sheet edge

The term "sheet edge" refers to the empty fields connected to the stamps and arranged around the sheet.

Sheet edges can produce any one imperforate side or two adjacent imperforate sides when the stamp comes from the corner of the sheet.

Isunngua (old spelling: Isúngua) is a highland in the Qeqqata municipality in central-western Greenland, located immediately west of the Greenland Ice Sheet edge.

Historically, he said, about three inches of ocean surface water is transferred to the ice sheets as snowfall every 10 years, and the same amount comes out as icebergs and melting along the sheet edges.