MHD simulations of the transpolar potential response to solar wind density variations

Details MHD simulations of the transpolar potential response to solar wind density variations MHD simulations of the transpolar potential response to solar wind density variations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm53a..05o&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM53A-05

Physics

2736 Magnetosphere/Ionosphere Interactions (2431), 2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

Recent analyses of an isolated solar wind density pulse on 10 January 1997, while the interplanetary electric field remained steady, identified a dramatic increase in the transpolar potential (TP) from 130 to 220 kV. The TP models of neither Weimer nor Siscoe-Hill predict such an increase. However, magnetohydrodynamic (MHD) simulations of the event do predict a TP increase consistent with satellite measurements. The response is transient, decaying on time scales of tens of minutes toward a final equilibrium close to the original potential. The simulated TP enhancement derives from significant erosion of the dayside magnetopause and transport of newly opened magnetic flux across the polar cap. The exponential decay of the TP results from inductance in the magnetosphere-ionosphere circuit. MHD simulation results for different solar wind density increases/decreases will be presented and discussed. The time dependent TP for varying solar wind density conditions can be fairly well described using the dayside merging rate derived from the MHD simulations to power an LR circuit model of the magnetosphere-ionosphere system.

Affiliated with

Also associated with

No associations

Rating

MHD simulations of the transpolar potential response to solar wind density variations 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 MHD simulations of the transpolar potential response to solar wind density variations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MHD simulations of the transpolar potential response to solar wind density variations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1029251