Physics
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3411201h&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 11, CiteID L11201
Physics
3
Planetary Sciences: Solid Surface Planets: Composition (1060, 3672), Planetary Sciences: Solid Surface Planets: Rings And Dust, Planetary Sciences: Solid Surface Planets: Surface Materials And Properties, Planetary Sciences: Solid Surface Planets: Instruments And Techniques, Planetary Sciences: Solar System Objects: Mars
Scientific paper
The temperature of the Martian surface has been measured by a number of spacecraft and numerical models of the surface thermal response constrain the near-surface physical properties. The results allow inferences regarding the surface layer and help determine potential hazards for landed spacecraft. However, thermal models generally do not incorporate the degree of surface complexity that is seen from landers. Here we examine potential contributions to the thermal response along the Opportunity Rover's traverse by using ground truth in conjunction with orbiter data from the THEMIS instrument on Mars Odyssey. We show that the size distribution of the ubiquitous hematite spherules varies in a way that is consistent with expectations from orbiter data. Secondly, exposures of bedrock along Opportunity's traverse have no observable effect on the bulk thermal response seen from orbit. These field observations are an important step toward improving understanding of the physical composition of the Martian surface.
Hynek Brian Michael
Singer Kelsi
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