Grażyna Grelowska - Science profile - MOST Wiedzy

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  • UNDERWATER NOISE GENERATED BY A SMALL SHIP IN THE SHALLOW SEA

    - Archives of Acoustics - Year 2013

    Study of the sea noise has been a subject of interest for years. The first work of this scope were published at the turn of the twentieth century by Knudsen (KNUDSEN et al., 1948) and G. Wenz (WENZ, 1962). Disturbances called "shipping noise" are one of the important components of the sea noise. In this work the results of an experimental research of underwater noise produced by a small ship of a classic propulsion are...

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  • Detection of Objects Buried in the Sea Bottom with the Use of Parametric Echosounder

    - Archives of Acoustics - Year 2013

    The paper contains results of a in situ research main task of which was to detect objects buried, partially or completely, in the sea bottom. Object detecting technologies employing acoustic wave sources based on nonlinear interaction of elastic waves require application of parametric sound sources. Detection of objects buried in the sea bottom with the use of classic hydroacoustic devices such as the sidescan sonar or multibeam...

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  • Shipping Low Frequency Noise and Its Propagation in Shallow Water

    One of the most significant factor influencing acoustical climate of the sea is underwater noise generated by moving ships. If the considered sea area has features of the shallow water, namely the wave frequency fulfils relation f < 10c/h, where c denotes phase speed of sound, and h is depths of the sea, then in certain distance from the wave source specific image of sound pressure distribution in the mean of wave modes appears....

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Obtained scientific degrees/titles

  • 2002-06-28

    Obtained science degree

    dr hab. Oceanography (Earth sciences)
    Instytut Oceanologii PAN
  • 1990-07-11

    Obtained science degree

    dr Others - Engineering, Technology (Technology)
    Wojskowa Akademia Techniczna

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