Numerical simulation of pile-driving induced-noise propagation into the ocean: effects of sedimentary basins and interaction of two distant pile driving operations - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

Numerical simulation of pile-driving induced-noise propagation into the ocean: effects of sedimentary basins and interaction of two distant pile driving operations

Résumé

Pile driving is a major source of the noise generated by human activities in the ocean. The complex wavefield which is generated by this activity depends not only on the water column characteristics but also on the structure of the sediment layers beneath. In general, this structure is considered horizontally stratified with a gradient of mechanical properties. In this presentation, we propose to investigate a sediment configuration with a heterogeneous structure including two sedimentary basins. For this purpose, we performed several numerical simulations using a 2D time-domain spectral element method which allows for accurate handling of the characteristics of the complex marine environment (complex bathymetry and elastic sediments). We emphasize the presence of interface waves of the Stoneley-Scholte type. Additionally, we propose a method to generate 3D interaction maps of two distant pile driving operations using only one 2D simulation. Our results show the importance of taking into account the phase of the signals to correctly evaluate the interferences between the two operations.
Fichier principal
Vignette du fichier
ICA_2022_template_extended_ABS-0591.pdf (3.26 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Licence : CC BY NC ND - Paternité - Pas d'utilisation commerciale - Pas de modification

Dates et versions

hal-04174346 , version 1 (31-07-2023)

Identifiants

  • HAL Id : hal-04174346 , version 1

Citer

Paul Cristini, Louise Pacaut, Nathalie Favretto-Cristini. Numerical simulation of pile-driving induced-noise propagation into the ocean: effects of sedimentary basins and interaction of two distant pile driving operations. 24th International Congress on Acoustics, Oct 2022, Gyeongju, South Korea. ⟨hal-04174346⟩
11 Consultations
16 Téléchargements

Partager

Gmail Facebook X LinkedIn More