High-latitude F region electron concentration measurements near noon: A case study

Details High-latitude F region electron concentration measurements near noon: A case study High-latitude F region electron concentration measurements near noon: A case study

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.7723p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. A5, p. 7723-7729

Physics

6

Atmospheric Physics, Electron Density (Concentration), Electron Plasma, F Region, Plasma Drift, Convection, E Region, Electric Fields, Ionosondes, Particle Precipitation, Particle Trajectories, Southern Hemisphere

Scientific paper

A case study is presented of a ridge of enhanced F region plasma in the afternoon sector near the equatorward edge of the auroral oval. The study for September 26, 1982, principally exploits data from three ionosondes near 62 deg invariant latitude in the southern hemisphere separated by 5 1/2 hours of local time but only 3 1/2 hours of magnetic time. These observations demonstrate that the ridge structure is better ordered in magnetic time than in local time. Each station observes the ridge for about 4 hours. The poleward part of the ridge is rich in small-scale (1-10 km) ionospheric irregularities. It is suggested that the entire ridge is formed by the mechanism described by Foster (1993) in which plasma initialyy corotates past noon at lower latitudes, before being entrained in the convection pattern in the afternoon sector, and brought back toward noon. The plasma thus has an extended trajectory in sunlight leading to high concentrations. The irregularities probably result from the combined effects of high electric fields and energetic particle precipitation. The contribution which this plasma is likely to make to plasma structures in the polar cap is discussed briefly.

Affiliated with

Also associated with

No associations

Rating

High-latitude F region electron concentration measurements near noon: A case study 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 High-latitude F region electron concentration measurements near noon: A case study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-latitude F region electron concentration measurements near noon: A case study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1061233