From our recent research on ice I_h(hexagonal ice),we deduce that free OH groups exist at the ice surface and that dangling OH influences the interior of the proton-disordered ice.Additionally,exploiting recent research by others on water molecular clusters,we propose a new interpretation for the Raman OH stretching vibration of ice I_h.We deconvolute the Raman OH stretching vibration of ice I_h into four sub-bands,with each sub-band being ascribed to OH vibrations engaged in different types of hydrogen bonding. From our recent research on ice I_h (hexagonal ice), we deduce that free OH groups exist at the ice surface and that dangling OH influences the interior of the proton-disordered ice. Additionally, exploit recent research by others on water molecular clusters, we propose a new interpretation for the Raman OH stretching vibration of ice I_h.We deconvolute the Raman OH stretching vibration of ice I_h into four sub-bands, with each sub-band being ascribed to OH vibrations engaged in different types of hydrogen bonding.