DPS 35th Meeting, 1-6 September 2003
Session 19. Mars Surface II
Poster, Highlighted on, Wednesday, September 3, 2003, 3:00-5:30pm, Sierra Ballroom I-II

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[19.08] Particle Anisotropy Measurement and Reflectometry Prospects for Martian Field Studies on Mars Express

J.G. Luhmann, S.A. Ledvina (Space Sciences Lab, UC Berkeley), S.H. Brecht (Bay Area Research Corp.), S. Barabash (Swedish Institute of Space Physics, Kiruna), D. Winningham (Southwest Research Inst.)

The ASPERA-3 experiment on Mars Express (MEX) includes the capability of measuring 0.01 to 40 keV/q ions of solar wind and planetary origin (H+, H2+, He+, O+), and 0.01 to 20 keV electrons (Barabash et al., EGS presentation, 2000, on-line at http://www.aspera-3.org/). Although the MEX payload does not include a magnetometer, ASPERA-3's particle measurements can provide substantial information on Mars crustal magnetic field both locally, via anisotropy measurements, and below the spacecraft via reflectometry techniques similar to those used in the MGS MAG/ER experiment (Mitchell et al., JGR, 106, p.23,419, 2001). This poster explores these possibilities using test particles in the ASPERA-3 energy and species ranges launched into the Purucker et al. model of the crustal field (Purucker, M., et al., GRL, 27, 2449, 2000), assuming various behaviors for the prevailing external field in Mars' solar wind wake and the Martian nightside atmosphere.

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Bulletin of the American Astronomical Society, 35 #4
© 2003. The American Astronomical Soceity.