2025_programme: Comparing sound pressure kurtosis for marine airgun and impact pile driving
- Day: June 16, Monday
Location / Time: D. CHLOE at 18:00-18:20
- Last minutes changes: -
- Session: 13. Pile driving noise -Radiated noise from offshore wind construction
Organiser(s): Jonas von Pein, Vincent E. Premus
Chairperson(s): Jonas von Pein, Vincent E. Premus
- Lecture: Comparing sound pressure kurtosis for marine airgun and impact pile driving [Invited]
Paper ID: 2148
Author(s): Yaxi Peng, Ozkan Sertlek, Apostolos Tsouvalas
Presenter: Yaxi Peng
Abstract: Marine airguns and impact pile driving are both intense, impulsive sources of underwater noise. As the sound is generated either in the seawater or partially embedded into the seafloor, sound pressure characteristics change as the wave propagates away from the source due to interactions with the seabed and sea surface. Understanding the properties of sound pressure waveforms is crucial for selecting metrics that accurately assess the effects of underwater noise on marine life, particularly in relation to established noise thresholds. After validating our propagation modelling approach with selected cases from the JAM Workshop held in Cambridge in 2022 mainly focusing on marine airgun signals, this study extends the approach to examine the sound pressure kurtosis from impact pile driving in offshore wind turbine foundation installation. For impact pile driving, dual exposure metrics such as cumulative sound exposure level (SEL) and peak sound pressure level (Lp,pk) are commonly applied. However, understanding the noise impact on marine species—including fish, invertebrates, crustaceans, and marine mammals—requires more than just exposure levels; it also depends on frequency, duration, and spatial-temporal patterns of sound pressure. Given the impulsive and intense nature of both seismic airgun noise and impact pile driving, this study investigates variations in sound pressure kurtosis, which is a key metric quantifying the "impulsiveness" of a sound across different sediment types to compare these two noise sources.
- Corresponding author: Ms Yaxi Peng
Affiliation: Delft University of Technology
Country: Netherlands
