscatter and electric field amplitude at F-region heights with the Millstone Hill UHF radar

Details Simultaneous observations of E-region coherent backscatter and electric field amplitude at F-region heights with the Millstone Hill UHF radar Simultaneous observations of E-region coherent backscatter and electric field amplitude at F-region heights with the Millstone Hill UHF radar

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3177f&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 19, p. 3177-3180

Computer Science

Sound

32

Ionosphere: Ionospheric Disturbances, Ionosphere: Ionospheric Irregularities, Ionosphere: Plasma Temperature And Density, Ionosphere: Plasma Waves And Instabilities

Scientific paper

A combined coherent backscatter-incoherent scatter experiment with the Millstone Hill UHF radar provided simultaneous observations of electric field magnitude and coherent backscatter parameters on the same L shell. A carefully-designed geometry used sidelobe coherent contamination from two-stream irregularities at 110 km altitude, appearing at ranges corresponding to F-region altitudes in the main beam, in conjunction with simultaneous uncontaminated F-region observations of the E×B drift velocity in adjacent range gates. Both logarithmic coherent power and the magnitude of the coherent phase velocity Vph vary linearly with |E|. With the assumption that the coherent phase velocity is approximately the perturbed ion sound speed in the heated E region, we find an excellent agreement between the electron temperature inferred from Vph and previous incoherent-scatter results relating E-region Te to E. A maximum value of ~3100 K has been found for such wave-induced E-region heating.

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