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

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A BEAUFCRT SEA B CHW(CH SEA CHOPEBAW D MATON BASN E. ST MATTHEW HALL E NAWW BA!3N G ALEUTIAN BASYJ H BOWERS BA!3N I ALEUTIAN ARC J ST GEORGE BA!jiN K MYITH ALEUTIAN BASIN O.UILF(YALAsKA
Report No. 6945 BBN Systems and Technologies Corporation Pinnipeds Steller Sea Lion (Eumetopias jubatus). Steller sea lions breed along Alaska's coast from southeast Alaska, through the Gulf of Alaska, along the Alaska Peninsula and throughout the Aleutian and Pribilof Islands. This species thrives in remote rocky island regions. Sea lion rookery and haul-out sites are typically rocky headlands or islands (Fig. 2.14). Male sea lions arrive at rookeries in early May and have established territories by the time pregnant females arrive. Bulls guard harems of about 14-17 females; pupping occurs from mid May through mid July. Mating occurs within two weeks of pupping, and most breeding is finished by mid July or early August. Molting follows mating and is usually completed by October. Pups usually enter the water at around one month of age but females continue to nurse their pups for up to one year. Males and pupless females start to leave the rookeries in July; females with young remain at or near the rookeries. Although the Pribilofs represent their most northerly breeding areas in the Bering Sea, male and subadult sea lions disperse during the summer and forage and haul-out as far north as Fairway Rock and the Diomede Islands in Bering Strait on an irregular basis. Northerly sites where sea lions regularly haul-out include Cape Newenham, Nunivak island, and St. Matthew and Hall Islands. Besides utilizing coastal areas, Steller sea lions forage at sea, mostly over the continental shelf in waters
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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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FIG. 3.14 REPRESENTATIVE SHIPS AND
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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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FIG. 4.1 1 AIR TO SHALLOW WATER SOU
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FIG. D. 3 ESTIMATED HEARING CHARACT
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