The Scientific World Journal / 2013 / Article / Tab 4

Research Article

Differentiating between Underwater Construction Noise of Monopile and Jacket Foundations for Offshore Windmills: A Case Study from the Belgian Part of the North Sea

Table 4

Characterization of the monopile and jacket piling activities. Normalized maximum sound exposure level (norm. max. SEL @ 750 m).

Foundation typeMonopile (3 MW)Jacket (6 MW)

Average no. of blow/foundation30109476
Average no. of blow/MW installed10211612
Average energy (MJ)/blow 0.70.4
Average energy (MJ)/foundation21233909
Average energy (MJ)/MW installed 721665
Norm. max. SEL @750 m (dB re 1 μPa²s)166178
Average duration of piling (min)/foundation 120319
Average duration of piling (min)/MW installed 4155
Average piling frequency (blow/min)2530