The Search for Correlation Between Water Ice Distribution and Surface Albedo from HEND and MOLA Data.

Details The Search for Correlation Between Water Ice Distribution and Surface Albedo from HEND and MOLA Data. The Search for Correlation Between Water Ice Distribution and Surface Albedo from HEND and MOLA Data.

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.p23c0078d&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #P23C-0078

Physics

0702 Permafrost (0475), 5462 Polar Regions, 6225 Mars

Scientific paper

The Mars Odyssey observations revealed huge water-ice regions poleward 60N and 60S latitudes and significant excess of subsurface water in some equatorial regions of Mars. In this study we tried to find correlation between distribution of Martian neutron flux (as a water/water ice signature) and surface albedo in order to study regional variations of water content in Martian subsurface. We have used observational data gathered by High Energy Neutron Detector (HEND) onboard Mars Odyssey and Mars Orbital Laser Altimeter (MOLA) onboard Mars Global Surveyor and searched for pair correlation coefficients between neutron flux (HEND) and surface albedo (MOLA radiometry) in different latitude belts covering both northern and southern hemispheres of Mars. In both hemispheres we have found that correlation between neutron flux (in different energy bands) and albedo increases as we move from the equator to the boundary of polar water-ice reach deposits. The maximal value of correlation coefficient has been found as much as 0.75. In our study we used thermal modeling of near- surface temperatures to validate observed correlations.

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