On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms

Details On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa11b..07a&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA11B-07

Physics

2411 Electric Fields (2712), 2435 Ionospheric Disturbances, 2437 Ionospheric Dynamics, 2443 Midlatitude Ionosphere

Scientific paper

The composition theory indicates a strong seasonal-latitudinal dependence in the ionospheric response to storms. This dependence is clearly visible as the boundary between the positive and negative phases of storms, which frequently is seen in the winter hemisphere. Enhancements of idealized global circulation cells, related to the energy input in the auroral regions during perturbed conditions, can be used to explain the distortion of the latitudinal profile of the mean molecular mass that produces this boundary. Changes in neutral composition explicate the negative phase in summer hemisphere, and the coexistence of positive and negative phases in winter hemisphere. This boundary can migrate across the mid-latitude regions introducing transient sharp gradients in NmF2 and possibly in TEC. Electrodynamic effects on the equatorward side act to further steep the ionospheric gradients. The dynamics of these features produce an increase in variability that can be hard to capture in models.

Affiliated with

Also associated with

No associations

Rating

On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms 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 On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Source of Steep Gradients at Midlatitud During Geomagnetic Storms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1456348