Seasonal Ice Flow Backed Up

C-19 iceberg that calved off the Ross Ice shelf and its companion B-15 iceberg, which is anchored near the coast. The two large bergs may have disrupted normal ocean circulation that clears the Ross Sea of seasonal ice during the first months of austral summer. The ice remained in the sea long past previous thaw dates, and created trouble for ships trying to bring in supplies to McMurdo research station on Ross Island. But after months of stillness, in mid-January C-19 changed position dramatically over just a few days, pivoting northward from its eastern end. The effect was like opening a floodgate, and the sea ice trapped between C-19 and B-15 poured out into the Southern Ocean.

Visualization Credits

Stuart A. Snodgrass (GST): Lead Animator
Vincent Salomonson (NASA/GSFC): Scientist
Rebecca E. Lindsey: Writer
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio, and the MODIS Rapid Response Team (

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Data Used:
Terra/MODIS 9/22/02; 10/07,08,09,11,22,23/02; 11/07,09,29/02; 12/01,31/02; 1/2,14,16,17,26,27,28,29/03; 2/2,3/03

Goddard TV Tape:
G2007-001HD -- NASA's HD Climate Change Resource Tape

SVS >> Antarctic Ice Sheet
SVS >> C-19
DLESE >> Cryology
SVS >> Iceberg
SVS >> Land Ice
SVS >> Ross Ice Shelf
SVS >> Sea Ice
GCMD >> Location >> Antarctica
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