Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm51a..01f&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SM51A-01
Physics
2704 Auroral Phenomena (2407), 2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2753 Numerical Modeling, 2776 Polar Cap Phenomena
Scientific paper
Global magnetohydrodynamic simulations of the magnetosphere for a period of more than 36 hours of strongly northward interplanetary magnetic field (IMF) during January 1998 have been completed. The results show extended periods when the open polar cap magnetic field region was very small. The results also show many occasions when closed geomagnetic field lines extend to the geomagnetic pole. The results are compared to Eureka dawn-dusk meridian scanning photometer data and show reasonable agreement between the high latitude closed field regions and the observed 630 nm emissions. In one instance, the closed field region corresponds nicely with a theta aurora observed by the POLAR imager. We present these results along with magnetic conjugate mappings to the magnetosphere and to the southern polar ionosphere. We will discuss the implications of these results for the magnetospheric configuration and dynamics for strongly northward IMF. JAF supported by NSF Grant ATM-0001638.
Fedder Joel A.
Lyon John G.
McEwen Don J.
Slinker Steven P.
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