Physics
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000p%26ss...48.1491g&link_type=abstract
Planetary and Space Science, Volume 48, Issue 15, p. 1491-1504.
Physics
8
Scientific paper
The paper presents the results of a new analysis of the data from the Magnetic Properties Experiment onboard the Mars Pathfinder Spacecraft. The spectral data from the extended visible region of material adhering to the magnets are presented as well as the time dependence of dust accumulation to the magnets. A new model is developed to estimate the magnetic properties of the accumulated dust. It is found that the optical reflection spectra of the magnetic dust differ slightly from the reflection of ground soil//dust in the vicinity of the lander. Several possible hypotheses are given to account for this difference. Magnetic dust has been removed from the magnets at least twice during the 80 sol mission by wind gusts, and it is suggested that this happens in a manner similar to sand blasting. A lower limit for the saturation magnetisation of the most magnetic particles is found to be ~5Am2/kg.
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