Effect of Surface Duct on Pulses Propagating in a Sound Channel in the Ocean.

DOI Web Site Web Site Web Site 参考文献10件
  • Futa Kohji
    Simulation Systems Division, Mitsubishi Precision Co., Ltd. (MPC), 345 Kami-Machiya, Kamakura-shi, Kanagawa 247-8505, Japan
  • Ando Keizo
    Simulation Systems Division, Mitsubishi Precision Co., Ltd. (MPC), 345 Kami-Machiya, Kamakura-shi, Kanagawa 247-8505, Japan
  • Kikuchi Toshiaki
    Department of Applied Physics, National Defense Academy (NDA), 1-10-20 Hashirimizu, Yokosuka-shi, Kanagawa 239-8686, Japan
  • Tsuchiya Toshio
    Japan Marine Science and Technology Center (JAMSTEC), 2-15 Natsushima-cho, Yokosuka-shi, Kanagawa 237-0061, Japan

この論文をさがす

説明

In ocean acoustic tomography, unexpected changes in the travel time of acoustic pulses can sometimes be observed. It is considered that the possible causes are internal waves, layered sound speed microstructures and surface ducts. In this paper, we analyze the effect of a surface duct on a pulse that is propagating in a sound channel in the ocean by using the parabolic equation (PE) method. The received pulses change sensitively when a surface duct exists above the sound source or the receiver that is located around the axis of the sound channel. It has little effect on the pulses when it is located in the area between the source and the receiver. Consequently, one should pay attention to the sound speed profile near the surface above the source and the receiver in ocean acoustic tomography.

収録刊行物

参考文献 (10)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ