Near infrared spectroscopic study on an evidence of water-ice presence at craters located near the Lunar South Pole

Many spacecrafts and ground observations have tried to discover direct or indirect evidences for the lunar water presence since Apollo era. The Lunar South Pole has known as a possible site of water-ice deposits on the Moon because temperature of the South Pole is low enough to trap volatiles due to a permanent shadowed area. In particular, The LCROSS (Lunar Crater Observation and Sensing Satellite) detected H2O and OH from ejecta plume of impact experiments on 9 October 2009 (Colaprete et al., 2010) that the impact sites were located at the crater Cabeus, near the South Pole. The Clementine also measured CPR (Circular Polarization Ratio) by bi-static radar experiments, which offered the possibility of the water presence in the Moon. However, Campbell et al. (2006) suggested that the measurement of CPR was not an evidence for water deposits at Shackleton crater, located near the South Pole. We try to discover a spectroscopic evidence for water presence at craters located near the South Pole in near infrared with the Moon Mineralogy Mapper (M3) onboard Chandrayaan-1.