File:Edited by Donald W. Hood and John A. Calder" (1981).jpg

English: Title: The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder

Identifier: easternberings00hood Year: 1981 (1980s) Authors: Hood, D. W. (Donald Wilbur), 1918-; Calder, John A; United States. Office of Marine Pollution Assessment; United States. Bureau of Land Management Subjects: Oceanography Bering Sea. Publisher: [Rockville, Md. ?] : U. S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Marine Pollution Assessment ; Seattle, Wash. : Distributed by the University of Washington Press Contributing Library: Penn State University Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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Text Appearing After Image: ,1-^ / ^ â X^^ 'â V â ^ \ Figure 11-9. LANDSAT image obtained 25 February 1976 showing the entrance to Norton Sound. It is difficult to ascribe any particular cause to this behavior. A rather abrupt bathymetric transition from 6 to 16 m crosses this zone. The more closely coincident part of the average ice edge agrees well with this break, whereas farther south the ice edges oscillate across the break. The coincident part lies along the edge of mud flats which mark the prodelta of a former mouth of the Yukon River; the oscillating part lies across the mouth of Hazen Bay. Possibly the edge of fast ice to the north is deter- mined by ice bottom-fast to the mud flats, and to the south the irregularity is caused by tidal currents into and from Hazen Bay. The depth of the bay is be- tween 4 and 5 m and the tidal range, which is as great as 3.5 m diurnally at Cape Romanzof, is sufficient to cause high-velocity tides into and out of the bay. South of Nelson Island, around to Cape Avinof, the seasonal edges of fast ice coincide again. These boundaries appear to coincide with the 8-m isobath. Offshore from here, as far south as the southern side of Nunivak Island, there are several shoals 4-6 m deep as far as 30 km from the coast. Ice passing from north to south through Etolin Strait between the mainland and Nunivak Island often piles on these

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