The dayside auroral zone as a hard target for coherent HF radars

Details The dayside auroral zone as a hard target for coherent HF radars The dayside auroral zone as a hard target for coherent HF radars

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.3717m&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 19, p. 3717-3720

Other

25

Ionosphere: Ionosphere/Magnetosphere Interactions, Ionosphere: Ionospheric Irregularities, Ionosphere: Instruments And Techniques, Radio Science: Radio Wave Propagation

Scientific paper

Observations from the CUTLASS Finland coherent HF radar on 23 February 1996 are employed to demonstrate that changes in propagation mode from 12F to 112F and back again, determined from elevation angle measurements, do not significantly alter the ranges over which ionospheric backscatter is observed. This indicates that the latitudinal extent of backscatter in the dayside auroral oval and cusp region correspond to the boundaries of geophysical processes, as opposed to limits in the illumination of the F region ionosphere by the radar. Hence, the HF radar technique is confirmed as an excellent diagnostic of the cusp and other dayside regions.

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