Transoceanic wave propagation links iceberg calving margins of Antarctica with storms in tropics and Northern Hemisphere

被引:91
作者
MacAyeal, Douglas R.
Okal, Emile A.
Aster, Richard C.
Bassis, Jeremy N.
Brunt, Kelly M.
Cathles, L. Mac.
Drucker, Robert
Fricker, Helen A.
Kim, Young-Jin
Martin, Seelye
Okal, Marianne H.
Sergienko, Olga V.
Sponsler, Mark P.
Thom, Jonathan E.
机构
[1] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA
[2] Northwestern Univ, Dept Geol Sci, Evanston, IL 60208 USA
[3] New Mexico Inst Min & Technol, Geophys Res Ctr, Socorro, NM 87801 USA
[4] New Mexico Inst Min & Technol, Dept Earth & Environm Sci, Socorro, NM 87801 USA
[5] Univ Calif San Diego, Scripps Inst Oceanog, Inst Geophys & Planetary Phys, La Jolla, CA 92093 USA
[6] Univ Washington, Sch Oceanog, Seattle, WA 98195 USA
[7] Stormsurf, Half Moon Bay, CA 94019 USA
[8] Univ Wisconsin, Antarctic Meteorol Res Ctr, Madison, WI 54025 USA
[9] NASA, Goddard Space Flight Ctr, Hydrospher & Biospher Sci Lab, Greenbelt, MD 20771 USA
关键词
D O I
10.1029/2006GL027235
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
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.
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页数:4
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