Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss

Details Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm41a1104k&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SM41A-1104

Physics

2724 Magnetopause, Cusp, And Boundary Layers, 2778 Ring Current, 2788 Storms And Substorms

Scientific paper

It has been known that (untrapped) ring current particles can be lost through the dayside MP(magnetopause) into the magnetosheath. However, details of the loss mechanism of this process have not received much attention. In this paper, we show that the solar wind dynamic pressure can play a significant role in the dayside loss. In order to show that, we have first analyzed the average characteristics of the 95 geomagnetic storm events selected from the period 1997 to 2002. We find that the dynamic pressure overall enhances during the magnetic storm. The enhancement is most significant during the storm main phase and it is higher for stronger storms. Using one of the most recent Tsyganenko models, T01_s, we show that this enhanced dynamic pressure not only pushes MP to move inward but also sets an enhanced gradient of the magnetic field intensity along the MP. On the basis of the test particle calculation, we explicitly show that the increased gradient of the magnetic field intensity along the MP can be a significant factor for the particles to effectively cross the MP by the gradient-drift. We argue that this can often apply to the majority of the ring current particles.

Affiliated with

Also associated with

No associations

Rating

Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss 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 Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Wind Dynamic Pressure during Magnetic Storms and Its Implications on the Dayside Ring Current Particle Loss will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1468823