Improved electrodynamic modeling of an omega band and analysis of its current system

Details Improved electrodynamic modeling of an omega band and analysis of its current system Improved electrodynamic modeling of an omega band and analysis of its current system

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...101.2677a&link_type=abstract

Journal of Geophysical Research, Volume 101, Issue A2, p. 2677-2684

Physics

14

Ionosphere: Auroral Ionosphere, Ionosphere: Electric Fields, Magnetospheric Physics: Current Systems, Ionosphere: Current Systems

Scientific paper

We improve a previous electrodynamic model of an omega band by applying a nonuniform spatial distribution of the Hall to Pedersen conductance ratio instead of using a constant value. The analysis of the current system due to our model reveals that after separating the background westward electrojet off, the omega band currents mainly consist of Hall currents circulating around concentrated upward field-aligned currents in the auroral tongue. However, the upward field-aligned currents exhibit a nearly circular configuration around the center of the tongue and almost vanish directly in the center. Equally strong downward field-aligned currents are missing. Additionally, at the western flank of the tongue we notice an about northwest-southeast aligned Cowling channel. Its currents are mainly responsible for the spike-like D peak in magnetograms and for the general asymmetry in D and Z longitudinal profiles on the ground. An additional enhancement of the Hall conductance in this channel further improves the agreement between calculated and measured ground magnetic disturbance profiles.

Affiliated with

Also associated with

No associations

Rating

Improved electrodynamic modeling of an omega band and analysis of its current system 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 Improved electrodynamic modeling of an omega band and analysis of its current system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved electrodynamic modeling of an omega band and analysis of its current system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-854627