Damping of Shock Waves from Sea Mine Blasts to protect Marine Mammals – Results from Bubble Curtain Trials in Heidkate 2008 - 2010

MIREMAR - Conference

Edgar Schmidtke, WTD71 – Research Department for Underwater Acoustics and Marine Geophysics, Kiel, Germany

Abstract

Air bubbles in water are known to damp underwater sound. This is a well known and well understood effect. It has been shown by other authors in recent years that is also possible to damp large pressure amplitudes emitted by piling.

So it seems possible to use this damping effect to reduce sound emissions generated by underwater explosions. Experiments were presented that were carried out in the last three years. The results show that reasonable damping can be achieved.

Contact
Edgar Schmidtke
Research Department for Underwater Acoustics and Marine Geophysics WTD71
Berliner Straße 115
24340 Eckernförde
Tel.: +49 4351 467-0

Files

• Presentation Edgar Schmidtke, WTD71 – Research Department for Underwater Acoustics and Marine Geophysics, Kiel, Germany
• Scientific Paper (in german; english summary to follow shortly)