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July 23, 2026Marine Pollution BulletinOpen Access

Underwater noise modeling of Arctic shipping scenarios in Eclipse Sound, Nunavut: Assessing acoustic conditions in narwhal habitat

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Authors

KJKatrina H. JohnsonVZVanessa M. ZoBellKWKristin H. Westdal

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Overview

Randomized trial assesses underwater noise impact from Arctic shipping in narwhal habitat, suggesting mitigation methods.

Key Points

  • This research aims to model underwater noise generated by shipping in Eclipse Sound, focusing on its impact on narwhal habitat.
  • Combined passive acoustic measurements from Eclipse Sound in 2023 with propagation modeling.
  • Derived monopole source levels from 289 unique ship transits and validated noise model predictions.
  • Generated spatiotemporal underwater noise models for six transit scenarios.
  • Cargo vessels had a mean monopole source level of 157.8 dB re 1 μPa·m, while tankers reached 170.1 dB re 1 μPa·m.
  • Validated noise models had an error of less than ±3 dB.
  • Frequency-dependent noise impacts showed excess levels of 10-20 dB at 63 Hz compared to 2-10 dB at 1,000 Hz.

Cite This Study

Johnson et al. (2026) studied this question.

synapsesocial.com/papers/6a61aea0faa9903c51169ca0https://doi.org/10.1016/j.marpolbul.2026.120142
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