scholarly journals Wind creates a natural bubble curtain mitigating porpoise avoidance during offshore pile driving

2016 ◽  
Author(s):  
Anne-Cécile Dragon ◽  
Miriam J. Brandt ◽  
Ansgar Diederichs ◽  
Georg Nehls
Keyword(s):  
Pile Driving ◽  
Bubble Curtain

scholarly journals Study of the Sound Escape with the Use of an Air Bubble Curtain in Offshore Pile Driving

2021 ◽  
Vol 9 (2) ◽  
pp. 232
Author(s):  
Yaxi Peng ◽  
Apostolos Tsouvalas ◽  
Tasos Stampoultzoglou ◽  
Andrei Metrikine
Keyword(s):  
Noise Reduction ◽  
Wave Field ◽  
Ecological Impact ◽  
Free Field ◽  
Pile Driving ◽  
Noise Prediction ◽  
Underwater Noise ◽  
Air Bubble ◽  
Noise Transmission ◽  
Bubble Curtain

Underwater noise pollution generated by offshore pile driving has raised serious concerns over the ecological impact on marine life. To comply with the strict governmental regulations on the threshold levels of underwater noise, bubble curtains are usually applied in practice. This paper examines the effectiveness of an air bubble curtain system in noise reduction for offshore pile driving. The focus is placed on the evaluation of noise transmission paths, which are essential for the effective blockage of sound propagation. A coupled two-step approach for the prediction of underwater noise is adopted, which allows us to treat the waterborne and soilborne noise transmission paths separately. The complete model consists of two modules: a noise prediction module for offshore pile driving aiming at the generation and propagation of the wave field and a noise reduction module for predicting the transmission loss in passing through an air bubble curtain. With the proposed model, underwater noise prognosis is examined in the following cases: (i) free-field noise prediction without the air bubble curtain, (ii) waterborne path fully blocked at the position of the air bubble curtain while the rest of the wave field is propagated at the target distance, (iii) similarly to (ii) but with a non-fully blocked waterborne path close to the seabed, and (iv) air bubble curtain modeled explicitly using an effective medium theory. The results provide a clear indication of the amount of energy that can be channeled through the seabed and through possible gaps in the water column adjacent to the seabed. The model allows for a large number of simulations and for a thorough parametric study of the noise escape when a bubble curtain is applied offshore.

Attenuating underwater pile driving noise at a remote receiving location using an encapsulated bubble curtain

2012 ◽  
Vol 131 (4) ◽  
pp. 3356-3356 ◽  
Author(s):  
Mark S. Wochner ◽  
Kevin M. Lee ◽  
Preston S. Wilson
Keyword(s):  
Pile Driving ◽  
Bubble Curtain

Bubble curtain effectiveness during impact pile driving for monopile installation at the Coastal Virginia Offshore Wind project

2020 ◽  
Vol 148 (4) ◽  
pp. 2627-2628
Author(s):  
Jennifer L. Amaral ◽  
Adam S. Frankel ◽  
James H. Miller ◽  
Gopu Potty ◽  
Ying T. Lin ◽  
...  
Keyword(s):  
Offshore Wind ◽  
Pile Driving ◽  
Bubble Curtain

Effect of Pile-Driving Playback Sound Level on Fish-Catching Efficiency in Harbor Porpoises (Phocoena phocoena)

2019 ◽  
Vol 45 (4) ◽  
pp. 398-410 ◽  
Author(s):  
Ronald A. Kastelein ◽  
Léonie A. E. Huijser ◽  
Suzanne Cornelisse ◽  
Lean Helder-Hoek ◽  
Nancy Jennings ◽  
...  
Keyword(s):  
Sound Level ◽  
Pile Driving ◽  
Phocoena Phocoena ◽  
Harbor Porpoises

Reduced Detection of Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) in an Inner Harbour Channel During Pile Driving Activities

2015 ◽  
Vol 41 (4) ◽  
pp. 455-468 ◽  
Author(s):  
Estênio G. Paiva ◽  
Chandra P. Salgado Kent ◽  
Marthe Monique Gagnon ◽  
Robert McCauley ◽  
Hugh Finn
Keyword(s):  
Bottlenose Dolphins ◽  
Pile Driving ◽  
Tursiops Aduncus
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