Underwater noise from offshore oil production vessels
Christine Erbe1, Robert McCauley, Craig McPherson
1Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia. C.Erbe@curtin.edu.au
Abstract:
Underwater acoustic recordings of six Floating Production Storage and Offloading (FPSO) vessels moored off Western Australia are presented. Monopole source spectra were computed for use in environmental impact assessments of underwater noise. Given that operations on the FPSOs varied over the period of recording, and were sometimes unknown, the authors present a statistical approach to noise level estimation. No significant or consistent aspect dependence was found for the six FPSOs. Noise levels did not scale with FPSO size or power. The 5th, 50th (median), and 95th percentile source levels (broadband, 20 to 2500 Hz) were 188, 181, and 173 dB re 1 μPa @ 1 m, respectively.
Related Concept Videos
Marine Microbial Ecology
Sound Waves: Interference
Primary Production
Deep Sea Microbial Ecology
Heart Sounds
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Effect of Sea Water on Concrete
Concrete in areas between tide marks, which undergo...

