has part has quality has input has output ice mass melting sublimation process ice loss process ice loss A material decumulation process during which the mass of an existing ice mass decreases in size. http://orcid.org/0000-0002-3410-4655 Ice loss could likely become a defined class with some equivalence axioms linking it to processes, along the lines of: 'has part' some (icemelt or 'ice calving process' or 'water ice sublimation process'). envoPolar ice calving process material transport process material decumulation process material transformation process decreased mass