. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Finfish and the environment 603 I 170° 175' 180° 175° 170° 165° 160° 155°. I Figure 36-7. Schematic diagram of August distribution of halibut, herring, pollock, and yellowfin sole. (Long dashes indicate probable extension of shelf range; short dashes indicate juvenile distribution, where known or different from adults.) Salmon occur throughout the shelf area. water, southwest of Nunivak Island (see Ingraham and Section I of this book). If not an artifact caused b
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Finfish and the environment 603 I 170° 175' 180° 175° 170° 165° 160° 155°. I Figure 36-7. Schematic diagram of August distribution of halibut, herring, pollock, and yellowfin sole. (Long dashes indicate probable extension of shelf range; short dashes indicate juvenile distribution, where known or different from adults.) Salmon occur throughout the shelf area. water, southwest of Nunivak Island (see Ingraham and Section I of this book). If not an artifact caused by the averaging of data, this intrusion could have a pronounced effect on the return seaward of herring and yeUowfin sole, and possibly other stocks. The offshore migrations of herring west of Nunivak Island and northwest of Unimak Island continue, and yellowfin sole begin to disperse from the spawning area off Nunivak Island (Fig. 36-8). Although it is apparent that yellowfin sole subsequently range over a large portion of the shelf, it is believed that the major concentrations remain west of Nunivak Island and it is from this location that the two major stocks begin to migrate seaward to wintering grounds at the outer shelf. When juveniles that will winter in coastal areas separate is not clear. Halibut and pollock distributions are apparently unchanged. And salmon stocks, both adult and juvenile, have largely cleared the shelf area by the end of the month, but stragglers may remain. October Air temperatures markedly decline and values below zero occur over the northern half of the shelf; ice begins to form in the Gulf of Anadyr, the west side of Bering Strait, and east Norton Sound. Ocean- ographic data are too fragmentary to indicate mean conditions over the shelf but some features are apparent. Surface and bottom temperatures of 6-8 C occur along the coast from the Alaska Peninsula to Norton Sound. Mid-shelf surface temperatures of 5-7 C occur and bottom temperature
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