Effects of the Crustal Fields on the Solar Wind-Martian Ionosphere Interaction: A Global Hybrid Model

Details Effects of the Crustal Fields on the Solar Wind-Martian Ionosphere Interaction: A Global Hybrid Model Effects of the Crustal Fields on the Solar Wind-Martian Ionosphere Interaction: A Global Hybrid Model

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsm51b..04t&link_type=abstract

American Geophysical Union, Spring Meeting 2004, abstract #SM51B-04

Physics

2459 Planetary Ionospheres (5435, 5729, 6026, 6027, 6028), 2753 Numerical Modeling, 2756 Planetary Magnetospheres (5443, 5737, 6030), 2780 Solar Wind Interactions With Unmagnetized Bodies

Scientific paper

Effects of the crustal magnetic fields on the Martian plasma environment are investigated using a comprehensive 2-D global hybrid (particle ions/fluid electrons) simulation model. The model includes the entire solar wind-planetary ionosphere interaction region self-consistently, i.e., the region above 100 km altitude with a finest resolution of 5 km in radial direction, with a kinetic ion treatment. We conduct simulations with a variety of crustal field strength; for example, a crustal field that is not able to withstand incoming solar wind by itself, and a strong one that is enough to balance the external pressure around the ionopause altitude. The result indicates that even a weak crustal field can affect the interaction significantly, because of the field compression occurring just above the ionopause. We will also discuss the modification of ion escape rate, mass and momentum transport efficiency across the ionopause, and relationship with the ejection of ionospheric plasma clouds.

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