Initial results for the north pole of the Moon from Mini-SAR, Chandrayaan-1 mission

Details Initial results for the north pole of the Moon from Mini-SAR, Chandrayaan-1 mission Initial results for the north pole of the Moon from Mini-SAR, Chandrayaan-1 mission

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3706204s&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 6, CiteID L06204

Physics

13

Planetary Sciences: Solar System Objects: Moon (1221), Planetary Sciences: Solid Surface Planets: Polar Regions, Planetary Sciences: Solid Surface Planets: Ices, Planetary Sciences: Solid Surface Planets: Composition (1060, 3672), Planetary Sciences: Solid Surface Planets: Physical Properties Of Materials

Scientific paper

We present new polarimetric radar data for the surface of the north pole of the Moon acquired with the Mini-SAR experiment onboard India's Chandrayaan-1 spacecraft. Between mid-February and mid-April, 2009, Mini-SAR mapped more than 95% of the areas polewards of 80° latitude at a resolution of 150 meters. The north polar region displays backscatter properties typical for the Moon, with circular polarization ratio (CPR) values in the range of 0.1-0.3, increasing to over 1.0 for young primary impact craters. These higher CPR values likely reflect surface roughness associated with these fresh features. In contrast, some craters in this region show elevated CPR in their interiors, but not exterior to their rims. Almost all of these features are in permanent sun shadow and correlate with proposed locations of polar ice modeled on the basis of Lunar Prospector neutron data. These relations are consistent with deposits of water ice in these craters.

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