Underwater acoustic characterisation of unexploded ordnance disposal using deflagration

MARINE POLLUTION BULLETIN

卷:160

Article

Robinson, Stephen P.¹  Wang, Lian¹  Cheong, Sei-Him¹  Lepper, Paul A.²  Marubini, Francesca³  Hartley, John P.³ 

[1] Natl Phys Lab, Hampton Rd, Teddington TW11 0LW, Middx, England

[2] Loughborough Univ, Loughborough LE11 3TU, Leics, England

[3] Hartley Anderson Ltd, Aberdeen AB11 5BE, Scotland

关键词: UXO;    Acoustic;    Noise;    Pollution;    Deflagration;   

DOI  :  10.1016/j.marpolbul.2020.111646

来源: Elsevier

【 摘 要 】

The seabed off North West Europe contains much unexploded ordnance (UXO), posing a hazard to offshore developments such as windfarms. The typical removal method is through high-order detonation of a donor charge placed adjacent to the UXO. This method poses a risk of injury or death to marine mammals and other fauna from the high sound levels produced. This paper describes a controlled field experiment to compare the sound produced by high-order detonations with a low-order disposal method called deflagration, which uses a shaped charge of modest size, is less energetic, and offers reduced environmental impact from lower acoustic output. The results demonstrate a substantial reduction over high order detonation, with the peak sound pressure level and sound exposure level being more than 20 dB lower for the deflagration, and with the acoustic output depending only on the size of the shaped charge (rather than the size of the UXO).

【 授权许可】

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