The Underwater Noise Emitted by Fishing Boats.

DOI JASI Web Site 8 Citations 15 References

Bibliographic Information

Other Title
  • 漁船の海中への放射雑音
  • ギョセン ノ カイチュウ エ ノ ホウシャ ザツオン

Search this article

Abstract

The underwater noise emitted by fishing boats is one of the main noise sources in coastal fishing grounds. This paper intends to investigate the underwater noise emitted by fishing boats, by means of measuring both drifting and cruising noise for small trawlers and medium purse seiners.<br> The spectrum of noise when drifting showed some harmonics (line component spectrum) of basic frequency which corresponded to the main engine and generator revolution pitch. The noise at cruising showed a powerful continuous component spectrum above 50 Hz frequency zone to the propeller influence as well as line components spectrum. It dominated when applied to full speed ahead and astern. The sound spectrogram of underwater noise emitted by fishing boats when cruising showed furthermore doppler phenominon and interference. These functions at cruising were influenced by distance from noise source, depth, reflection number, main engine and generator revo-lution, and cruising speed.

Journal

Citations (8)*help

See more

References(15)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top