Shallow Water Effects on Ship Underwater Noise Measurements

Tuomas Sipilä, Ville Viitanen, Seppo Uosukainen, Rhena Klose

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    The underwater noise of icebreaker Polaris was measured in shallow water. The measurements were conducted using one hydrophone at the sea bottom and three hydrophones at intermediate depths. The noise measurements were analysed in this paper at port side passes at 11 knots speed. Transmission loss was investigated in shallow water for ranges typical in noise trials between the target ship and the measurement location. The transmission loss at different depths and frequencies was analysed from the measurements. The measured transmission loss was compared to the results of acoustic propagation models. The sensitivity of transmission loss to bathymetry and seabed sediment characteristics was studied numerically by systematically varying bottom geometry and its acoustic properties. The noise measurements conducted with two different methods gave relatively close results although the measurements were done in water depths not reaching the minimum levels of classification notations. The numerical simulations revealed the complicated underwater acoustic environment present in shallow waters.
    Original languageEnglish
    Title of host publicationProceedings of Inter-Noise 2019
    EditorsAntonio Calvo-Manzano, Ana Delgado, Antonio Perez-Lopez, Jose Salvador Santiago
    Place of PublicationMadrid
    PublisherInstitute of Noise Control Engineering
    Number of pages12
    ISBN (Electronic)978-84-87985-31-7
    Publication statusPublished - 16 Jun 2019
    MoE publication typeA4 Article in a conference publication
    Event48th International Congress and Exhibition on Noise Control Engineering, Inter-Noise 2019 - Madrid, Spain
    Duration: 16 Jun 201919 Jun 2019
    Conference number: 49

    Publication series

    SeriesInter-noise: International Conference on Noise Control Engineering
    ISSN0105-175X

    Conference

    Conference48th International Congress and Exhibition on Noise Control Engineering, Inter-Noise 2019
    Abbreviated titleInter-noise 2019
    CountrySpain
    CityMadrid
    Period16/06/1919/06/19

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    Keywords

    • Underwater noise
    • ship
    • Shallow water

    Cite this

    Sipilä, T., Viitanen, V., Uosukainen, S., & Klose, R. (2019). Shallow Water Effects on Ship Underwater Noise Measurements. In A. Calvo-Manzano, A. Delgado, A. Perez-Lopez, & J. S. Santiago (Eds.), Proceedings of Inter-Noise 2019 [1707] Institute of Noise Control Engineering. Inter-noise: International Conference on Noise Control Engineering