Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities

Details Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa41b1867t&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SA41B-1867

Physics

[2435] Ionosphere / Ionospheric Disturbances, [2443] Ionosphere / Midlatitude Ionosphere, [2455] Ionosphere / Particle Precipitation, [2467] Ionosphere / Plasma Temperature And Density

Scientific paper

A statistical study is performed on the vertical electron density profiles observed by the GPS Occultation Experiment aboard satellites of the FORMOSAT-3/COSMIC mission. The study examines the influence of geomagnetic disturbances on the mid-latitude density in the dawn/pre-dawn sector of the ionosphere under different ranges of solar zenith angles, covering locations before and after daybreak. The statistical observations are governed by multiple effects, corresponding to different mechanisms induced by the occurrence of auroras. One effect is a reduction of the density in the F2 region, whose importance becomes secondary when the auroras are associated with strong geomagnetic disturbances. The primary effect features an increase in the density at locations before daybreak, but an opposite change when the local ionosphere is already sunlit. This observed effect of aurora-induced reversal of daybreak density perturbation (ARDDP) can be explained by the dynamo mechanism associated with equatorward neutral wind at subauroral latitudes during auroral particle precipitation.

Affiliated with

Also associated with

No associations

Rating

Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities 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 Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reversal of Ionospheric Density Perturbations at Daybreak due to Geomagnetic Activities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-874935