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

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Report No. 6945<br />

BBN Systems <strong>and</strong> Technology corporation<br />

FIG. E.23 TRAWLER (IOKT) OPERATING IN THE NORTH ALEUTIAN BASIN<br />

Surface Layer Conditions<br />

L 20 40 80 160 315 630 1250 2500 5000 10000<br />

1/3 Octave B<strong>and</strong> Center Frequency, Hz<br />

FIG. E.24 LARGE TANKER TRANSITING SHUMAGIN AREA<br />

Neutral Gradient Conditions<br />

L 20 40 80 160 315 630 1250 2500 5000 10000<br />

1/3 Octave B<strong>and</strong> Center Frequency, Hz

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