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GEOPHYSICAL RESEARCH LETTERS,
VOL. 33,
L17502,
4 PP., 2006
doi:10.1029/2006GL027235
Transoceanic wave propagation links iceberg calving margins of Antarctica with storms in tropics and Northern Hemisphere
Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
Department of Geological Sciences, Northwestern University, Evanston, Illinois, USA
Geophysical Research Center and Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Institute for Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA
Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
School of Oceanography, University of Washington, Seattle, Washington, USA
Institute for Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA
Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
School of Oceanography, University of Washington, Seattle, Washington, USA
Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
Hydrospheric and Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
Stormsurf, Half Moon Bay, California, USA
Antarctic Meteorological Research Centre, University of Wisconsin, Madison, Wisconsin, USA
We deployed seismometers on the Ross Ice Shelf and on various icebergs adrift in the Ross Sea (including B15A, a large 100 km by 30 km fragment of B15, which calved from the Ross Ice Shelf in March, 2000). The data reveal that the dominant energy of these floating ice masses is in the 0.01 to 0.1 Hz band, and is associated with sea swell generated in the tropical and extra-tropical Pacific Ocean. In one example, a strong storm in the Gulf of Alaska on 21 October 2005, approximately 13,500 km from the Ross Sea, generated swell that arrived at B15A immediately prior to, and during, its break-up off Cape Adare on 27 October 2005. If sea swell influences iceberg calving and break-up, a teleconnection exists between the Antarctic ice sheet mass balance and weather systems worldwide.
Received 14 June 2006; accepted 31 July 2006; published 12 September 2006.
Citation: (2006), Transoceanic wave propagation links iceberg calving margins of Antarctica with storms in tropics and Northern Hemisphere, Geophys. Res. Lett., 33, L17502, doi:10.1029/2006GL027235.
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