Particle motion observed during offshore wind turbine piling operation
2022
Sigray, Peter | Linné, Markus | Andersson, Mathias H. | Nöjd, Andreas | Persson, Leif K.G. | Gill, Andrew B. | Thomsen, Frank
Measurement of particle motion from an offshore piling event in the North was conducted to determine noise levels. For this purpose, a bespoken sensor was developed that was both autonomous and sensitive up to 2 kHz. The measurement was undertaken both for unmitigated and mitigated piling. Three different types of mitigation techniques were employed. The acceleration zero-to-peak values and the acceleration exposure levels were determined. The results show that inferred mitigation techniques reduce the levels significantly as well as decreases the power content of higher frequencies. These results suggest that mitigation has an effect and will reduce the effect ranges of impact on marine species.
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