Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes

Details Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jatp...45..175h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 45, Feb.-Mar. 1983, p. 175-179.

Physics

17

Auroral Zones, Equatorial Atmosphere, F Region, Magnetic Storms, Riometers, Traveling Ionospheric Disturbances, Atmospheric Attenuation, Spread F

Scientific paper

A comparison of standard riometer data from a southern auroral station with ionograms obtained at five stations positioned from sub-auroral to equatorial latitudes is presented. It is found that the rapid onset in riometer absorption, during intense substorm activities in an equinoctial period, was associated with a sequential propagation of ionospheric disturbances deduced from the F-region parameters virtual height and range spread-F. The time shift between absorption maxima and extrapolated commencement times of the disturbances was determined to be consistent with the presence of large-scale traveling ionospheric disturbances (TID), propagating equatorwards with velocities lying typically in the range 600-900 m/s, and with a median velocity of 720 m/s. These results indicate that the onset of TIDs is associated with high-energy particle precipitation, manifested by the occurrence of auroral absorption events. Results of a previous riometer study indicate that large-scale TIDs are simultaneously generated in both hemispheres.

Affiliated with

Also associated with

No associations

Rating

Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auroral riometer absorptions and the F-region disturbances observed over a wide range of latitudes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1467703