ˈhummockingn. the forming of hummocks on an ice field.
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the world > the earth > water > ice > body of ice > [noun] > ice-field or pack-ice > forming hummocks
hummocking1853
1853 E. K. KaneU.S. Grinnell Exped. xvi. 122 The elastic material corrugated before the enormous pressure; then cracked, then crumbled, and at last rose... This imposing process of dynamics is called ‘Hummocking’.