Magnetic Lithosphere of Mars from MGS-MAG data

Details Magnetic Lithosphere of Mars from MGS-MAG data Magnetic Lithosphere of Mars from MGS-MAG data

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1160m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1160

Computer Science

Scientific paper

Magnetic field vector data has been collected by Mars Global Surveyor using a Flux-Magnetometer as well as Electron Reflectometry during its aerobraking, science and mapping phases for a total duration of nine years. Although low altitude data is generally more suitable to resolve local magnetic anomalies, we use the mapping phase orbit data as it provides a stable 400 km altitude, sun-synchronous orbit covering the entire Martian surface. This data set has been investigated using spherical harmonic analysis and equivalent dipole models [1]. One of the critical steps in these analyzes is the careful selection of data points in order to reduce noise as well as the use of a proper regularization technique for data inversion. Therefore, we investigate the effectiveness of different data processing and selection approaches and compare the modeled magnetic field to the data. Furthermore, the application of new field representations and regularization techniques and their application to Mars will be discussed.

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