Factors controlling the location of the Bow Shock at Mars

Details Factors controlling the location of the Bow Shock at Mars Factors controlling the location of the Bow Shock at Mars

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusm.p41a..09v&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #P41A-09

Physics

5440 Magnetic Fields And Magnetism, 6225 Mars, 2152 Pickup Ions, 2154 Planetary Bow Shocks, 2162 Solar Cycle Variations (7536)

Scientific paper

During the first year of the Mars Global Surveyor (MGS) mission, 553 shock crossings have been identified from a total of 363 orbits. The shape of the shock has been determined by examining the MGS spacecraft Magnetometer/Electron Reflectometer (MAG/ER) data. The location of the shock was found highly variable. We found that the high crustal magnetic sources, found in the southern hemisphere, do not seem responsible for the Bow Shock variability. Contrary to many expectations there is no obvious strong one to one correlation between the location of the highest crustal sources and the variability of the shock position. However, the shock appears farthest from Mars in the hemisphere of locally upward interplanetary electric field consistent with the idea that mass loading play a role in controlling the Bow Shock location, which confirms previous results.

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