Geo-Spatial Tool for the Assessment Offshore Pile Driving Noise Effects on Marine Mammals

Abdelazim Mohamed Negm, Waled Daoud, Kiyonobu Kiyonobu, Nasser Saleh, Mahmoud Bady

Abstract


Most of offshore structures are found on large diameter driven-piles that produce high amount of underwater noise that can propagate up to a distance of 200 km. This underwater noise has detrimental effects on the marine mammals and at very high levels can injure or even kill the mammal. The propagation of underwater noise produced during pile driving is an important issue especially for newly constructed offshore structures. Geospatial tool to assess underwater noise propagation due to pile diving is proposed. The tool will serve to assess both Sound Exposure Level and Sound Pressure Level at any location. Pile Driven in the red sea near Jeddah Islamic Port was considered as a test case.  The tool successfully predicted the underwater noise propagation at different locations. The accuracy of the tool depends mainly on the used prediction model, Roger’s Model. Future updates will consider multiple piles driven at the same time and allow the user to use any other propagation model.

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