Aspects of layer electrodynamics inferred from high-resolution ISR observations of the 80-270 km ionosphere

Details Aspects of layer electrodynamics inferred from high-resolution ISR observations of the 80-270 km ionosphere Aspects of layer electrodynamics inferred from high-resolution ISR observations of the 80-270 km ionosphere

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.1411m&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 11, p. 1411-1414

Physics

23

Ionosphere: Midlatitude Ionosphere, Ionosphere: Ionospheric Irregularities, Ionosphere: Ionosphere/Atmosphere Interactions, Ionosphere: Electric Fields

Scientific paper

The Arecibo 430 MHz Incoherent Scatter Radar (ISR) has been used to observe vertical ionospheric electron concentration profiles in the 80-280 km altitude region at the highest sustained resolutions (150 m, 10 s) thus far reported for ``ion-line'' measurements. We present results that reveal layers and wave-like features in unprecedented detail and likely point to electrodynamic processes linking the E and F regions. Tidal Ion Layers (TILs) and sporadic E(Es) layers in the 100-110 km altitude region often display significant peaks and edges that appear in only one range gate (150 m). Also, previously unreported wave-like plasma structures-termed ``ion rain''-with ~12 minutes apparent period, normalized amplitudes of 1-3%, and vertical wavelengths in excess of 30 km have been observed extending from base of the F-layer to the evening intermediate TIL with indications of coupling into the 90-110 km region below.

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