Global MHD Modeling of the Impact of a Solar Wind Pressure Pulse

Details Global MHD Modeling of the Impact of a Solar Wind Pressure Pulse Global MHD Modeling of the Impact of a Solar Wind Pressure Pulse

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm51b08k&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM51B-08

Physics

2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

A sudden increase in the solar wind dynamic pressure compresses the magnetosphere and launches compressional waves into the magnetosphere. Sudden changes in the solar wind dynamic pressure also trigger longer period ground pulsations. Using BATS-R-US, a global 3D adaptive MHD model developed at the University of Michigan, we will simulate a sudden change in the solar wind dynamic pressure by using a density pulse. The global response of the magnetosphere, including the ionosphere and the location of field-aligned current generation, will be studied. We will compare the response of the magnetosphere to a density pulse to the response of the magnetosphere to a step increase in the density. We will also compare the results of the simulation to the current theories of field-aligned current generation from a pressure pulse.

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