Effects of noise of offshore Effects of noise of offshore oil and gas operations on marine mammals : an introductory assessment effectsofnoiseof00gale Year: 1982 100 âX - - r- - â â - â - _ -- - ^-_ 5 .) â â - â \ , ^J^CO^ < ^^ ^^^ooc^e^-f^ 1 ^' ^ '-^EP^^^ fev^ ^^J^ ^1«< ^-N V \ CR- Seo j ' â â -' .1^ 5 1 \ '^ - â LLU - â - 1 1 ,,,! 1 J , , J 5 10 JO 50 100 roo 100 Platform C Water Depth: 180 ft. HydroDhone Depth: 100 ft. Distance: Average 50,200,200 ft. Tonal (Spectrum line) â ^ Broad band (cont. spect.) Narrow band component from chain clanking of
Effects of noise of offshore Effects of noise of offshore oil and gas operations on marine mammals : an introductory assessment effectsofnoiseof00gale Year: 1982 100 âX - - r- - â â - â - _ -- - ^-_ 5 .) â â - â \ , ^J^CO^ < ^^ ^^^ooc^e^-f^ 1 ^' ^ '-^EP^^^ fev^ ^^J^ ^1«< ^-N V \ CR- Seo j ' â â -' .1^ 5 1 \ '^ - â LLU - â - 1 1 ,,,! 1 J , , J 5 10 JO 50 100 roo 100 Platform C Water Depth: 180 ft. HydroDhone Depth: 100 ft. Distance: Average 50,200,200 ft. Tonal (Spectrum line) â ^ Broad band (cont. spect.) Narrow band component from chain clanking of mooring buoy. Platform B Water Depth: 180 ft. Hydrophone Depth: 100 ft. Distance: 100 ft. 1 â 1 t - 1 ! â \l P ! ; 1 -h \ Sr Lâ« â â -- > .^ ^ - s:°'. â r^k^^^^^^^^sC^^r^^X^^^^^^^^K-^'r' 1 1 - \^ , -N \ \ 1 ^^ ^ 1 - 1,, , , XLll -Lll 1 , , nil '- 1,1 10 20 50 100 JOO 500 Platform A Water Depth: 180 ft. Hydrophone Depth: 100 ft. Distance: 100 ft. Fig. 6 Spectra of underwater noise of Platform C, Platform B and Platform A superimposed on average deep water ambient noise spectra F-18
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