Estimate method for frontal position of Kuroshio extension using ocean acoustic tomography data
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概要
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In the present study, a simple and efficient method for estimating frontal positions of the Kuroshio extension (KE) is proposed using relationship between meridional shifts of the KB and acoustic travel time propagating through the SOFAR channel. Effectiveness of the proposed method is estimated by sound propagation simulation using the temperature and salinity fields from observations in the KE, and demonstrates propriety of this method. Applying this method to in situ ocean acoustic tomography data in the KE region in summer 1997 provides the proper estimates of the KB positions. This simple method may be utilized in determining "initial guess of the KE position" and "reference sound speed field" that are necessary for ocean acoustic tomographic inversion which is much more complicated and time-consuming data analysis.
- 社団法人日本音響学会の論文
著者
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Yoshikawa Yasushi
Research Department Japan Marine Science And Technology Center
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Nakano I
Japan Marine Sci. And Technol. Center Yokosuka Jpn
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Shinke Tomio
Oki Electric Industry Co., Ltd.
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Kamoshida Takashi
Oki Electric Industry Co., Ltd.
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Nakano Iwao
Research Department, Japan Marine Science and Technology Center
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Shinke Tomio
Oki Electric Industry Co. Ltd.
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Kamoshida Takashi
Oki Electric Industry Co. Ltd.
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