Regional 2022 Ocean Noise Contributors in Southern Resident Killer Whale Habitat
- Langue de publication
- Anglais
- Date
- 2024-11-12
- Type
- Rapport
- Auteur(s)
- MacGillivray, Alexander O.
- Stothart, Forest M.C.
- Li, Zizheng
- Grooms, Connor H.
- Zykov, Mikhail M.
Titre alternatif
Contributeurs régionaux au bruit océanique de 2022 dans l'habitat des épaulards résidents du sud
Résumé
This study uses an advanced soundscape model to investigate how different marine sectors contributed to underwater noise in Southern Resident killer whale (SRKW) habitat during 2022. Key outputs of the model are maps of sound pressure level (SPL) generated by various vessel types and wind-driven ambient noise for the Salish Sea and Swiftsure Bank. Key inputs to the model include ship tracking data from the Automatic Identification System (AIS) and an extensive database of high-quality measurements of vessel underwater radiated noise. Soundscape maps are broken down into 15 vessel categories and 9 geographic sub-regions to calculate the contributions of different marine transportation sectors to the underwater sound energy budget. The soundscape model is also used to calculate natural ambient noise originating from wind and rain. The difference between ship-generated SPL and natural ambient SPL is used to assess how shipping activity contributes to acoustic masking within sensitive habitat areas.
Description
This study uses an advanced soundscape model to investigate how different marine sectors contributed to underwater noise in Southern Resident killer whale (SRKW) habitat during 2022.
Sujet
- Transport
Mots-clés
- Underwater radiated noise,
- URN,
- marine animal,
- Southern Resident killer whale,
- modelling,
- ambient noise,
- masking,
- endangered species
Pagination
xii, 65, ann.
Évalué par les pairs
Internal Review
Identifiants
- ISBN
- T89-23/2024E-PDF978-0-660-73960-1
Référence(s)
MacGillivray, A.O., F.M.C. Stothart, Z. Li, C.H. Grooms, and M.M. Zykov. 2024. Regional 2022 Ocean Noise Contributors in Southern Resident Killer Whale Habitat: Update to the ECHO Study on Regional 2015 Ocean Noise Contributors.Document 03382, Version 2.2. Technical report by JASCO Applied Sciences for Innovation Centre of Transport Canada