Analysis and Ranking of the Acoustic Disturbance Potential of ...

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FIG. 5.7 DRILLSHIP (EXPLORER II) OPERATING IN THE CHUKCHI SEA Summer, 50Z Ice Cover 1/3 Octave Center Frequency, Hz U 3 1
Report No. 6945 BBN Systems and Technologies Corporation - Table 5.12 Zone of Influwe Estirtes for klrted OCS Pluning Areas Species - Gray Wale Zone - Range (km)/Effective area (k~n-2) Criteria based on 50% Prob. Avoidance Plming Prop. Source Speed (1) (2) (3) (4) Area Cod. Type h r Lr=12O Lra=120 S/N=30 Lr=158 -.------.--.-*----------..--------------.------.--.---..----*.-..-*-..-- Chukchi S Icebreaker - M2OO 6/115 10/315 N Y 5.4/92 4 3 58 11.7/430 S Seismic Array 9.3 8.5/540 3.2/150 S Drillship - 1.5/7.1 1.5/7.1 2/12.6 S Twin Outdrive (5) 37 0.45/67 0.6/90 ---..------.--------*---------.------------.-------.--....-...-..-.....-- ort ton N Icebreaker 12/C50 9/250 10.5/350 S Seismic Array 9.3 2.5/110 2.0/87 S Drillship - 1.1/3.8 1.1/38 0.9/2.5 S Twin Outdrive (5) 37 0.5/75 0.4/60 ----.---------..-----------------------.----..-..---.------.-...------ North N Icebreaker - 40/5030 30/2830 35/3850 Aleutian S Seismic Array 9.3 3.0/140 1.3/54 S Drillship 1-8/10 1.8/10.2 1.8/10 S Twin Outdriw (5) 37 0.8/118 0.3/45 ----.----.-.-...-.--..---.--..--.---.--.--~----.~.~~~~.~~.~ Shuaagin S LargeTrnker(5) 30 27/5530 6/545 N Y 30 1U3180' 6/545 Notes: (1) Lr = Max. Source Level (Loll - TL at range Rz (2) Lr8 = Leq - TL at rmge Rz + TLref (3) S/N = Si-1 in hi*est l/3 octave band at range Rz - Smile hient noise level (4) Ls = 158, Criterion for air gm spectrun (5) Zarr of influwe aromd rwing vessels u y be larger than suggested here if uhales are more scnritiw to noise fra wving (tn prrticular, .pproaching) vessels than from stationary sourer (cf. M i l n at al. 1967, Sect. 2.4).
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BBN Svstems and Technologies Cor~or
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Report No. 6945 BBN Systems and Tec
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H BOWERS BAW I ALEUTIAN ARC 3 STGEC
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A BEAUFORT SEA B U WCH SEA CHOPEaAS
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Report No. 6945 L 1 A. Baird's Beak
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A BEAUFCRT SEA B CHW(CH SEA CHOPEBA
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A BEAUFCRT SEA BWKQIYA DrnTONBAsw E
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A BEAUFORT SEA BCHlKCHSEA CHaeEansr
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on the ice. The single calves remai
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A 0EAUFaAT SEA BCHJKCH 9 A CHaPE BA
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BCmrcCHSEA CHOPEBnsw 0 NORTON 0Am E
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.. A BEWORT SEA B WKCH SEA CH)PEBAS
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l fjG 1 ll.1 16:' 1 GI) 158 15.1 1
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Table 2.8. Characteristics of Under
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FIG. 3.2 NOISE SPECTRA IN SHALLOW W
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Adapted From K.H. Jacob (1986) Cali
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FIG. 3.8 ESTIMATED OVERALL SOUND LE
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FIG. 3. Q UNDERWATER NOISE SPECTRA
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FIG- 3.1 1 STATISTICAL ANALYSIS OF
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FIG- 3-12 STATISTICAL ANALYSIS OF C
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-- Alr Gun Array + Vlbrosels -* Ice
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FIG. 3.14 REPRESENTATIVE SHIPS AND
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~ -- -- FIG. 3.1 7 REPRESENTATIVE R
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FIG. 3-18 REPRESENTATIVE CULTURAL S
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FIG. 4.1 CORRECTION TO 300 M REFERE
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A. 6. ~la~onca 011shwe. mm I C. MSI
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Report No. 6945 FIG. C. 1 A BBN Sys
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FIG. D. 1 HUMAN VOCALIZATION AND AU
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FIG. D. 3 ESTIMATED HEARING CHARACT
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