Dust Coatings at the Mars Pathfinder Landing Site

Details Dust Coatings at the Mars Pathfinder Landing Site Dust Coatings at the Mars Pathfinder Landing Site

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..278...39j&link_type=abstract

Solar System Remote Sensing, p. 39

Physics

Mars Pathfinder, Landing Sites, Dust, Photometry, Deposition, Mars Atmosphere, Mars Surface, Calibrating, Radiometers, Imaging Techniques, Atmospheric Models, Radiative Transfer, Optical Thickness, Cameras

Scientific paper

Multispectral imaging of the Mars Pathfinder (MPF) radiometric calibration targets (RCTs) by the Imager for Mars Pathfinder (IMP) camera provided sufficient data to model the photometric changes associated with variable deposition of atmospheric dust on the RCTs. Sky models were used to correct for variations in diffuse/direct illumination conditions during the mission, and two-layer Hapke radiative transfer models were developed to constrain variations in spectral properties associated with dust deposition on the RCTs. The results are consistent with dust deposition during the MPF mission amounting to dust optical depth (tau) values less than 0.5 (i.e., less than 10 microns effective thickness of 10-20 micron particles for porosity 0.80), although variability in the dust thickness with time may result from erosive/depositional phases of aeolian activity.

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