Earth ID: 12633

Crack in Larsen C Ice Shelf

Released on July 12, 2017

Thermal wavelength image of a large iceberg, which has calved off the Larsen C ice shelf. Darker colors are colder, and brighter colors are warmer, so the rift between the iceberg and the ice shelf appears as a thin line of slightly warmer area. Image from July 12, 2017, from the MODIS instrument on NASA's Aqua satellite.

Credit: NASA Worldview

An iceberg about the size of the state of Delaware split off from Antarctica’s Larsen C ice shelf sometime between July 10 and July 12. The calving of the massive new iceberg was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite.

Larsen C, a floating platform of glacial ice on the east side of the Antarctic Peninsula, is the fourth largest ice shelf ringing Earth’s southernmost continent. In 2014, a crack that had been slowly growing into the ice shelf for decades suddenly started to spread northwards, creating the nascent iceberg. The growth of the crack has been tracked by Landsat satellites, which are jointly managed by NASA and the U.S. Geological Survey.

Now that the close to 2240 square-mile (5800 square kilometers) chunk of ice has broken away, the Larsen C shelf area has shrunk by approximately 10 percent.

Animated GIF of the growth of the crack in the Larsen C ice shelf, from 2006 to 2017, as recorded by NASA/USGS Landsat satellites.

Version of animation without pink trace

Credit: NASA/USGS Landsat

Satellite image of a long crack in the Larsen C ice shelf, taken on March 8, 2017, by the Operational Land Imager on the NASA/USGS Landsat 8 spacecraft.

Credit: NASA/USGS Landsat

Wide view of Larsen C ice shelf and its recently calved iceberg. Darker colors are colder, and brighter colors are warmer, so the rift between the iceberg and the ice shelf appears as a thin line of slightly warmer area. Image from July 12, 2017, from the MODIS instrument on NASA's Aqua satellite.

Credit: NASA Worldview

This is Forward Camera and Nadir (downward-looking) Camera footage of a section of a large crack on the Larsen C ice shelf. It was taken on board NASA's DC-8 research aircraft on Nov. 10, 2016 as part of an Operation IceBridge research flight.

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Credits

Matthew R. Radcliff (USRA): Producer
Matthew R. Radcliff (USRA): Editor
Maria-Jose Vinas Garcia (Telophase): Writer
Christopher Shuman (UMBC JCET): Scientist
Kelly Brunt (Earth System Science Interdisciplinary Center/University of Maryland): Scientist

Please give credit for this item to:
NASA's Goddard Space Flight Center

Short URL to share this page:
https://svs.gsfc.nasa.gov/12633

Missions:
Aqua
Landsat

This item is part of these series:
Geophysical Changes Over Time
Larsen Ice Shelf
Landsat

Keywords:
SVS >> HDTV
SVS >> Ice Shelf
SVS >> Iceberg
SVS >> Larsen
GCMD >> Earth Science >> Hydrosphere >> Glaciers/Ice Sheets >> Icebergs
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0