Temat: anthropogenic underwater noise - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Selected characteristics of shipping noise at the fairway of the Gdynia Harbour
Autorzy:: Klusek, Z.
Szczucka, J.
Mróz, D.
Powiązania:: https://bibliotekanauki.pl/articles/332266.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: Baltic Sea
anthropogenic underwater noise
shipping
Opis:: The presented work aims to evaluate the possible impact of shipping noise on the marine fauna in the vicinity of the Gdynia Harbour. Measurements were performed in the area at the distance of 0.2 NM to the fairway. For this purpose, statistics of Sound Pressure Level (SPL), Sound Exposure Level (SEL), and Power Spectral Density (PSD) were evaluated. Some specific changes of the ambient and shipping noise spectra are given in examples.
Źródło:: Hydroacoustics; 2015, 18; 203-214
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Field Study on Underwater Noise Emitted by Small Tourist Boats. Comparison Between the Use of Electric and Combustion Motors
Autorzy:: Yori, Alfio
Powiązania:: https://bibliotekanauki.pl/articles/31339825.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: small boat underwater noise
anthropogenic underwater noise
electric motor boat
underwater noise produced by tourist boats
Opis:: Small boats, possessing outboard engines, are widely used in tourism and mammal watching within marine protected areas. Noise generated by this type of vessels has the capacity to negatively affect marine fauna, especially marine mammals, which use sound throughout all the phases of their lives. These tourism boats used in mammal watching may use different propulsion systems, such as gas, diesel or electric engines. To characterize underwater noise emitted by this type of vessels becomes relevant not only when assessing the acoustic impact produced by these different propulsion systems over the marine fauna living inside these protected marine areas, but also when determining which one produces the least impact. A comparative study of underwater noise emissions coming from small touristic boats was made in this study. Boats were similar in capacity and functions, although possessing different propulsion systems. Measurements were made on two boats with a 50 Hp internal combustion engine and one 5 Hp electric boat. These boats were selected to be studied because they have practically the same size, possess the same passenger-capacity and are used to make similar jobs and routes inside the protected area where they are operated. The electric boat showed a considerable decrease in underwater noise emissions, especially in low frequencies. This boat will produce a lower accumulated exposition of the fauna to the noise or will allow a closer approach to the observed species. Measurements were made between September 2018 and January 2020
Źródło:: Archives of Acoustics; 2023, 48, 3; 347-358
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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