Skip to main content

Simulation result of the effects of radiation noise from long-distance ships on marine mammals

Buy Article:

$15.00 + tax (Refund Policy)

In recent, there is a worldwide concern that underwater noise from human activities may have impacted marine life. The international community recognizes the underwater radiated noise from navigational ships may have consequences on marine life. However, there is no scientific evidence for these, so they need to be investigated. MLIT launched the project with the aim of understanding the current status of underwater noise by navigational ships. In this project, a hydrophone has been installed in the sea off Ohshima Island since 2020 to measure the noise by navigational ships around the hydrophone. The purpose of this study , first is to calculate the source level of ship radiation noise using the normal mode method with the ship noise data obtained from hydrophone measurements. Second is to simulate the propagation of the source level using Parabolic Equation (PE) with the marine environment of the propagation path as a parameter. Finally, based on the results of propagation simulations, we examine the impact of ship noise on whales. As a result, revealed the noise levels emitted from RORO vessels, and by simulating the propagation of the noise levels, it was possible to confirm the distances that affect the whale's hearing.

The requested document is freely available to subscribers. Users without a subscription can purchase this article.

Sign in

Document Type: Research Article

Affiliations: 1: Course of Applied Marine Environmental Studies, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology 2: Graduate School of Tokyo University of Marine Science and Technology 3: Graduated School of Osaka University

Publication date: 30 November 2023

More about this publication?
  • The Noise-Con conference proceedings are sponsored by INCE/USA and the Inter-Noise proceedings by I-INCE. NOVEM (Noise and Vibration Emerging Methods) conference proceedings are included. All NoiseCon Proceedings one year or older are free to download. InterNoise proceedings from outside the USA older than 10 years are free to download. Others are free to INCE/USA members and member societies of I-INCE.

  • Membership Information
  • INCE Subject Classification
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content