Evaluation of the impact of the uncertainties on environmental data for far-field propagation in shallow water with Split-Step Padé PE
Regular paper
University of Liège
Monday 1 june, 2015, 18:00 - 18:20
0.2 Berlin (90)
Abstract:
In offshore wind farms, the installation of a wind turbine is commonly
done by driving a pile into the seabed, generating high energetic
impulsive noise with possible negative impact on the marine fauna. The
assessment of the environmental impact of pile driving has becomed an
important challenge. In conjunction with numerical models of the sound
source (pile driven by hammer), numerical underwater sound propagation
models can be used to predict the sound pressure levels evolution over
the distance from the pile. However, those models depend on
environmental input data which are marred by uncertainties that can
affect the simulation results. In this paper, the impact of those
uncertainties on far-field propagation transmission losses is studied
using an elastic parabolic equation (RAMS) on a test case in the English
Channel. The sensitivity of the model is given for the estimated maximum
boundaries on the data uncertainties.