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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50431


    Title: Bow and stern waves triggered by the Moon's shadow boat
    Authors: Liu,JY;Sun,YY;Kakinami,Y;Chen,CH;Lin,CH;Tsai,HF
    Contributors: 太空科學研究所
    Keywords: ATMOSPHERIC GRAVITY-WAVES;23 OCTOBER 1976;SOLAR ECLIPSE;JUNE 30
    Date: 2011
    Issue Date: 2012-03-27 17:31:43 (UTC+8)
    Publisher: 國立中央大學
    Abstract: It has been predicted that the Moon's shadow, the cooling region, sweeping over the Earth's atmosphere with a supersonic speed could trigger bow waves since 1970. The longest total solar eclipse within next hundred years occurring on 22 July 2009 sweeps over the Eastern Asia region during the noontime period. An analysis of the Hilbert-Huang transform (HHT) is applied to study ionospheric TEC (total electron content) derived from ground-based GPS receivers in Taiwan and Japan. We not only find the feature of the predicted bow wave but also the stern wave on the equator side of the eclipse path, as well as the stern wake right behind the Moon's shadow boat. The bow and stern waves are formed by acoustic gravity waves of periods about 3 and/or 5 minutes traveling equatorward with a phase speed of about 100 m/s in the ionosphere. Citation: Liu, J. Y., Y. Y. Sun, Y. Kakinami, C. H. Chen, C. H. Lin, and H. F. Tsai (2011), Bow and stern waves triggered by the Moon's shadow boat, Geophys. Res. Lett., 38, L17109, doi: 10.1029/2011GL048805.
    Relation: GEOPHYSICAL RESEARCH LETTERS
    Appears in Collections:[太空科學研究所 ] 期刊論文

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