Ice calving

A mass of ice calves from the Perito Moreno glacier in Lago Argentino
A calving glacier and the resulting ice field.
Landsat image of Jakobshavn Isbræ. The lines show the position of the calving front of the Jakobshavn Isbræ since 1851. The date of this image is 2001 and the calving front of the glacier can be seen at the 2001 line. The area stretching from the calving front to the sea (towards the bottom left corner) is the Ilulissat icefjord. Courtesy of NASA Space Observatory
Glacier Bay, glacier calving

Breaking of ice chunks from the edge of a glacier.

- Ice calving
A mass of ice calves from the Perito Moreno glacier in Lago Argentino

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Ablation zone

Ablation zone or ablation area refers to the low-altitude area of a glacier or ice sheet below firn with a net loss in ice mass due to melting, sublimation, evaporation, ice calving, aeolian processes like blowing snow, avalanche, and any other ablation.

An iceberg in the Arctic Ocean

Iceberg

Piece of freshwater ice more than 15 m long that has broken off a glacier or an ice shelf and is floating freely in open water.

Piece of freshwater ice more than 15 m long that has broken off a glacier or an ice shelf and is floating freely in open water.

An iceberg in the Arctic Ocean
Northern edge of Iceberg B-15A in the Ross Sea, Antarctica, 29 January 2001
Grotto in an iceberg, photographed during the British Antarctic Expedition of 1911–1913, 5 Jan 1911
Different shapes of icebergs
Tabular iceberg, near Brown Bluff in the Antarctic Sound off Tabarin Peninsula
Non-tabular iceberg off Elephant Island in the Southern Ocean
One of the icebergs suspected of sinking the RMS Titanic; a smudge of red paint much like the Titanic red hull stripe was seen near its base at the waterline.
An iceberg being pushed by three U.S. Navy ships in McMurdo Sound, Antarctica
Iceberg A22A in the South Atlantic Ocean
Icebergs in Disko Bay
The calving of Iceberg A-38 off Filchner-Ronne Ice Shelf
Iceberg pictured in the coat of arms of Ilulissat

Icebergs that calve from glaciers in Greenland, are often irregularly shaped while Antarctic ice shelves often produce large tabular (table top) icebergs.

Ice shelf extending approximately 6 miles into the Antarctic Sound from Joinville Island

Ice shelf

Large floating platform of ice that forms where a glacier or ice sheet flows down to a coastline and onto the ocean surface.

Large floating platform of ice that forms where a glacier or ice sheet flows down to a coastline and onto the ocean surface.

Ice shelf extending approximately 6 miles into the Antarctic Sound from Joinville Island
Close-up of Ross Ice Shelf
Panorama of Ross Ice Shelf
An image of Antarctica differentiating its landmass (dark grey) from its ice shelves (minimum extent, light grey, and maximum extent, white)
grounding zone
Glacier-ice shelf interactions

Formerly, the primary mechanism of mass loss from ice shelves was thought to have been iceberg calving, in which a chunk of ice breaks off from the seaward front of the shelf.

Ice

Water frozen into a solid state, typically forming at or below temperatures of 0 degrees Celsius or 32 degrees Fahrenheit.

Water frozen into a solid state, typically forming at or below temperatures of 0 degrees Celsius or 32 degrees Fahrenheit.

The three-dimensional crystal structure of H2O ice Ih (c) is composed of bases of H2O ice molecules (b) located on lattice points within the two-dimensional hexagonal space lattice (a).
Pressure dependence of ice melting
Log-lin pressure-temperature phase diagram of water. The Roman numerals correspond to some ice phases listed below.
An alternative formulation of the phase diagram for certain ices and other phases of water
Frozen waterfall in southeast New York
Feather ice on the plateau near Alta, Norway. The crystals form at temperatures below −30 °C (−22 °F).
Ice on deciduous tree after freezing rain
A small frozen rivulet
Ice formation on exterior of vehicle windshield
An accumulation of ice pellets
A large hailstone, about 6 cm in diameter
Snowflakes by Wilson Bentley, 1902.
Harvesting ice on Lake St. Clair in Michigan, c. 1905
Layout of a late 19th-Century ice factory
Loss of control on ice by an articulated bus
Channel through ice for ship traffic on Lake Huron with ice breakers in background
Rime ice on the leading edge of an aircraft wing, partially released by the black pneumatic boot.
Skating fun by 17th century Dutch painter Hendrick Avercamp
Ice pier during 1983 cargo operations. McMurdo Station, Antarctica

Ice which calves (breaks off) from an ice shelf or glacier may become an iceberg.

Theatrical release poster

Chasing Ice

2012 documentary film about the efforts of nature photographer James Balog and his Extreme Ice Survey to publicize the effects of climate change.

2012 documentary film about the efforts of nature photographer James Balog and his Extreme Ice Survey to publicize the effects of climate change.

Theatrical release poster

The documentary includes scenes from a glacier calving event that took place at Jakobshavn Glacier in Greenland, lasting 75 minutes, the longest such event ever captured on film.

Average surface air temperatures from 2011 to 2021 compared to the 1956–1976 average

James Balog

American photographer whose work explores the relationship between humans and nature.

American photographer whose work explores the relationship between humans and nature.

Average surface air temperatures from 2011 to 2021 compared to the 1956–1976 average

The documentary includes scenes from a glacier calving event that took place at Jakobshavn Glacier in Greenland, lasting 75 minutes, the longest such event ever captured on film.

Ocean liner and Taku Glacier in art for Canadian Pacific

Taku Glacier

Tidewater glacier located in Taku Inlet in the U.S. state of Alaska, just southeast of the city of Juneau.

Tidewater glacier located in Taku Inlet in the U.S. state of Alaska, just southeast of the city of Juneau.

Ocean liner and Taku Glacier in art for Canadian Pacific
View across the Taku Glacier to Taku Towers.
An aerial view of a small corner of Taku Glacier, 2007.
Taku Glacier at the glacial snout

Until 1948 the glacier had a calving front; since then the terminus has been grounded.

The calving of A-38 off Ronne ice shelf.

Filchner–Ronne Ice Shelf

Antarctic ice shelf bordering the Weddell Sea.

Antarctic ice shelf bordering the Weddell Sea.

The calving of A-38 off Ronne ice shelf.
The A38-B iceberg splits.
Location.
Rapid sea ice breakup along the Ronne-Filchner ice shelf, January 2010
Some named Antarctic iceshelves.

This is known as calving.

The glacier of the Geikie Plateau in Greenland.

LeConte Glacier

21 mi and 1 mi glacier in the U.S. state of Alaska.

21 mi and 1 mi glacier in the U.S. state of Alaska.

The glacier of the Geikie Plateau in Greenland.

The glacier is a popular tourist destination, with operators from nearby Petersburg and Wrangell running excursions to its calving face.

Map of Glacier Bay National Park and Preserve

Margerie Glacier

21 mi long tidewater glacier in Glacier Bay, Alaska, United States within the boundaries of Glacier Bay National Park and Preserve.

21 mi long tidewater glacier in Glacier Bay, Alaska, United States within the boundaries of Glacier Bay National Park and Preserve.

Map of Glacier Bay National Park and Preserve
Ice chunk calving ([[:File:MargerieGlacier.gif|calving animation]])
Margerie Glacier aerial view

The steep drop off of Margerie Glacier terminus allows cruise ships and smaller park tour boats to anchor nearby providing close-up views of ice calving.