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Erebus Glacier Tongue calved

Friday 26 April 2013 4:02pm

Researchers from the School of Surveying, NIWA, and Callaghan Innovation were involved in mapping and documenting the recent major calving of Erebus Glacier Tongue.

On the 27 February 2013 (UTC), and for only the 4th time in the brief recorded history of Antarctica, the Erebus Glacier Tongue calved. In doing so it freed a c.a. 3.3 km penguin-like shaped iceberg. The reduced length of the Erebus Glacier Tongue is now about 9.9 km.

Remote sensing imagery from MODIS, ASTER, and Landsat sensors were used to document the event and the trajectory of the berg in McMurdo sound over two weeks.

A full account of this event is available from: Stevens, C. L., Sirguey, P., Leonard, G. H., and Haskell, T. G.: Brief communication "The 2013 Erebus Glacier tongue calving event" The Cryosphere Discuss., 7, 1749-1760, doi:10.5194/tcd-7-1749-2013, 2013.

Below is a trajectory of the of the berg over two weeks following the event.

EGT_20132702_v2-1_web

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Below is an ASTER image captured shortly after the calving on 27 February 2013. Note the position and calving of the 1990 event as estimated from analysis of Landsat images.

EGT_20130227_ASTER_v1_web

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Below is a sequence of MODIS images showing the trajectory of the berg over two weeks following the events.

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