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Images of Melt: Earth's Vanishing Ice

Midnight Iceberg

Greenland iceberg in Disko Bay

(Image credit: Ian Joughin)

The midnight sun glows off an iceberg in Disko Bay, Greenland. Icebergs calving into the sea are a major source of Greenland's ice loss.

Meltwater Stream

Meltwater in Greenland ice

(Image credit: Ian Joughin)

A stream of meltwater flows across the ice surface in Greenland.

Ice Canyon

Meltwater canyon in ice sheet

(Image credit: Ian Joughin)

Meltwater creates a 60-foot deep (18.2 meter) canyon in the polar ice sheet.

Meltwater Conduit

Meltwater canyon in ice sheet

(Image credit: Ian Joughin)

This canyon drained a large meltwater lake on the surface of the ice into a moulin, or under-ice channel that flows to the bottom of the ice sheet.

Glacial Lake

Supraglacial lake on ice sheet.

(Image credit: Ian Joughin)

Supraglacial lakes like this one (which is about 0.75 miles in diameter) dot the surface of the Greenland ice sheet during the summer seasonal melt.

Moulin

Glacial moulin in Greenland.

(Image credit: Ian Joughin)

A moulin dips into the ice sheet, channeling water to the base of the ice, where a network of underground springs route it to the sea.

Pine Island Glacier

Pine Island Glacier crevasses.

(Image credit: Ian Joughin)

Crevasses mar stretching ice on the Pine Island Glacier in Antarctica.

Pine Island Glacier Flow

Pine Island Glacier crevasses.

(Image credit: Ian Joughin)

Crevasses reveal the slow movement of the Pine Island Glacier in Antarctica.

Criss-Crossing Crevasses

Pine Island Glacier crevasses.

(Image credit: Ian Joughin)

Criss-Crossing Crevasses near the grounding line of the Pine Island Glacier, where the glacier meets Antarctica's sea ice.

Aerial Glacier View

Pine Island Glacier crevasses.

(Image credit: Ian Joughin)

An aerial view of the Pine Island Glacier in Antarctica, looking seaward.

Staccato Peaks

Staccato Peaks on Antarctic Peninsula

(Image credit: Ian Joughin)

The Staccato Peaks of Alexander Island on the Antarctic Peninsula. Complex weather and snowfall in this region makes assessing ice loss and gain difficult.